Anaphylactoid Reactions to Vascular Graft Material Presenting with Vasodilation and Subsequent Disseminated Intravascular Coagulation

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Abstract
This report describes five patients who had immediate adverse reactions following placement of a vascular graft. All had usually presistent decreases in systemic vascular resistance, and four of these patients had bleeding as an early manifestation of this reaction. In two of three patients in whom the graft was replaced, uneventful recovery followed. Both patients in whom the graft was not replaced died. Blood samples from two of the patients demonstrated activation of complement and of the kinin system, whereas control patients did not demonstrate increased levels of activation products from these cascade systems. Recognition of this syndrome is important to patient survival, which appears to depend on rapid replacement.