Page 59 - JSOM Fall 2020

FIGURE 4 Secured pressures versus strength correlations.

(A) (B)

(C)

On all panels, data points represent means of the triplicates; the y-axis has secured pressures (mmHg), and the x-axis has each subject’s mean data
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grouped by single arm pull (kg). (A) Thigh down secured pressures versus strength, r = 0.44. (B) Thigh up secured pressures versus strength, r =
0.31. (C) Arm secured pressures versus strength, r = 0.24. Open circles indicate not occluded at secured. Half-filled circles indicate occluded at
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secured in one (the last) of the triplicates. Filled circles indicate occluded at secured in all three of the triplicates.

does not include technique feedback and access to knowledge buckle design, there is every reason to expect adult appli-
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of results (real time pressure information with a specified pres- ers to be able to reach secured pressures ≥150mmHg with
sure threshold to exceed). technique training and real time knowledge of results. Third,
our past experience with directing appliers to achieve secured
Regarding the secured pressure threshold of 150mmHg, we pressures “as high as possible” rather than secured pressures
chose this value for three reasons. First, it is a secured pressure above a specified threshold indicates that not specifying and
threshold that should be reached or exceeded during Combat emphasizing a pressure threshold and providing real time
Application Tourniquet applications as part of achieving an knowledge of results often results in secured pressures that are
optimal application (fast occlusion with low risk of tourni- clearly suboptimal. 20
quet damage and applier windlass rod securing difficulty). 17-20
Second, the OMNA Marine Tourniquet redirect buckle is a During subject training aimed at achieving secured pressures
simple, smooth, round, low-friction redirect. Based on redirect >150mmHg, a few tourniquet application technique issues

OMNA Marine Tourniquet Self-Application | 57