Page 89 - JSOM Summer 2020

FIGURE 2 Phase 2: Secured strap pressures.

(A) (B)

(C) (D)

On each panel, the y-axis has the same scale and shows pressure exerted with the strap secured over different clothing conditions on thighs
(A–C) and models (D). In panels A–C, dotted lines at 150mmHg indicate the desired secured pressure threshold. 4,12-14 In panel D, the dashed line
separates C-A-T7 pressures from SOFTTW and Tac RMT pressures. Panels show individual triplicate values as medians with bars indicating
the minimum and maximum values or as separate symbols. In A–C, applier single arm pull strength is shown above the x-axis. (A) C-A-T7.
(B) SOFTTW. (C) Tac RMT. (D) Secured pressures on models with C-A-T7, SOFTTW, and Tac RMT with an applied pulling weight of 22.70kg.

Fourteen appliers indicated completed applications on clothing Tac RMT 9.25%, 1.66 to 45.86%; occlusion C-A-T7 8.00%,
as most difficult with 12 specifying Uniform as most difficult 0.10 to 28.43%; SOFTTW 7.01%, 0.84 to 23.80%; Tac RMT
(five indicated the pocket increased difficulty). One indicated 5.16%, 0.15 to 29.19%; SWATT 7.20%, 0.58 to 23.11%;
clothing as most difficult with the SWATT and SOFTTW, but completion C-A-T7 8.00%, 0.67 to 30.49%; SOFTTW
Bare as more difficult with the Tac RMT and C-A-T7. 7.17%, 2.21 to 22.29%; Tac RMT 5.18%, 0.84 to 18.20%;
SWATT 7.83%, 1.77 to 27.09%.
Eleven recipients indicated completed applications on clothing
caused the least discomfort with six specifying Uniform and five As in Phase 2, appliers did not consistently achieve higher or
Scrubs causing the least discomfort. One indicated Bare for least lower secured pressures with any condition (Figure 3B–3D).
discomfort with the SWATT but Uniform for other tourniquets. With 200 of 224 secured pressures > 150mmHg, C-A-T7 se-
cured pressures were generally highest followed by Tac RMT
Triplicate variances on thighs were as follows: secured C-A-T7 (77 of 222) then SOFTTW (16 of 223). Applier strength was
6.72%, 0.68 to 20.95%; SOFTTW 9.09%, 0.37 to 26.69%; not directly related to secured pressures (Figure 3B–3D).

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