Critical Care Bulletin - May 2025

 

Endotoxin hemoadsorption in refractory septic shock with multiorgan dysfunction and extreme endotoxin activity

Critical Care volume 29, Article number: 206 Published: 20 May 2025

Abstract

Endotoxin septic shock is marked by severe organ failure and mortality rate that exceeds fifty percent, underscoring the critical need to tailor management strategies. Monitoring -endotoxin activity can guide the initiation and direction of adjunctive treatment for refractory septic shock through hemoadsorption. Thus, intervening based on the pathophysiological foundation may potentially improve outcomes. This represents a step towards precision medicine in the management of septic shock adjunctive therapies, addressing a knowledge gap in this pathology that remains insufficiently defined. Despite its potential, in the setting of refractory septic shock and multiorgan dysfunction with extreme endotoxin activity (EAA ≥ 0.9), the data about efficacy of endotoxin hemoadsorption is scarce.

 

Circular material flow of medication in the intensive care unit

Critical Care volume 29, Article number: 205 Published: 20 May 2025

Abstract

Background

Intensive care units (ICUs) contribute significantly to healthcare's environmental footprint, with medications playing a major role. This study performed a comprehensive Material Flow Analysis (MFA) of medications in a large academic ICU to quantify material flows and identify opportunities for sustainability.

Methods

A single-center MFA was conducted at a 50-bed ICU, analyzing all medications delivered in 2023. Medication and packaging components were weighed and categorized by active pharmaceutical ingredients (APIs), excipients, and packaging type. Total annual mass as well as daily medication and packaging waste per patient were calculated.

Results

The annual medication inflow totaled 234,337 kg, including 194,411 kg of medication content (5287 kg APIs, 189,124 kg excipients) and 39,923 kg of packaging. APIs constituted only 2.3% of the total medication mass. On average, patients received 89.5 medication units daily, totaling 5.0 kg of medication and generating 1.7 kg of packaging waste. Waste outflow comprised 194,413 kg to the sewage system, 21,894 kg for incineration, and 18,030 kg recycled, consisting primarily of continuous renal replacement therapy (CRRT) bags.

Conclusions

This MFA highlights significant opportunities to enhance ICU medication sustainability by targeting CRRT-related waste, optimizing fluid formulations to reduce excipient use, and minimizing packaging. These findings support the development of targeted interventions to reduce the environmental footprint of critical care.

 

Severe listeriosis in intensive care units: insights from a retrospective multicentric study

Critical Care volume 29, Article number: 201 Published: 19 May 2025

Background

Listeriosis is a rare but severe foodborne infection, particularly affecting immunocompromised individuals and older adults. Severe cases may lead to neurolisteriosis and sepsis, necessitating intensive care unit (ICU) admission. This study aims to analyze the demographic characteristics, clinical presentation, microbiological findings, treatments, and outcomes of critically ill patients with Listeria infections in the ICU.

Methods

A retrospective multicenter study was conducted across 23 French hospitals over a 10-year period, including ICU patients with culture-confirmed Listeria monocytogenes infections. Data on demographics, comorbidities, ICU admission characteristics, biological and microbiological parameters, treatments, and outcomes were collected. The primary outcome was ICU mortality. A multivariable logistic regression model was used to identify factors associated with mortality in patients with neurological manifestations.

Results

A total of 110 patients were included, with a median age of 68 years; 61% were male, and 71% were immunocompromised. Neurological involvement was present in most cases. Invasive mechanical ventilation was required in 58% of patients, and vasopressor support in 44%. ICU and in-hospital mortality rates were 25% and 32%, respectively. Among patients with neurolisteriosis, each 1-point decrease in Glasgow Coma Scale score at admission was associated with increased mortality (OR, 1.22; 95% CI 1.05–1.45; p = 0.009), as were higher cerebrospinal fluid (CSF) protein levels (OR, 1.56; 95% CI 1.15–2.41; p = 0.028). Steroid use was not significantly associated with reduced mortality (OR, 0.30; 95% CI 0.07–1.05; p = 0.076).

Conclusion

Listeriosis requiring ICU admission is associated with high morbidity and mortality, particularly in older and immunocompromised patients. The severity of these infections is reflected by the frequent need for organ support. Further research is needed to clarify the potential role of steroids in neurolisteriosis.

 

Identifying a unique signature of sepsis in patients with pre-existing cirrhosis

Critical Care volume 29, Article number: 199 Published: 19 May 2025

Background

The pre-existing diagnosis of cirrhosis is a complicating factor in the progression and prognosis of sepsis; however, the unique epidemiology, sepsis characteristics, and underlying mechanisms of immune dysregulation in sepsis among patients with cirrhosis remain incompletely understood. Our primary objective was to identify clinical outcomes and biological characteristics that differ between patients with and without cirrhosis among critically ill patients with sepsis.

Methods

We analyzed data from a prospective cohort of critically ill patients presenting to single center with sepsis. Subjects were followed for 6 days for the development of acute respiratory distress syndrome (ARDS) and acute kidney injury (AKI), and 30 days for mortality. Inflammatory, endothelial, and coagulopathic proteins were measured in plasma collected at ICU admission in a subset of patients. We determined associations of cirrhosis with outcomes using multivariable logistic regression adjusting for pre-specified confounders. We tested differences in plasma protein levels by cirrhosis diagnosis using the Wilcoxon Rank-sum test.

Results

We enrolled 2962 subjects, 371 (13%) of whom had a pre-existing diagnosis of cirrhosis. Patients with cirrhosis had higher severity of illness scores, were more likely to have an abdominal source of sepsis, and had more significant clinically measured coagulation abnormalities relative to patients without cirrhosis. In multivariate analysis, cirrhosis was associated with higher AKI risk (adjusted OR 1.65; 95% CI 1.21 to 2.26; P = 0.002), and 30-day mortality (adjusted OR 1.38; 95% CI 1.05 to 1.82; P = 0.022). There was no significant difference in risk for ARDS (adjusted OR 1.02; 95% CI 0.69 to 1.50; P = 0.92). Cirrhosis was associated with higher plasma levels of angiopoietin-2 (P < 0.001), von Willebrand factor (P < 0.001), and soluble thrombomodulin (P < 0.001), as well as lower levels of interleukin (IL)-10 (P < 0.001), IL-1β (P = 0.008), and IL-1RA (P = 0.036). There were no significant differences in levels of IL-6 (P = 0.30).

Conclusions

We identified associations between pre-existing cirrhosis and endothelial injury, AKI, and mortality in sepsis. Patients with pre-existing cirrhosis who develop sepsis may display a unique phenotype of endothelial dysfunction that requires unique targeted approaches.

 

Understanding and mitigating medication errors associated with patient harm in adult intensive care units: a scoping review

Intensive Care Medicine: Published 20 May 2025

Purpose

Medication interventions are fundamental to the care of the critically ill patient in the intensive care unit (ICU), relying on effective and appropriate delivery of the medication use process. Medication errors affect a high proportion of patients in the ICU. This scoping review maps the literature pertaining to medication errors and preventable adverse drug events in the adult ICU.

