Table 2. Comparison Between CAT and Other Tourniquet Types for Pressure Applied, Time to Application, Estimated Blood Loss, and Understanding of Mechanism.
| Tourniquet Type | Pressure, mean (SD), mm Hg | P Value | Time, mean (SD), sa | P Value | Estimated Blood Loss, mean (SD),b | P Value | Understood Mechanism, No. (%) | P Value |
|---|---|---|---|---|---|---|---|---|
| CAT | 390.0 (108.1) | NA | 36.3 (15.4) | NA | 232.3 (92.5) | NA | 99 (97.1) | NA |
| SOFT-T | 309.6 (158.2) | <.001 | 49.9 (24.3) | <.001 | 287.1 (142.1) | <.001 | 91 (89.9) | .04 |
| SWAT-T | 109.7 (130.1) | <.001 | 68.6 (28.8) | <.001 | 311.4 (182.6) | <.001 | 56 (54.9) | <.001 |
| RATS | 92.4 (113.9) | <.001 | 67.6 (28.0) | <.001 | 363.3 (170.2) | <.001 | 46 (45.1) | <.001 |
| Improvised | 160.9 (166.8) | <.001 | 77.0 (20.9) | <.001 | 552.9 (204.6) | <.001 | 71 (69.6) | <.001 |
Abbreviations: CAT, Combat Application Tourniquet; NA, not applicable; RATS, Rapid Application Tourniquet System; SOFT-T, Special Operations Forces Tactical Tourniquet, SWAT-T, Stretch-Wrap-and-Tuck tourniquet.
a
Time presented only for those cases that took less than the 2-minute cutoff.
b
Estimated blood loss presented only for those cases in which the tourniquet was correctly applied.