Page 52 - JSOM Fall 2025

FIGURE 3 Cont.
(E) exper no exper (F) exper no exper
# time # time # time # time
1 23.67
42 46.79 6 33.54 48 35.84
4 27.34 1 24.51 38 49.57
39 34.36
11 40.86 8 37.60 7 39.94 41 39.02
35 28.63 60 33.94
51 26.15 59 29.95 25 20.40
Good Good 52 65.40
10 82.03
40 81.81 13 56.69
44 44.12
22 39.66
32 28.76
53 43.55
37 70.23
58 34.94
14 36.97
47 45.40
Bad Bad
54 34.33
16 48.94
49 22.07
63 41.02 0 0 0 0 59 163.93
1 0 0 0 0 3 5 1 1 0 00 0 5 2 1 12 1 14 14 1 of of 3 4 of of 1
101
OMT X8T 20 20 20 20
orientation threading/clip minor understanding major understanding opened hook-&-loop pull technique pull hook-&-loop strap tightness strap security understanding tightening other never occluded occluded at done securing struggle tightening security tourniquet security orientation threading/clip minor understanding major understanding pull technique strap tightness strap security understanding tightening other never occluded occlud
strap/redirect tightening tightening strap/redirect tightening tightening
system system system system system system
(G) exper no exper (H) exper no exper
# time # time # time # time
7 41.71 7 58.31
54 37.70 8 43.40 2 37.35 29 22.11
49 40.91 16 37.35
10 57.22 48 33.32
45 31.91
25 30.08 38 41.35
Good 45 36.24 Good 61 29.89
29 44.14
37 38.98
35 36.27
11 91.22 41 38.85 42 68.57
19 43.79 60 38.37
20 79.91 59 37.85
36 41.06 36 24.17
58 59.96 53 71.46
Bad Bad
52 146.05
10 2 0 0 0 44 170.93
5
7
0 3 2 of of 3 3 of of 2 0 6 10 0 7 11 0 1 4 2 20 0 0
of
7
Tac RMT 15 15 15 15 15 RST
orientation threading/clip minor understanding major understanding pull technique strap tightness strap security understanding tightening other never occluded occluded at done securing struggle tightening security tourniquet security orientation threading/clip minor understanding major understanding pull technique strap tightness strap security understanding tightening other never occluded occluded at done securing struggle tighten
strap/redirect tightening tightening strap/redirect tightening tightening
system system system system system system
Median times from “touch tightening system” to “Done” were consisted of incorrect redirect rethreading followed by recog-
slowest for first applications by no-experience appliers and nition and correct rethreading.
fastest for first applications by experienced appliers (median
times: first no-experience 13.04 seconds, last experienced In first and last applications, most strap/redirect-understanding
11.59 seconds, last no-experience 10.17 seconds, first expe- problems occurred with the 33 no-experience appliers (51 of
rienced 7.70 seconds; p=.236 first no-experience versus last 99 no-experience applications versus 2 of 30 experienced ap-
no-experience, p=.486 first no-experience versus first experi- plications, p<.0001, Figure 5A). In no-experience applications,
enced, p>.994 first experienced versus last experienced, and 20 occurred during first applications (20 of 33 no- experience
last experienced versus last no-experience). first versus 2 of 10 experienced first applications, p=.034;
20 of 33 no-experience first versus 31 of 66 no- experience
Strap/Redirect-Understanding Problems last applications, p=.286). Of no-experience strap/redirect-
In first and last applications by experienced appliers, strap/ understanding problems, three first applications and one last
redirect-understanding problems only occurred with two, application resulted in event failures regarding strap security,
both OMT-only experienced (#7 and #11), and occurred only precluding the possibility of successful tightening-system use
during first applications (2 of 10 experienced first applications (one first Tac RMT, one first SOFTTW5, one first X8T, and
versus 0 of 20 experienced last applications, p=.103). The X8T one last Tac RMT application).
minor understanding problem (#7, Figure 3F) consisted of
brief confusion determining where to grasp and pull the strap. Regarding highly similar, shared-strap/redirect-design features
The Tac RMT major understanding problem (#11, Figure 3G) and strap/redirect-understanding problems in any application

50 | JSOM Volume 25, Edition 3 / Fall 2025