Exothermic reaction in zeolite hemostatic dressings: QuikClot ACS and ACS+

Annals of Biomedical Engineering
Françoise ArnaudRichard M McCarron

Abstract

Zeolites have hemostatic properties used to stop bleeding in severe hemorrhage. Manufactured QuikClot is an approved zeolite-based hemostatic agent for battlefield use. The exothermic reaction associated with QuikClot as loose granules or as granules packaged in a mesh bag has potential burn effects; this led to the development of a formulation of "cooler" non-exothermic QuikClot. The goal of this study was to compare the elevation of temperature of these formulations upon contact with blood. Following full transection of the femoral vasculature, anesthetized Yorkshire pigs (n = 15) (28.8 +/- 1.5 kg) were hemorrhaged for 2 min and treated with 100 g of bagged QuikClot (Advanced Clotting Sponge (ACS) (n = 4)) or a modified non-exothermic formulation (ACS+ (n = 11)). Vital signs and temperature at the dressing/tissue interface were continuously recorded for 3 h. Additional procedures were used to examine effects of different ratios of blood to zeolite on temperature elevation. Total post-treatment blood loss was comparable for ACS+_E and ACS_E groups (overall average: 18.6 +/- 10.5% EBV). Temperature recorded at the dressing/tissue interface was significantly lower with ACS+ vs. ACS (40.3 +/- 1.8 vs. 61.4 +/- 10.7 degrees C, resp...Continue Reading

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