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Related Experiment Video

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Best Tourniquet Holding and Strap Pulling Technique.

Piper L Wall, Charisse M Buising, Sara Donovan

Journal of Special Operations Medicine : a Peer Reviewed Journal for SOF Medical Professionals

|June 16, 2019

Summary

Achieving adequate pressure with limb tourniquets requires specific techniques. Holding above the buckle and pulling the strap tangentially to the limb maximizes effectiveness, regardless of user strength or experience.

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Area of Science:

Medical Devices
Trauma Care
Biomechanical Engineering

Background:

Proper application of nonelastic limb tourniquets is critical for effective hemorrhage control.
Achieving adequate pre-tightening strap pressure is a key factor in tourniquet efficacy.

Purpose of the Study:

To evaluate the impact of different two-handed techniques on securing tourniquet strap pressure.
To identify optimal hand placement and strap-pulling directions for maximizing tourniquet effectiveness.

Main Methods:

Five different tourniquet models were tested using two-handed application techniques on a thigh-sized ballistic gel cylinder and human thighs.
Appliers were blinded to pressure data, and strap pressure was measured under controlled conditions.

Main Results:

Pulling the strap directly outward (90°) resulted in the lowest secured pressures.
Holding the strap above the buckle and pulling tangentially (0°) to the limb yielded the highest pressures.
Most applications did not reach the maximum achievable pressure for the applier's strength, highlighting technique dependency.

Conclusions:

The optimal tourniquet strap application technique involves holding above the buckle and pulling tangentially to the limb.
User strength and experience do not guarantee sufficient strap pressure without knowledge of applied force.