Category | Units | ACB +IPACK (n=60) | ACB+sham block (n=59) | P value |
Age (years) | Mean (SD) | 67.7 (7.8) | 65.6 (8.2) | 0.12 |
BMI | Mean (SD) | 31.9 (6.4) | 31.3 (7.0) | 0.60 |
Gender, female | % (n) | 57% (34) | 60% (35) | 0.08 |
Anesthesia type | 0.96 | |||
General | % (n) | 25% (15) | 25% (15) | |
Spinal | % (n) | 75% (45) | 75% (44) | |
ASA status | 0.57 | |||
1 | % (n) | 1.5% (1) | 0% (0) | |
2 | % (n) | 50.0% (30) | 59% (35) | |
3 | % (n) | 48.5% (29) | 41% (24) | |
Race | 0.30 | |||
White | % (n) | 75% (45) | 64.5% (38) | |
African American | % (n) | 23.5% (14) | 34% (20) | |
Other | % (n) | 1.5% (1) | 1.5% (1) | |
Surgery time (min) | Mean (SD) | 74 (22) | 76 (24) | 0.55 |
PACU time (min) | Mean (SD) | 220 (167) | 215 (166) | 0.83 |
ACB, adductor canal block; ASA, American Society of Anesthesiologists; BMI, body mass index; IPACK, interspace between the popliteal artery and the capsule of the posterior knee.