Methods

We searched seven electronic databases (PubMed, MEDLINE, EMBASE, CINAHL, Web of Science, Cochrane, Google Scholar), identifying 2960 records. After screening against predefined eligibility criteria, 48 records were included for data extraction.

Results

A high variation in incidence of medication errors and preventable adverse drug events were reported, reflecting the heterogeneity in study designs, surveillance methods and preventability assessments. Associated risks factors include patient (high severity of illness, older age), clinical (renal dysfunction, prolonged ICU stay), staff (staff inexperience, role overload), environmental (interruptions, transfer of care) in addition to high-risk medications. The rate of serious or life-threatening harm was low at 1–5% of all medication errors. Half (n = 11, 55%) of the interventions or mitigation practices were focused on the medication prescription phase.

Conclusion

Most medication errors in ICU are identified and intercepted by systems and staff. A minority lead to preventable patient harm and increased length of stay. Decision support embedded in e-prescribing systems, medication reconciliation and review processes and clinical pharmacist activities reduce medication errors and patient harm.

 

 

Individualized mean arterial pressure targets in critically ill patients guided by non-invasive cerebral-autoregulation: a scoping review

Critical Care volume 29, Article number: 196 Published: 16 May 2025

Background

Current guidelines recommend a uniform mean arterial pressure (MAP) target for resuscitating critically ill patients; for example, 65 mmHg for patients with sepsis and post-cardiac arrest. However, since cerebral autoregulation capacity likely varies widely in patients, uniform target may be insufficient in maintaining cerebral perfusion. Personalized MAP targets, based on a non-invasive determination of cerebral autoregulation, may optimize perfusion and reduce complications.

Objectives

This scoping review summarizes the numerical values, feasibility, and clinical data on personalized MAP targets in critically ill patients. The focus is on non-invasive monitoring, such as near-infrared spectroscopy and transcranial doppler ultrasound, due to their safety, practicality and applicability to patients with- and without brain injury.

Methods

Following PRISMA-ScR guidelines, a systematic search of Ovid MedLine, Embase (Ovid), and the Cochrane Library (Wiley) was conducted on September 28, 2023. Two independent reviewers screened titles, abstracts, and full texts for eligibility and manually reviewed references.

Results

Of 7,738 studies were identified, 49 met the inclusion criteria. Of these, 45 (92%) were observational and 4 (8%) were interventional. Patient populations included cardiac surgery (26, 53%), non-cardiac major surgery (4, 8%), cardiac arrest (8, 16%), brain injury (7, 14%), respiratory failure and shock (3, 6%), and sepsis (3, 6%). Optimal MAP was reported in 24 (49%), lower limit of autoregulation in 23 (47%), and upper limit of autoregulation in 10 studies (20%). Thirty-four studies reported partial data loss due to software failures, anomalous data, insufficient natural MAP fluctuation, and workflow barriers. Available randomized controlled trials (RCT) identified challenges with maintaining patients within their target range. Studies explored the associations between personalized MAP targets and a wide range of neurological and non-neurological outcomes, with the most significant and consistent associations identified for acute kidney injury and major morbidity and mortality. Ten studies investigated demographic predictors identifying only few predictors of personalized targets.

Conclusion

Preliminary investigations suggest considerable variability in personalized MAP targets, which may explain differences in clinical outcomes among critically ill populations. Key gaps remain, including a lack of observational studies in critically ill subpopulations other than cardiac surgery and well-designed RCTs. Resolving identified feasibility barriers might be crucial to successfully carrying out future studies.

 

Optimum electrical impedance tomography-based PEEP and recruitment-to-inflation ratio in patients with severe ARDS on venovenous ECMO

Critical Care volume 29, Article number: 195 Published: 16 May 2025

Rationale

The significance of the Recruitment to Inflation (R/I) ratio in identifying PEEP recruiters in patients undergoing ultra-protective lung ventilation during venovenous ECMO is not well established.

Objectives

To compare the concordance of the R/I ratio and Electrical Impedance Tomography (EIT) in determining optimum PEEP settings in severe ARDS patients on ECMO and ventilated with very low tidal volumes.

Methods

Initially, a low-flow insufflation was performed to detect and measure the airway opening pressure (AOP). Subsequently, the R/I ratio was calculated from PEEP 15–5 cmH₂O, followed by a decremental PEEP trial (20–6 cmH₂O in 2 cmH₂O steps) monitored by EIT. The optimum EIT-based PEEP was defined as the intersection of the collapse and overdistension curves.

Main results

Among 54 ECMO patients (tidal volume: 4.8 [3.0–6.0] mL/kg), 13 (24%) exhibited an airway opening pressure (AOP) of 11 (8–14) cmH₂O. The cohort’s median R/I ratio was 0.43 (0.28–0.61). A tertile-based analysis of the R/I ratio (≤ 0.34; 0.34–0.54; > 0.54) revealed median optimum EIT-based PEEP of 8 [8–10], 10 [8–14], and 14 [12–16] cmH₂O, respectively. The R/I ratio demonstrated weak inverse correlations with lung overdistension (R² = 0.19) and positive correlations with lung collapse (R² = 0.26) measured by EIT (p < 0.01).

Conclusion

The R/I ratio is feasible during ultra-protective ventilation and provides valuable indications for guiding PEEP titration. Specifically, an R/I ratio > 0.34 may help identify patients likely to benefit from further individualized PEEP optimization using EIT. In contrast, when the R/I ratio is ≤ 0.34, a moderate PEEP level (8–10 cmH₂O) may suffice.

 

High flow nasal therapy versus noninvasive ventilation for AECOPD with acute hypercapnic respiratory failure: a meta-analysis of randomized controlled trials

Annals of Intensive Care volume 15, Article number: 64 Published: 14 May 2025

Background

Guidelines recommend the use of noninvasive ventilation (NIV) and high-flow nasal cannula (HFNC) in patients with chronic obstructive pulmonary disease (COPD) and hypercapnic acute respiratory failure (ARF). It is unclear whether HFNC is noninferior to NIV in terms of the rate of tracheal intubation or mortality. This meta-analysis aimed to compare the efficacy of HFNC and NIV in patients with AECOPD and hypercapnic ARF.

Methods

A systematic search was made of PubMed, Embase, Cochrane Library, and clinicaltrials.gov, without language restrictions. Randomized controlled trials (RCTs) on treatment of hypercapnic AECOPD with HFNC, compared with NIV, were reviewed. Estimated effects of included studies were pooled as risk ratios (RRs), with 95% confidence intervals (CIs).

Results

Four RCTs (enrolling 486 patients) met the inclusion criteria. There was no statistically significant difference in all-cause mortality (RR 0.97, 95% CI 0.56 to 1.68), and intubation rate (RR 1.67, 95% CI 0.99 to 2.83) between the two groups. The treatment switch rate (RR 2.60, 95% CI 1.54 to 4.38) and treatment failure rate (RR 1.64, 95% CI 1.04 to 2.60) were significantly lower in NIV groups.

