在灌注尸体模型中评估 Solo-T 和 Combat 应用止血带的性能。

Performance Evaluation of the Solo-T and the Combat Application Tourniquet in a Perfused Cadaver Model.

出版信息

J Spec Oper Med. 2022 Sep 19;22(3):49-55. doi: 10.55460/24E1-MJ5S.

Abstract

PURPOSE

We evaluated a 10.2-cm-wide, minimally elastic, adhesive wrap-based tourniquet (Solo-T or ST) alongside a 3.8-cm-wide windlass-based tourniquet (Combat Application Tourniquet Generation 7, or CAT) to determine if the tension wrap-tightened ST could deliver hemorrhage control equivalent to the windlass-tightened CAT.

METHODS

A cadaver model was used to simulate lower-thigh femoral arterial hemorrhage at "normal" (146 ± 5mmHg) and "elevated" (471 ± 3mmHg) perfusion pressures (mean ± standard error). Three study participants used the ST and CAT to control hemorrhage during 48 timed trials. Arterial occlusion was established by Doppler ultrasound and tourniquet performance was quantified by under-tourniquet pressure cuffs.

RESULTS

Participants achieved 100% (24/24) occlusion success rates and reported similar ease of use for both tourniquets. Occlusion and application times (mean ± standard error) were similar (p > .05) for the ST and CAT under "normal" (occlusion, ST: 25 ± 2 seconds, CAT: 22 ± 2 seconds; application, ST: 27 ± 2 seconds, CAT: 26 ± 2 seconds) and "elevated" (occlusion, ST: 24 ± 7 seconds, CAT: 24 ± 7 seconds; application, ST: 25 ± 7 seconds, CAT: 25 ± 7 seconds) perfusion alike. The ST mean completion pressures (mean ± standard error) were > 40% lower than the CAT under both "normal" perfusion (ST: 110 ± 20mmHg; CAT: 210 ± 30mmHg; p = 0.009) and "elevated" perfusion (ST: 190 ± 50mmHg; CAT: 340 ± 30mmHg; p = 0.03).

CONCLUSION

The adhesive wrap-based ST tourniquet delivered equivalent hemorrhage control performance at significantly lower completion pressures than the CAT.

摘要

目的

我们评估了一种 10.2 厘米宽、弹性极小、基于粘性绷带的止血带（Solo-T 或 ST）和一种 3.8 厘米宽的绞盘式止血带（第七代军用战斗应用止血带，或 CAT），以确定张力绷带拉紧的 ST 是否可以提供与绞盘拉紧的 CAT 相当的出血控制效果。

方法

使用尸体模型模拟“正常”（146±5mmHg）和“升高”（471±3mmHg）灌注压下的大腿股动脉出血。三名研究参与者在 48 次定时试验中使用 ST 和 CAT 来控制出血。通过多普勒超声确定动脉闭塞，通过止血带下的压力袖带量化止血带性能。

结果

参与者实现了 100%（24/24）的闭塞成功率，并且对两种止血带的易用性评价相似。在“正常”（闭塞，ST：25±2 秒，CAT：22±2 秒；应用，ST：27±2 秒，CAT：26±2 秒）和“升高”（闭塞，ST：24±7 秒，CAT：24±7 秒；应用，ST：25±7 秒，CAT：25±7 秒）灌注条件下，ST 和 CAT 的闭塞和应用时间（平均值±标准误差）相似（p>0.05）。在两种灌注条件下，ST 的平均完成压力（平均值±标准误差）均比 CAT 低>40%（ST：110±20mmHg；CAT：210±30mmHg；p=0.009）和“升高”（ST：190±50mmHg；CAT：340±30mmHg；p=0.03）。