PMID: 25770796Mar 17, 2015Paper

Laboratory testing of emergency tourniquets exposed to prolonged heat

Journal of Special Operations Medicine : a Peer Reviewed Journal for SOF Medical Professionals
John P DavinsonMichael A Dubick

Abstract

Environmental exposure of tourniquets has been associated with component damage rates, but the specific type of environmental exposure, such as heat, is unknown. Emergency-tourniquet damage has been associated with malfunction and loss of hemorrhage control, which may risk loss of life during first aid. The purposes of the study are to determine the damage rate of tourniquets exposed to heat and to compare the rate to that of controls. Three tourniquet models (Combat Application Tourniquet(®); SOF(®) Tactical Tourniquet; Ratcheting Medical Tourniquet(®)) were tested using a manikin (HapMed Leg Tourniquet Trainer; www.chisystems.com) that simulates extremity hemorrhage. The study group of 15 tourniquets (five devices per model, three models) was exposed to heat (oven at 54.4° C [130° F] for 91 days), and 15 tourniquets similarly constituted the control group (unexposed to heat). Damage, hemorrhage control, distal pulse stoppage, time to effectiveness, pressure (mmHg), and blood loss volumes were measured. Three tourniquets in both groups had damage not associated with heat exposure (p = 1). Heat exposure was not associated with change in effectiveness rates (p = .32); this lack of association applied to both hemorrhage control a...Continue Reading

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