Conclusions

Compared with NIV, HFNC was not associated with increased mortality and intubation rate. More patients receiving HFNC oxygen therapy experienced treatment failure and switched to NIV, which may mask the fact that HFNC is inferior to NIV in patients with AECOPD and hypercapnic ARF.

 

Frailty and Long-Term Survival in Patients With Critical Illness After Nonhome Discharge: A Retrospective Cohort Study

Critical Care Medicine : April 29, 2025.

Importance: 

Patients with frailty are more frequently discharged to rehabilitation or residential aged care facility (RACF), defined as nonhome discharge, than those without frailty. An increase in nonhome discharge is considered to be one of the collateral “costs” associated with declining hospital mortality. However, it is unclear whether this association applies to patients with frailty, particularly in the long term.

Objectives: 

To determine the impact of frailty on long-term survival in patients who had a nonhome discharge following an ICU admission.

Design: 

A retrospective multicenter cohort study.

Setting and Participants: 

All medical patients (≥ 16 yr old) admitted to Australian and Zealand ICUs, with a documented Clinical Frailty Scale (CFS) and a nonhome discharge from January 1, 2018, to March 31, 2022, were included.

Interventions: 

None.

Measurements and Main Results: 

Primary outcome was survival time up to 4 years. We used Cox proportional hazards regression models with robust sandwich variance estimators to assess the effect of frailty (defined as CFS = 5–8) on survival time after ICU admission between groups. We also analyzed the effect of frailty on long-term survival based on their age and nonhome discharge location. Of the 57,652 patients, 17,383 (30.2%) were frail. Overall 4-year survival was lower in patients with frailty than those without (32.5% vs. 64.3%; p < 0.001). Frailty was associated with shorter survival times (adjusted hazard ratio [aHR], 1.50; 95% CI, 1.43–1.57). Frailty was associated with a greater reduction in survival in patients younger than 65 years old (aHR, 1.73; 95% CI, 1.59–1.88), 65–80 years (aHR, 1.47; 95% CI, 1.38–1.57), or older than 80 years (aHR, 1.35; 95% CI, 1.26–1.45). Frailty was associated with greater reduction in survival in those discharged to rehabilitation (aHR, 1.52; 95% CI, 1.39–1.65) or acute hospitals (aHR, 1.56; 95% CI, 1.48–1.65) than those discharged to RACF (aHR, 0.94; 95% CI, 0.83–1.06).

Conclusions: 

Frailty was independently associated with shorter time to death following a nonhome discharge after an ICU admission.

Relevance: 

There was an independent association between patients with frailty admitted to ICU and had a nonhome discharge with the shorter time to death than those without frailty.

 

 

 

Peri-intubation complications in critically ill obese patients: a secondary analysis of the international INTUBE cohort

Critical Care volume 29, Article number: 192 Published: 13 May 2025

Abstract

Background

Airway management in critically ill obese patients is potentially associated with a higher risk of adverse events due to a constellation of physiological and anatomical challenges. Data from international prospective studies on peri-intubation adverse events in obese critically ill patients are lacking.

Methods

INTUBE (International Observational Study to Understand the Impact and Best Practices of Airway Management In Critically Ill Patients) was an international multicentre prospective cohort study enrolling critically ill adult patients undergoing in-hospital tracheal intubation in 197 sites from 29 countries worldwide from October 1, 2018, to July 31, 2019. This secondary analysis compares airway management practices and outcomes between obese (body mass index–BMI ≥ 30 kg/m²) and non-obese patients (BMI < 30 kg/m²).

Results

A total of 2946 patients met inclusion criteria for this secondary analysis, 639 (21.7%) obese and 2307 (78.3%) non-obese. Severe peri-intubation hypoxemia was more frequently reported in obese compared to non-obese patients (12.1% vs 8.6% respectively, p = 0.01). Variables independently associated with a higher risk of peri-intubation hypoxemia were baseline SpO₂/FiO₂ (OR 0.996, 95% CI 0.994–0.997), 30–45° head-up position (OR 1.53, 95% CI 1.04–2.26) and first-pass intubation failure (OR for first-pass success 0.21, 95% CI 0.15–0.29). Obesity (OR 0.71, 95% CI 0.56–0.91) and 20° head-up position (OR 0.67, 95% CI 0.47–0.95) were independently associated with higher likelihood of first-pass intubation failure. In contrast, intubation by staff physician/consultant (OR 1.70, 95% CI 1.30–2.21) or anesthesiologists (OR 1.98, 95% CI 1.55–2.53) were associated with higher first-pass success.

Conclusions

Compared to non-obese patients, obese critically ill exhibit a higher incidence of peri-intubation severe hypoxemia. In this population, worse baseline oxygenation and first-pass intubation failure significantly increase the risk of peri-intubation severe hypoxemia. As obesity is linked to a higher likelihood of first-pass intubation failure, likely driven by more challenging airway features, in this high-risk population first attempt should be performed by an expert operator to minimize peri-intubation complications.

 

ESICM—ESPNIC international expert consensus on quantitative lung ultrasound in intensive care

Intensive Care Medicine Published: 12 May 2025

Purpose

To provide an international expert consensus on technical aspects and clinical applications of quantitative lung ultrasound in adult, paediatric and neonatal intensive care.

Methods

The European Society of Intensive Care (ESICM) and the European Society of Paediatric and Neonatal Intensive Care (ESPNIC) endorsed the project. We selected an international panel of 20 adult, paediatric and neonatal intensive care experts with clinical and research expertise in quantitative lung ultrasound, plus two non-voting methodologists. Fourteen clinical questions were proposed by the chairs to the panel, who voted for their priority (1–9 Likert-type scale) and proposed modifications/supplementing (two-round vote). All the questions achieved the predefined threshold (mean score > 5) and 14 groups of 3 mixed adult/paediatric experts were identified to develop the statements for each clinical question; predefined groups of experts in the fields of adult and paediatric/neonatal intensive care voted statements specific for these subgroups. An iterative approach was used to obtain the final consensus statements (two-round vote, 1–9 Likert-type scale); statements were classified as with agreement (range 7–9), uncertainty (4–6), disagreement (1–3) when the median score and ≥ 75% of votes laid within a specific range.

Results

A total of 46 statements were produced (4 adults-only, 4 paediatric/neonatal-only, 38 interdisciplinary); all obtained agreement. This result was also achieved by acknowledging in the statements the current limitations of quantitative lung ultrasound.

Conclusion

This consensus guides the use of quantitative lung ultrasound in adult, paediatric and neonatal intensive care and helps identify the fields where further research will be needed in the future.

