Efficacy of Lower Tourniquet Pressure During Total Knee Arthroplasty

The Efficacy of Using Lower Tourniquet Pressure During Total Knee Arthroplasty: Comparison With Conventional Tourniquet Pressure Group

This study aims to determine whether the lower tourniquet pressure, which is set by adding 120mmHg (millimeter of mercury) on the systolic blood pressure just before tourniquet inflation, are efficient and safe during total knee arthroplasty, compared with the conventional tourniquet pressure: 150mmHg above the systolic blood pressure before tourniquet inflation.

We will compare the two groups of patients undergoing total knee arthroplasty, which the tourniquet pressure will be set differently: systolic blood pressure plus 120mmHg vs. systolic blood pressure plus 150mmHg, the conventional method, in terms of efficacy and safety.

Inclusion Criteria:

• The patients undergoing total knee arthroplasty

Exclusion Criteria:

• Systolic blood pressure measured at ward > 200mmHg
• Thigh circumference > 78cm
• Anesthesia other than spinal anesthesia
• Simultaneous bilateral total knee arthroplasty
• The patients who disagreed the enrollment of this study