How To Do a Tourniquet Test
1. Take the patient's blood pressure and
record it, for example, 100/70.
2. Inflate the cuff to a point midway
between SBP and DBP, and maintain for 5
minutes, (100 + 70) ÷ 2 = 85 mm Hg
3. Reduce and wait 2 minutes.
4. Count petechiae below antecubital fossa.
- A positive test is 10 or more
petechiae per 1 square inch.
_________________