 

Physiological comparison of noninvasive ventilation and high-flow nasal oxygen on inspiratory efforts and tidal volumes after extubation: a randomized crossover trial

Critical Care volume 29, Article number: 185 Published: 08 May 2025

Background

Extubation failure leading to reintubation is associated with high mortality. In patients at high-risk of extubation failure, clinical practice guidelines recommend prophylactic non-invasive ventilation (NIV) over high-flow nasal oxygen (HFNO) immediately after extubation. However, the physiological effects supporting the beneficial effect of NIV have been poorly explored. We hypothesized that NIV may reduce patient inspiratory efforts to a greater extent than HFNO after extubation.

Methods

In a prospective physiological study, patients at high-risk of extubation failure (> 65 years old or underlying cardiac or respiratory disease) were included to receive after planned extubation prophylactic NIV and HFNO in a randomized crossover order, followed by standard oxygen. Inspiratory efforts were assessed by calculation of the simplified esophageal pressure–time-product per minute (sPTP_es in cmH₂O s/min). Tidal volumes, distribution and homogeneity of ventilation were estimated using electrical impedance tomography.

Results

Twenty patients were retained in the analysis. Inspiratory efforts were lower with NIV than with HFNO (sPTP_es 196 cm H₂O s/min [116–234] vs. 220 [178–327], p < 0.001) whereas tidal volumes were larger with NIV than with HFNO (8.4 mL/kg of predicted body weight [6.7–9.9] vs. 6.9 [5.3–8.6], p = 0.005). There was a non-significant increase in dorsal region ventilation under NIV compared to HFNO.

Conclusions

In patients at high-risk of extubation failure, prophylactic NIV significantly decreased inspiratory efforts with increased tidal volumes compared to HFNO. The clinical benefits of NIV to prevent reintubation in patients at high-risk may be mediated by these physiological effects.

 

Incidence and Associated Risk Factors for Falls in Adults Following Critical Illness: An Observational Study

Critical Care Medicine : April 18, 2025.

Objective: 

To explore the incidence of falls and associated risk factors in the first year after hospital discharge in survivors of critical illness.

Design: 

Prospective single-site observational study.

Setting: 

University-affiliated mixed ICU.

Patients: 

One hundred ICU adults who required invasive ventilation for 48 hours and in an ICU for at least 4 days.

Interventions: 

Not applicable.

Measurements and Main Results: 

Falls were monitored prospectively for 1 year with completion of monthly falls calendars. Falls data included the number of people who had falls/no falls/recurrent falls, falls rate per person per year, and time to first fall. Fall severity was classified according to the Schwenck classification scheme to examine injurious falls requiring medical intervention. Other outcomes considered included assessments of balance, strength, function, cognition, psychologic health, and health-related quality of life. One hundred participants (31% female) were recruited with a mean age of 58.3 ± 16.2 years, and a median ventilation duration of 6.3 days [4.0–9.1]. Sixty-one percent fell at least once in the first year with the majority sustaining two or more falls (81.4%) and one in four sustained an injurious fall requiring medical attention. The falls incidence rate was 4.4 falls per person-year (95% CI, 3.2–5.9), with the highest incidence occurring less than 3 months after hospital discharge (5.9 falls/person-year [95% CI, 4.4–7.8]). Time to first fall or injurious fall was 36 [11–66] and 95 (95% CI, 40–155) days, respectively. Key risk factors for falls at the time of hospital discharge include comorbidities, higher discharge medications, balance, and muscle strength.

Conclusions: 

There was a high falls incidence in ICU survivors. The study findings suggest a critical window may exist within the first 3 months after hospital discharge and the need for screening, pharmacological optimization, and exercise training in this patient group.

 

Depression or anxiety and long-term mortality among adult survivors of intensive care unit: a population-based cohort study

Critical Care volume 29, Article number: 179 (2025) Published: 06 May 2025

Background

Many patients who survive intensive care unit (ICU) stays experience persistent mental impairments. It is estimated that one-third of ICU survivors suffer from psychiatric disorders. However, research into how these disorders affect long-term outcomes in this population is scarce. Therefore, the aim of this study is to investigate the association between depression or anxiety and long-term mortality among ICU survivors.

Methods

This population-based cohort study included patients admitted to the ICU between January 1, 2015 and December 31, 2019, who survived at least 1 year after ICU discharge. Exclusions were made for patients admitted for non-medical reasons and those who had been in the ICU in the previous 2 years, and 799,645 patients were included in the study. Follow-up data were obtained for up to 7 years. The primary outcome was long-term cumulative mortality. Mortality rates for patients with and without diagnoses of depression or anxiety were compared.

Results

Of the 799,645 adult ICU survivors, 98,530 (12.3%) were newly diagnosed with depression or anxiety post-discharge, and 265,092 (33.2%) had been diagnosed prior to ICU admission. Multivariate Cox proportional hazards regression analysis revealed that the adjusted hazard ratio (HR) for long-term mortality was 1.17 (95% CI, 1.16–1.19) for those newly diagnosed with depression or anxiety, 1.28 (95% CI, 1.26–1.30) for depression alone, and 1.08 (95% CI, 1.06–1.11) for anxiety alone. For those with prior diagnoses, the adjusted HR was 1.08 (95% CI, 1.07–1.09) overall, 1.12 (95% CI, 1.11–1.14) for depression, and 1.04 (95% CI, 1.03–1.05) for anxiety.

Conclusions

ICU survivors newly diagnosed with depression or anxiety exhibit higher long-term mortality rates compared to those without such diagnoses, including those diagnosed before ICU admission. Particularly, newly diagnosed depression is associated with an elevated mortality rate. These findings underscore the need for psychological interventions to enhance long-term survival among ICU survivors.

 

 

Association of low-dose ketamine with hallucinations in critically ill patients: a target trial emulation

Intensive Care Medicine: Published 05 May 2025

Purpose

Ketamine use is a potentially modifiable risk factor for hallucinations. We aimed to use target trial emulation to investigate the association between low-dose ketamine and development of hallucinations in critically ill patients in the intensive care unit (ICU).

Methods

Retrospective study using data from a university affiliated ICU in Melbourne, Australia. Application of marginal structural models and parametric g-formulas to assess the impact of low-dose ketamine on the development of hallucinations.

Results

We studied 7514 patients from June 2016 to April 2021. Of these, 625 patients (8%) received low-dose ketamine, beginning at a median of 0 (0–1) days from ICU admission and at a mean daily dose of 0.11 (0.08–0.15) mg/kg/h. Low-dose ketamine treated patients had a higher rate of hallucinations within 30 days of ICU admission (26% vs. 7%; p < 0.001) and the first episode of hallucination occurred earlier than in unexposed patient (2 [1–3] vs. 3 [1–7] days from ICU admission; p < 0.001). After adjustment for baseline and time-dependent confounders, low-dose ketamine was associated with a higher risk of hallucinations within 30 days (OR, 6.46 [95% CI 5.17–8.07]; p < 0.001). These findings were confirmed with parametric g-formulas.

