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. 1979 Aug;190(2):227–230. doi: 10.1097/00000658-197908000-00016

Intravascular Coagulation and Fibrinolysis within Primate Extremities During Tourniquet Ischemia

Stephen H Miller, M Elaine Eyster, Abdus Saleem, Larry Gottleib, David Buck, William P Graham III
PMCID: PMC1344491  PMID: 111639

Abstract

A common although infrequently recognized complication associated with the use of a pneumatic tourniquet is profuse bleeding from the wound after deflation of the tourniquet. The purpose of this study was to determine whether intravascular coagulation and fibrinolysis could be induced in subhuman primates by tourniquet ischemia, and whether this phenomenon could be altered by pretreatment of the animal with heparin. It was shown that, after 2½ hours of tourniquet ischemia, (400 mmHg) to one lower limb, fibrinogen levels were significantly lower (p < .005), antithrombin III levels were significantly lower (p < .05), plasminogen levels were significantly lower (p < .05), fibrin split products significantly higher (p < .025) and fibrinopeptide A levels were significantly higher (p < .02) than values measured simultaneously in the control limbs. After pre-treatment with sodium heparin, 30 units/kg, there was no change in antithrombin III levels or fibrinogen levels, but fibrin split products in the experimental limbs were significantly elevated (p < .05) when compared to control limbs. In both groups the abnormal levels returned to control levels 5-30 minutes after tourniquet deflation. We conclude that intravascular coagulation and fibrinolysis develop within ischemic subhuman primate limbs during tourniquet ischemia. Pretreatment with heparin prevents the consumption of fibrinogen and antithrombin III but does not prevent the increase in fibrin split products which was observed. It is possible that intravascular coagulation and fibrinolysis contribute to post tourniquet bleeding.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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