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Michelle DuGuay Landers, MBA, BSN, RN

Breakaway Media, LLC

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Journal of Special Operations Medicine (JSOM)

Lt Col, USAF/NC (Ret)

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ABSTRACT

Background: We investigated emergency-use limb tourniquet design features effects on application processes (this paper) and times to complete those processes (companion paper). Methods: Sixty-four appliers watched training videos and then each applied all eight tourniquets: Combat Application Tourniquet Generation 7 (CAT7), SOF™ Tactical Tourniquet-Wide Generation 3 (SOFTTW3), SOF™ Tactical Tourniquet-Wide Generation 5 (SOFTTW5), Tactical Mechanical Tourniquet (TMT), OMNA Marine Tourniquet (OMT), X8T tourniquet (X8T), Tactical Ratcheting Medical Tourniquet (Tac RMT), and RapidStop™ Tourniquet (RST). Application processes were scored from videos. Results: Thirty-three appliers had no prior tourniquet experience. All 512 applications were placed proximal to the recipient's simulated distal thigh injury. Thirty-one appliers (13 with no experience) had 66 problem-free applications (18 by no experience appliers). Tightening-system mechanical problems were more frequent with windlass rod systems (26 losing hold of the rod, 27 redoing rod turns, and 58 struggling to secure the rod) versus ratchet systems (3 tooth skips and 16 advance failures). Thirty-five appliers (21 with no experience) had 68 applications (45 by no experience appliers) with an audible Doppler pulse when stating "Done"; causes involved premature stopping (53), inadequate strap pull (1 SOFTTW3, 1 RST), strap/redirect understanding problem (1 SOFTTW5, 1 X8T, 4 Tac RMT, 1 RST), tightening-system understanding problem (2 CAT7, 1 SOFTTW3, 1 TMT, 1 RST), and physical inability to secure (1 SOFTTW3). Fifty-three appliers (32 no experience) had 109 applications (64 by no experience appliers) not correctly secured. Six involved strap/redirect understanding problems: 4 Tac RMT, 1 X8T, 1 SOFTTW5; 103 involved improper securing of non-self-securing design features: 47 CAT7 (8 strap, 45 rod), 31 TMT (17 strap, 19 rod), 22 OMT (strap), and 3 SOFTTW3 (rod). Conclusion: Self-securing systems have process advantages. Because most emergent tourniquet recipients require transport, we believe tourniquet security is a critical design aspect. Decisions regarding tourniquet choices may become very different when both occlusion and tourniquet security are considered.

Effects of Tourniquet Features on Application Processes Times

Wall P, Buising CM, White A, Jensen J, Davis J, Renner CH. 23(4). 31 - 42. (Journal Article)

ABSTRACT

Background: We investigated emergency-use limb tourniquet design features effects on application processes (companion paper) and times to complete those processes (this paper). Methods: Sixty-four appliers watched training videos then each applied all eight tourniquets: Combat Application Tour- niquet Generation 7 (CAT7), SOF™ Tactical Tourniquet-Wide Generation 3 (SOFTTW3), SOF™ Tactical Tourniquet-Wide Generation 5 (SOFTTW5), Tactical Mechanical Tourniquet (TMT), OMNA Marine Tourniquet (OMT), X8T-Tourniquet (X8T), Tactical Ratcheting Medical Tourniquet (Tac RMT), and RapidStop Tourniquet (RST). Application processes times were captured from videos. Results: From "Go" to "touch tightening system" was fastest with clips and self-securing redirect buckles and without strap/redirect application process problems (n, median seconds: CAT7 n=23, 26.89; SOFTTW3 n=11, 20.95; SOFTTW5 n=16, 20.53; TMT n=5, 26.61; OMT n=12, 25.94; X8T n=3, 18.44; Tac RMT n=15, 30.59; RST n=7, 22.80). From "touch tightening system" to "last occlusion" was fastest with windlass rod systems when there were no tightening system understanding or mechanical problems (seconds: CAT7 n=48, 4.21; SOFTTW3 n=47, 5.99; SOFTTW5 n=44, 4.65; TMT n=38, 6.21; OMT n=51, 6.22; X8T n=48, 7.59; Tac RMT n=52, 8.44; RST n=40, 8.02). For occluded, tightening system secure applications, from "touch tightening system" to "Done" was fastest with self-securing tightening systems tightening from a tight strap (occluded, secure time in seconds from a tight strap: CAT7 n=17, 14.47; SOFTTW3 n=22, 10.91; SOFTTW5 n=38, 9.19; TMT n=14, 11.42; OMT n=44, 7.01; X8T n=12 9.82; Tac RMT n=20, 6.45; RST n=23, 8.64). Conclusions: Suboptimal processes in- crease application times. Optimal design features for fast, occlusive, secure tourniquet applications are self-securing strap/ redirect systems with an easily identified and easily used clip and self-securing tightening systems.

ABSTRACT

United States Special Operations Forces (SOF) personnel are frequently exposed to explosive blasts in training and combat. However, the effects of repeated blast exposure on the human brain are incompletely understood. Moreover, there is currently no diagnostic test to detect repeated blast brain injury (rBBI). In this "Human Performance Optimization" article, we discuss how the development and implementation of a reliable diagnostic test for rBBI has the potential to promote SOF brain health, combat readiness, and quality of life.

Keywords: blast overpressure; brain injury; Special Operations Forces; SOF; human performance optimization



The JSOM podcast digs deeper into the articles and subjects that matter to our readers. Our podcast hosts, Captains Alex Merkle and Josh Randles, tackle articles from the journal based on merit, interest, and application for operators in the field. THE FALL 23 EPISODE IS HERE!

Current Episode

The Fall 2023 episode of the JSOM podcast is our most recent recording and is now available on our website and wherever you listen to podcasts.

JSOM Guest Medic EditorTechnical Sergeant Derek Fyksen will be reviewing Pain Control and Point-of-Care Ultrasound: An Approach to Rib Fractures for the Austere Provider. TSgt Fyksen is currently an Air Force PJ. He enlisted in the U.S. Marine Corps in 2011 and served three years at 1st Marine Raider Battalion before transferring to the Air Force to pursue becoming a Pararescueman in 2017. After his separation from the Air Force, Derek intends to pursue a joint MD/MPH program.

JSOM Guest Author Interview

Dr. Luc Saint-Jean is affiliated with the 1st Specialized Medical Unit, Versailles, France. He will be reviewing his article, Phosphorus Burn Management with Multimodal Analgesia.

Josh Randles will review Slow Intravenous Infusion of a Novel Damage Control Cocktail Decreases Blood Loss in a Pig Polytrauma Model.

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If your institution is not on the list and you want more information about our institutional access, contact our subscriptions manager, Dr. Scott Graverson.

For over 20 years, the Journal of Special Operations Medicine (JSOM) has brought important, lifesaving information to the Special Operations Forces (SOF) community. And over the years, as our audience and readership has expanded into over 80 countries, physicians, military and tactical medics, and other medical professionals working in unconventional environments rely on the JSOM for breakthrough research at the intersection of operational medicine and tactical casualty care. Our peer-reviewed research and interactive clinical content make the JSOM a must-read for:

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