Conclusions

In ICU patients, low-dose ketamine was strongly associated with an increased risk of hallucinations. However, these findings should be interpreted with caution due to the observational nature of the study and the risk of residual confounding.

 

Maintaining ventilation with very low tidal volume and positive-end expiratory pressure versus no ventilation during cardiopulmonary bypass for cardiac surgery in adults: a randomized clinical trial

Intensive Care Medicine: Published 05 May 2025

Purpose

Cardiopulmonary bypass (CPB) during cardiac surgery mechanically circulates and oxygenates the blood, bypassing the heart and lungs. Despite limited evidence, maintaining mechanical ventilation (MV) during CPB is recommended, as ventilator strategies during surgery may reduce the occurrence of postoperative infections. We aimed to determine whether maintaining MV for cardiac surgery would decrease postoperative infections compared with stopping MV during CPB.

Methods

We conducted a multicenter, single-blind, randomized trial among adult patients undergoing scheduled cardiac surgery with CPB in six hospitals in France. During CPB, the tracheal tube was disconnected from the ventilator in the control group (MV- group). In the MV + group, ventilation was maintained during CPB with very low tidal volume ventilation, using a tidal volume of 2.5 mL/kg of predicted body weight, with 5–7 cmH₂O positive end expiratory pressure. The primary outcome was the occurrence of all types of postoperative infections within the first 28 days after surgery. There were six secondary evaluation criteria including the number of days of exposure to antibiotics.

Results

A total of 1362 patients were enrolled in the study. Postoperative infection occurred in 74 out of 680 patients (10.9%) in the MV− group, compared to 68 out of 682 patients (10.0%) in the MV + group (relative risk, 0.92; 95% confidence interval [CI] 0.67–1.25; p = 0.58). Antibiotic use was higher in the MV + group than in the MV- group (incidence risk ratio, 1.08; 95% CI 1.02–1.15; p = 0.02). There were no significant differences between the groups for all other secondary outcomes or for the incidence of adverse events.

Conclusions

Maintaining very low tidal volume ventilation with positive end-expiratory pressure during CPB did not reduce postoperative infections at 28 days compared to when mechanical ventilation was stopped during CPB. An unexpectedly higher use of antibiotics was observed when ventilation was maintained.

Critical Care Bulletin: April 2025

 

A randomized controlled trial of catheters with different tips and lengths for patients requiring continuous renal replacement therapy in intensive care unit

Critical Care volume 29, Article number: 148 (2025) Published: 11 April 2025

Background

The tip design and length of catheter impact catheter function. Two types of catheters with different tips, side-hole catheters and step-tip catheters, are commonly used during continuous renal replacement therapy (CRRT). However, there is insufficient evidence comparing their efficacy and safety in CRRT. In addition, whether the insertion of a longer catheter could enhance catheter function remains poorly studied and controversial.

Methods

In this open-label, three-arm, randomized trial, critically ill patients receiving CRRT were randomized to three groups. Group A received 20 cm side-hole catheters (GDHK‐1120), group B received 20 cm step-tip catheters (GDHK‐1320) and group C received 25 cm step-tip catheters (GDHK‐1325). The primary outcomes were the incidence of catheter dysfunction and catheter survival time.

Results

A total of 351 patients were enrolled, with 116 in group A, 117 in group B, and 118 in group C. The incidence of catheter dysfunction in group A (35.7%, 51/143) was significantly higher than that in group B (17.7%, 22/124) (P = 0.001). However, there was no difference between group B and group C (15.6%, 23/147) (P = 0.744). The catheter survival time was comparable between group A (5.5 days, IQR 2.5–9.3) and group B (5.0 days, IQR 3.0–10.0) (P = 0.626). In contrast, group C (6.4 days, IQR 3.9–12.0) demonstrated a significantly longer catheter survival time compared to group B (P = 0.019). Cox regression analysis identified BMI (HR 1.052, 95% CI 1.003–1.103, P = 0.036) as an independent risk factor for catheter dysfunction. Results were not consistent across BMI tertiles, with similar results observed only in patients with a lower BMI (BMI < 24.2) (chi-square 13.65, P = 0.001). There was also a trend that patients in group C have a longer filter lifespan (36.5 h, IQR 16.9–68.1, P = 0.001) and a lower incidence of catheter-related thrombosis (10.40 per 1000 catheter-days, 95% CI 5.93, 17.83, P = 0.019). Other secondary outcomes were not significantly different among groups.

Conclusions

Step-tip catheters may be preferable for CRRT, particularly for patients in the lower BMI tercile. Longer femoral vein catheterization demonstrated enhanced benefits in CRRT, especially among obese patients. Further high-quality, multicenter RCTs are essential to strengthen the evidence guiding catheter selection during CRRT.

 

 

Comparison of all-cause mortality with different blood glucose control strategies in patients with diabetes in the ICU: a network meta-analysis of randomized controlled trials

Annals of Intensive Care volume 15, Article number: 51 (2025) Published: 09 April 2025

Background

The optimal glucose control strategy for intensive care unit (ICU) patients with diabetes remains a topic of debate. This study aimed to compare the effects of strict glucose control, intermediate strict glucose control, liberal glucose control, and very liberal glucose control on reducing all-cause mortality in ICU patients with diabetes through a network meta-analysis.

Methods

We conducted a search in PubMed, Cochrane Library, Embase, and Web of Science for randomized controlled trials comparing different glucose control strategies in ICU patients with diabetes up to October 1, 2024. The primary outcome was all-cause 90-day mortality. The Risk of Bias 2 tool was used to assess bias in the included studies. Data analysis was performed using Stata (version 17).

Results

A total of 12 randomized controlled trials involving 5,297 participants were included in the final analysis. The results showed that there was no statistically significant difference between the four glucose control strategies in reducing all-cause 90-day mortality. The surface under the cumulative ranking (SUCRA), which was used to rank the strategies and display the probability of each strategy being ranked first, showed the following: intermediate strict control (SUCRA 88%), liberal control (SUCRA 55.3%), very liberal control (SUCRA 40.3%), and strict control (SUCRA 16.5%). The cumulative probability of each strategy’s rank in reducing all-cause mortality, from best to worst, showed that the most likely ranking was intermediate strict control, liberal control, very liberal control, and strict control.

Conclusions

In ICU patients with diabetes, no significant statistical difference was observed among the four glucose control strategies in reducing all-cause 90-day mortality. The SUCRA rankings are hypothesis-generating and require further validation. Therefore, the current evidence is insufficient to definitively conclude that any one strategy is superior to the others in reducing mortality.

