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The Combat Application Tourniquet (CAT) has been proven to reduce exsanguination-related mortality in adults. Now, researchers prospectively assessed its ability to occlude blood flow in the extremities of 60 healthy school-aged (6–16 years) volunteers. For each child, a CAT GEN 7 tourniquet was applied midthigh and midbicep, fitted snuggly, and tightened by half turns while pulses were monitored with Doppler ultrasound. A maximum of three turns (1080°) was allowed to avoid participant pain.
The CAT occluded arterial blood flow in all 60 upper extremities, with a maximum of two full turns required. Occlusion was successful in 56 (93%) of the lower extremities. Of the four failures, one was due to pain at 2.5 turns and three were due to conti…