Conventional [SBP + 150] (n = 80) | Lower Pressure [SBP + 120] (n = 80) | P value | |
---|---|---|---|
Age (years) | 71.0 (6.2) | 71.8 (6.8) | 0.424 |
Sex: female | 73 (91%) | 68 (85%) | 0.222 |
Height (cm) | 152.4 (6.3) | 152.8 (7.8) | 0.784 |
Weight (kg) | 63.3 (9.9) | 64.0 (11.1) | 0.646 |
BMI (kg/m2) | 27.1 (3.3) | 27.4 (4.0) | 0.647 |
Thigh circumference (cm) | 47.2 (5.1) | 49.2 (5.5) | 0.145 |
Hypertension | 55 (70%) | 53 (66%) | 0.647 |
Diagnosis | |||
Primary osteoarthritis | 78 (97%) | 76 (94%) | 0.330 |
Secondary osteoarthritis | 0 0%) | 2 (3%) | |
Inflammatory arthritis | 2 (3%) | 3 (3%) | |
Operated side: Right | 35 (44%) | 42 (53%) | 0.268 |
Operation type | |||
Unilateral TKA | 38 (48%) | 28 (35%) | 0.261 |
Staged TKA: 1st | 22 (28%) | 29 (36%) | |
Staged TKA: 2nd | 20 (25%) | 23 (29%) | |
Implant | |||
e-motion PS Pro® | 57 (71%) | 64 (80%) | 0.197 |
Genesis II® | 23 (29%) | 16 (20%) | |
Operation method | |||
Conventional | 63 (79%) | 68 (85%) | 0.305 |
Navigation | 17 (21%) | 12 (15%) | |
Pre-inflation SBP (mmHg) | 105.1 (15.9) | 111.2 (14.8) | 0.012 |
Initial tourniquet pressure (mmHg) | 255.0 (18.1) | 233.9 (15.5) | < 0.001 |
Tourniquet time (min) | 83.1 (9.1) | 82.1 (9.2) | 0.486 |
Operative time (min) | 99.3 (16.0) | 99.5 (15.7) | 0.925 |
Maximum intraoperative SBP (mmHg) | 124.1 (16.8) | 121.4 (15.1) | 0.278 |
Preoperative hemoglobin (g/dL) | 12.4 (1.96) | 12.1 (2.1) | 0.406 |