 

Monitoring patients with acute respiratory failure during non-invasive respiratory support to minimize harm and identify treatment failure

Critical Care volume 29, Article number: 147 (2025) Published: 09 April 2025

Abstract

Non-invasive respiratory support (NRS), including high flow nasal oxygen therapy, continuous positive airway pressure and non-invasive ventilation, is a cornerstone in the management of critically ill patients who develop acute respiratory failure (ARF). Overall, NRS reduces the work of breathing and relieves dyspnea in many patients with ARF, sometimes avoiding the need for intubation and invasive mechanical ventilation with variable efficacy across diverse clinical scenarios. Nonetheless, prolonged exposure to NRS in the presence of sustained high respiratory drive and effort can result in respiratory muscle fatigue, cardiovascular collapse, and impaired oxygen delivery to vital organs, leading to poor outcomes in patients who ultimately fail NRS and require intubation. Assessment of patients’ baseline characteristics before starting NRS, close physiological monitoring to evaluate patients’ response to respiratory support, adjustment of device settings and interface, and, most importantly, early identification of failure or of paramount importance to avoid the negative consequences of delayed intubation. This review highlights the role of respiratory monitoring across various modalities of NRS in patients with ARF including dyspnea, general respiratory parameters, measures of drive and effort, and lung imaging. It includes technical specificities related to the target population and emphasizes the importance of clinicians’ physiological understanding and tailoring clinical decisions to individual patients’ needs.

 

Visual coronary artery calcification score to predict significant coronary artery stenosis in patients presenting with cardiac arrest without ST-segment elevation myocardial infarction

Annals of Intensive Care volume 15, Article number: 50 (2025) Published: 07 April 2025

Background

Emergency coronary angiogram after a cardiac arrest without ST-segment elevation myocardial infarction (STEMI) is still a matter of debate. To better select patients who may benefit from this procedure, we tested a visual coronary artery calcification (VCAC) score available in chest CT to predict significant coronary artery stenosis and/or culprit lesion or ad hoc or delayed percutaneous coronary intervention (PCI).

Results

A total of 113 patients with cardiac arrest and without STEMI who had a coronary angiogram and chest CT (January 2013 to March 2023, Croix-Rousse Hospital, Lyon, France) were retrospectively included. VCAC was scored from 0 (no calcification) to 3 (diffuse calcification) for each 4 four main arteries (left main, left anterior descending, circumflex, and right coronary artery). At baseline the median [interquartile range] age was 65.8 years [53.4–75.7], 61.9% were male, and 59.3% presented with ventricular fibrillation. Coronary angiogram identified at least one significant coronary artery stenosis in 32.7%, and ad hoc and delayed PCI were performed in 12.4% and 6.2% of the patients, respectively. VCAC score was an excellent predictor of significant coronary artery stenosis with an area under the ROC curve (AUC) of 0.95 (95%CI [0.90-1.00]) and the optimal threshold was ≥ 4 (specificity 94.7%, sensitivity 91.9%). For the detection of culprit coronary artery stenosis, the AUC was at 0.90 (95%CI [0.85–0.96]) and the optimal threshold was ≥ 5 (specificity 83.5%, sensitivity 87.5%). The AUC was 0.886 [0.823–0.948] (specificity 81.8%, sensitivity 85.7%) for ad hoc PCI and 0.921 [0.872–0.972] (specificity 85.3%, sensitivity 88.9%) for both delayed and ad hoc PCI with a same optimal threshold of VCAC ≥ 5. A VCAC score ≥ 4 had a sensitivity at 100% to predict a significant or culprit coronary artery stenosis and ad hoc or delayed PCI.

Conclusions

The present study found that a non-dedicated CT thorax may be useful to measure VCAC and if this is scored ≥ 4 it allows physicians to better select patients resuscitated from cardiac arrest with non-STEMI and without history of coronary artery disease who may benefit from an emergency coronary angiogram to detect a significant or culprit coronary artery stenosis and had PCI if appropriate.

 

Prognosis of liver abscess in the intensive care unit (POLAIR), a multicentre observational study

Critical Care volume 29, Article number: 146 (2025) Published: 07 April 2025

Background

Liver abscess (LA) is a rare but potentially serious condition with a high mortality rate. Current epidemiological data of LA patients requiring intensive care unit (ICU) admission are limited.

Methods

This multicentre retrospective study included adults admitted to 24 ICUs in France between January 2010 and December 2020. Risk factors for mortality were identified by multivariate analysis. A propensity score was used to adjust for confounders related to the presence of portal vein thrombosis.

Results

335 patients were enrolled. The median age was 66 years [53–73] and 68% were male. Commons comorbidities included diabetes (29.9%) and cancer or haematological disease. Septic shock was the main reason for admission (58%). The median SAPS2 score at ICU admission was 42 [31–53] and the SOFA score was 6 [3–9]. The putative origin of LA was biliary (31%), while 40% were cryptogenic. Most patients (60%) had a solitary LA, involving the right lobe (38.8%), with a median diameter of 67 mm [47–91]. Associated portal vein thrombosis (PVT) was present in 13.4% of cases. Microbiological documentation was obtained in 82% of patients, showing gram-negative bacilli (59.7%), mainly Escherichia coli (19.6%) and Klebsiella spp. (19.1%), and gram-positive cocci (29.6%), mainly Streptococcus spp. (17.1%). Drainage was performed in 62% of cases, 40% within 48 h. The median duration of antibiotic therapy was 35 days [21–42]. During hospitalisation, 62% of patients required vasopressors and 29% required mechanical ventilation. In-ICU mortality was 11.6%. Multivariate analysis showed that organ dysfunction illustrated by SOFA score (HR 3.45 [1.95–6.09], p < 0.001) and PVT (HR 3.14 [1.54–6.39], p = 0.001) were significant risk factors for mortality. Drainage was not associated with improved short-term survival (HR 1.22 [0.65–2.72], p = 0.52). In the population matched for PVT confounders, a higher sofa score was the only factor associated with mortality (HR 3.11 [1.76–5.49] IC95%, p = 0.001).

Conclusions

This multicentre study illustrates the severity of LA in French intensive care units and identifies organ dysfunction (SOFA score) and portal vein thrombosis as major risk factors for mortality. Prospective studies are needed to improve management strategies, as the survival benefit of drainage is unclear.

 

Does Levosimendan hasten veno-arterial ECMO weaning? A propensity score matching analysis

Annals of Intensive Care volume 15, Article number: 48 (2025) Published: 03 April 2025

 

Background

Preliminary evidence from small, single-center studies suggests levosimendan may improve the likelihood of successful venoarterial extracorporeal membrane oxygenation (VA-ECMO) weaning in patients with cardiogenic shock. However, the literature is limited and presents conflicting results. We aimed to assess the benefits of levosimendan on VA-ECMO for time to successful ECMO weaning, using a pragmatic and rigorous definition of successful VA-ECMO weaning in patients with potential for cardiac function recovery.

Methods

A retrospective bicentric study over 6 years was conducted, including patients who received levosimendan during their ECMO course. Patients with post-cardiotomy cardiogenic shock or end-stage chronic heart failure were excluded. Patients receiving levosimendan while on VA-ECMO were matched to those not receiving levosimendan during the same period, based on pre-specified variables and time from ECMO initiation. The primary endpoint was successful VA-ECMO weaning, defined as survival without death, heart transplantation, or LVAD within 30 days after VA-ECMO withdrawal.

