Lower Tourniquet Pressure Study

"The procedural intervention will be inflation of a pneumatic tourniquet to a lower than standard pressure as determined by the patient's SBP in hand and upper extremity surgery. The control will be inflation of a pneumatic tourniquet at a standard pressure of 250 mmHg in hand and upper extremity surgery.~The tourniquet used will be the standard tourniquet used for hand and upper extremity surgery at our institutions - a tourniquet 18 inches in length and 3 inches in width manufactured by Stryker (Kalamazoo, MI) used in conjunction with a protective sleeve matched to the size of the tourniquet cuff which is provided by the manufacturer. Both pieces are supplied in a sterile packaging. No other tourniquets will be used."