tourniquet test

tourniquet test
1. (for capillary fragility) pressure is applied midway between diastole and systole for 5 minutes by a manometer cuff; the cuff is released and petechiae are counted in an area 2.5 cm in diameter, on the inner aspect of the forearm. A number between 10 and 20 is marginal; above 20 is abnormal. Called also capillary fragility t. and Hess capillary t. 2. Matas t. 3. Perthes t.

Medical dictionary. 2011.

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