Results

Over the study period, 320 patients treated with VA-ECMO for refractory cardiogenic shock were included, of whom 68 received levosimendan during their ECMO course. Propensity score matching yielded 47 unique pairs of patients with comparable characteristics. After matching, successful ECMO weaning was achieved in 16 out of 47 patients (34%) in the no-levosimendan group and 21 out of 47 patients (45%) in the levosimendan group (sHR, 1.45 [95% CI, 0.77–2.70]; P = 0.25). Similarly, there were no significant differences between the groups in terms of bridge-to-heart transplant, LVAD, or death. Left ventricular ejection fraction and aortic velocity time integral improved significantly after levosimendan in all patients, regardless of their VA-ECMO weaning status.

Conclusion

In patients with non-postoperative cardiogenic shock supported by peripheral VA-ECMO, levosimendan was not associated with increased rates of successful VA-ECMO weaning or improved 30-day and 6-month bridge-free survival. Results from double-blinded randomized controlled trials are urgently needed to clarify the effectiveness and optimal timing of levosimendan in this specific population.

 

Automatic continuous P0.1 measurements during weaning from mechanical ventilation: a clinical study

Annals of Intensive Care volume 15, Article number: 47 (2025) Published: 01 April 2025

Background

In critically ill patients, weaning from mechanical ventilation (MV) includes spontaneous breathing trial (SBT) usually followed by a reventilation period in order to recover from the alveolar derecruitement induced by the SBT. The measurement of occlusion pressure during the first 100 ms of an airway occlusion (P0.1) one of the non-invasive tools available for estimating the respiratory drive, is a determinant of patient respiratory effort. This clinical study explores the use of non-invasive continuous monitoring of occlusion pressure automatically calculated by ventilators in the first 100 ms of airway occlusion (P0.1 vent) during SBT and reventilation periods. The study aimed to investigate patient or respirator factors influencing P0.1 vent as well as the association of P0.1 vent values with extubation success or failure.

Patients and Methods

This prospective observational study, conducted from February 2022 to April 2023, included adult patients intubated for more than 24 h and screened for extubation weaning. SBTs were performed for one hour with zero pressure support and zero end-expiratory pressure (PS0 ZEEP). Reventilation followed for an hour with pressure support (8–12 cmH2O) and PEEP (5 cmH2O). Data included patient characteristics, ventilator parameters and extubation outcomes.

Results

The study involved 224 measurements from 212 patients, with 157 successful extubations, 46 extubation failures at day 7 and 21 SBT failures. P0.1 vent mean values were significantly higher for extubation failures and SBT failures compared to successful extubations (p < 0.001). Delta P0.1 vent ((P0.1 vent reventilation - P0.1 vent SBT)/ P0.1 vent SBT) was significantly different according to whether extubation was a success or a failure: 0.21 (0.02–0.62) cm H2O vs. P0.1 vent vs. 1.12 (0.54–2.38) cm H2O; p < 0.0001 respectively. Values significantly differed in both the SBT and the reventilation periods whether or not patients had previous ARDS: 1.08 (0.70; 2.02) cmH2O vs. 0.80 (0.54; 1.28) cmH2O respectively (p = 0.003). Noteworthy, P0.1 vent values were influenced by airway humidification systems (0.92 (0.57; 1.54) cmH2O with humidification vs. 1.27 (0.91; 2.24) cmH2O without, p = 0.003).

Conclusion

The delta of P0.1vent values between SBT and reventilation are higher for patients who fail extubation, especially for those who had ARDS. While elevated P0.1 vent values were associated with extubation failure, the overlap in values limits its usefulness as a reliable predictor.

 

Incidence and risk factors of weaning-induced pulmonary oedema: results from a multicentre, observational study

Critical Care volume 29, Article number: 140 (2025) Published: 31 March 2025

Background

During the weaning process, the transition from positive to negative pressure ventilation may induce cardiac dysfunction, which may lead to pulmonary oedema. The incidence of weaning-induced pulmonary oedema (WIPO) is poorly documented and shows huge variations. Our study aims to investigate the incidence and risk factors for WIPO during weaning from mechanical ventilation in general critically ill patients.

Methods

This multicentre study was conducted in France, Italy, and India. Adult critically ill patients receiving invasive ventilation were included once a spontaneous breathing trial (SBT) was performed. The SBT technique could be either T-piece or pressure support mode with (PSV-PEEP) or without positive end expiratory pressure (PEEP) (PSV-ZEEP). A consensual diagnosis of WIPO was made a posteriori by five experts who analysed changes observed during the SBT that were retrospectively recorded.

Results

From July 2019 to February 2021, 634 SBTs were performed in 500 patients from 13 ICUs. Weaning success occurred in 417 patients (66%) and weaning failure in 217 (34%). Weaning was short in 414 (83%) of SBTs, difficult in 47 (9%) SBTs, and prolonged in 39 (8%) SBTs. WIPO was diagnosed in 79 (12%) cases, which accounted for 36% of the 217 weaning failures. WIPO occurred in 54/358 (15%) of T-piece SBT, in 7/84 (8%) of PSV-PEEP SBT (p = 0.072 vs. T-piece), and in 18/192 (9%) of PSV-ZEEP SBT (p = 0.002 vs. T-piece). In multilevel logistic regression analysis including 202 weaning failures from 149 different patients, COPD, and previous cardiomyopathy were identified as independent risk factors associated with WIPO.

Conclusion

In general ICU patients, WIPO accounts for 36% of weaning failure cases. Previous heart disease and COPD are two independent risk factors for developing WIPO during the weaning process.

 

A consensus of European experts on the definition of ventilator-associated pneumonia recurrences obtained by the Delphi method: the RECUVAP study

Intensive Care Medicine: Published 31 March 2025

Background

There are recognized diagnostic criteria for a first ventilator-associated pneumonia (VAP) episode, but not for recurrences. Many randomized clinical trials (RCTs) have used the recurrence of VAP as a criterion for efficacy evaluation. Still, the different definitions used in RCTs make it difficult to compare studies. We aimed to develop a consensual definition of VAP recurrences and of the various types of VAP recurrences.

Methods

Thirty-six European experts constituting a multidisciplinary group of physicians (critical care, infectious diseases, microbiology) with special interest in the management of VAP were polled using the Delphi methodology.

Results

After the completion of four iterations of the DELPHI method, 94% of experts agreed that the diagnostic criteria for a first VAP episode could also be used for recurrences, except for the radiological criterion, which not all the experts considered to be mandatory. Consensus was also reached regarding the definition of four distinct entities: relapse, persistent VAP, superinfection, and new-pathogen VAP. For relapse and persistent VAP, bacteriological findings were identical for different VAP episodes, whereas they differed for superinfection and new-pathogen VAP. The distinction between relapse and persistent VAP, and between superinfection and new-pathogen VAP depended on the timing of antibiotic treatment (before or after 48–72 h after the end of antibiotic therapy) and the clinical course. Microbiological criteria were proposed to facilitate the diagnosis of persistent VAP.

