Critical care management
of systemic mastocytosis: when every wasp is a killer bee
Since the critical
care physician will most likely be involved in a life-threatening expression of
systemic mastocytosis, recognition of this disease is of utmost importance in
the critical care management of these patients. Mastocytosis is a severely under-recognized
disease because it typically occurs secondary to another condition and thus may
occur more frequently than assumed. In this article, we will review the current
knowledge on the treatment of mastocytosis crises with an emphasis on critical
care management. Mastocytosis is characterized by the clonal proliferation and
accumulation of mast cells in different tissues. Mast cell mediators contain a
wide range of biologically active substances that may lead to itching and hives
but may ultimately lead to anaphylactic shock caused by the release of
histamine and other mediators from mast cells. The mainstay of therapy is the
avoidance of potential triggers of mast cell degranulation and, if
unsuccessful, blocking the cascade of mast cell mediators. The critical care
physician should be well aware of the special precautions which should be kept
in mind throughout the management of a mastocytosis crisis to avoid massive
mast cell degranulation. Histamine-releasing drugs and certain physical
triggers like temperature change should be avoided.
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