The pressure used in pneumatic tourniquet in upper limb is upto:: (A) Systolic Blood Pressure + 50, (B) Systolic Blood Pressure + 75, (C) Systolic Blood Pressure + 100, (D) None of the above
Answer is B. Pneumatic tourniquet is a narrow rubber bag to be wound around a limb, pressure being applied by pumping air into the inflatable cuff.
A bloodless field is obtained by applying pressure through pneumatic tourniquet for accurate surgery. Usually pressure applied 75 mmHg over systolic blood pressure for not more than 2 hours.