Conclusion

This consensus by European experts proposes four different VAP recurrence entities which should facilitate the harmonization of recurrence criteria for clinical practice and future studies.

 

Haloperidol in treating delirium, reducing mortality, and preventing delirium occurrence: Bayesian and frequentist meta-analyses

Critical Care volume 29, Article number: 126 (2025) Published: 20 March 2025

Background

Although haloperidol is commonly used to treat or prevent delirium in intensive care unit (ICU) patients, the evidence remains inconclusive. This study aimed to comprehensively evaluate the efficacy and safety of haloperidol for delirium treatment and prevention in ICU patients.

Methods

We searched MEDLINE, the cochrane central register of controlled trials, EMBASE, ClinicalTrial.gov, and PubMed without language restrictions from database inception to June 27, 2024. We included double-blind randomized controlled trials (RCTs) on haloperidol versus placebo for treating and preventing delirium in adult ICU patients. In addition to frequentist analyses, Bayesian analysis was used to calculate the posterior probabilities of any benefit/harm and clinically important benefit/harm (CIB/CIH). The primary outcomes for delirium treatment were all-cause mortality and serious adverse events (SAEs). For delirium prevention, the primary outcomes included incident delirium, all-cause mortality, and SAEs. The secondary outcomes for efficacy were delirium-or coma-free days, ventilator-free days, length of stay in ICU, length of stay in hospital, and rescue benzodiazepine use. The secondary outcomes for safety were QTc prolongation and extrapyramidal syndrome.

Results

We included seven RCTs on delirium treatment (n = 1767) and five on delirium prevention (n = 2509). The Bayesian analysis showed that, compared to placebo for delirium treatment, haloperidol had a 68% probability of achieving CIB (defined as risk difference [RD] < −0.02) in reducing all-cause mortality, a 2% probability of achieving CIH (RD > 0.02) in causing SAEs, and a 78% probability of achieving CIB (RD < −0.02) in reducing the need for rescue benzodiazepine use. The probabilities of haloperidol causing CIH (RD > 0.02) across all other safety outcomes were low (all < 50%). In frequentist analysis on delirium treatment, the pooled estimated RD for haloperidol compared to placebo was -0.05 (−0.09, −0.00; I2 = 0%) for rescue benzodiazepine use. In Bayesian analysis on delirium prevention, haloperidol had a 12% probability of achieving CIB in all-cause mortality, a 34% probability of achieving CIB in delirium incidence, and a 0% probability of achieving CIB in SAEs. Importantly, haloperidol had a 65% probability of causing CIH (risk ratio > 1.1) for QTc prolongation, while the posterior probabilities of achieving CIB across all efficacy outcomes were low (all < 50%). In frequentist analysis on delirium prevention, all primary and secondary outcomes were not statistically significant in frequentist analysis.

Conclusion

Our study supported the use of haloperidol for delirium treatment in adult ICU patients, but not for delirium prevention.

 

Intraosseous versus intravenous vascular access in out-of-hospital cardiac arrest: a systematic review and meta-analysis of randomized controlled trials

 

Critical Care volume 29, Article number: 124 (2025) Published: 19 March 2025

 

Background

Rapid and reliable vascular access is crucial during cardiopulmonary resuscitation for out-of-hospital cardiac arrest (OHCA). While intraosseous (IO) and intravenous (IV) access are used, their comparative effectiveness for patient outcomes remains uncertain.

Methods

We searched PubMed, Embase, and ClinicalTrials.gov for RCTs comparing IO vs. IV access in adults with OHCA. The primary outcome was survival (30 days or until discharge), while secondary outcomes included sustained ROSC, favorable neurological outcome, successful first-attempt vascular access, and time from emergency medical service arrival to access. Pooled odds ratios (OR), mean differences (MD), and 95% confidence intervals (CI) were calculated.

Results

Four RCTs with 9475 patients were included. No significant differences were found between IO and IV groups in survival (6.6% vs. 6.9%, OR 0.99, 95% CI 0.84–1.18) or favorable neurological outcome (4.7% vs. 4.6%, OR 1.07, 95% CI 0.88–1.30). The sustained ROSC rate was numerically, but not significantly, lower in IO vs. IV access (24.6% vs. 27.0%, OR 0.92, 95% CI 0.80–1.06). IO access had a higher first-attempt success rate (92.3% vs. 62.3%; OR 6.18, 95% CI 3.50–10.91) and was 15 s faster than IV for vascular access (IO: 11.03 ± 5.57, IV: 11.35 ± 6.16 min, MD − 0.25, 95% CI − 0.48 to − 0.01).

Conclusions

IO access had a higher first-attempt success rate and faster establishment than IV access, but no significant differences were found in survival or favorable neurological outcomes in adults with OHCA. Sustained ROSC was numerically lower with IO access than IV access, although the difference was not statistically significant.

Critical Care Bulletin: February 2025

 

Relationship between skin microvascular blood flow and capillary refill time in critically ill patients

Critical Care volume 29, Article number: 57 (2025)

Published: 04 February 2025

Background

Capillary refill time (CRT) and skin blood flow (SBF) have been reported to be strong predictors of mortality in critically ill patients. However, the relationship between both parameters remains unclear.

Methods

We conducted a prospective observational study in a tertiary teaching hospital. All patients older than 18 years admitted in the intensive care unit (ICU) with circulatory failure and a measurable CRT were included. We assessed index SBF by laser doppler flowmetry and CRT on the fingertip, at T0 (Within the first 48 h from admission) and T1 (4 to 6 h later). Correlation was computed using Spearman or Pearson’s formula.

Results

During a 2-month period, 50 patients were included, 54% were admitted for sepsis. At baseline median CRT was 2.0 [1.1–3.9] seconds and median SBF was 46 [20–184] PU. At baseline SBF strongly correlated with CRT (R2 = 0.89; p < 0.0001, curvilinear relationship), this correlation was maintained whether patients were septic or not (R2 = 0.94; p = 0.0013; R2 = 0.87; p < 0.0001, respectively), and whether they received norepinephrine or not (R2 = 0.97; p = 0.0035; R2 = 0.92; p < 0.0001, respectively). Between T0 and T1, changes in SBF also significantly correlated with changes in CRT (R2 = 0.34; p < 0.0001). SBF was related to tissue perfusion parameters such as arterial lactate level (p = 0.02), whilst no correlation was found with cardiac output. In addition, only survivors significantly improved their SBF between T0 and T1. SBF was a powerful predictor of day-28 mortality as the AUROC at T0 was 85% [95% IC [76–91]] and at T1 90% [95% IC [78–100]].

Conclusion

We have shown that index CRT and SBF were correlated, providing evidence that CRT is a reliable marker of microvascular blood flow.

Trial registration Comité de protection des personnes Ouest II N° 2023-A02046-39.