Table 2. Comparison Between Perioperative Outcomes of R-RH/ERH vs L-RH/ERH.
| Characteristic | No. (%) | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Unmatched cohort (n = 989) | 1:1 Propensity score matching (nearest neighbor matching; n = 440) | 1:1 Propensity score matching (optimal matching; n = 440) | |||||||
| R-RH/ERH (n = 220) | L-RH/ERH (n = 769) | P value | R-RH/ERH (n = 220) | L-RH/ERH (n = 220) | P value | R-RH/ERH (n = 220) | L-RH/ERH (n = 220) | P value | |
| Operating time, median (IQR), min | 315.00 (241.50-461.25) | 345.00 (260.00-431.00) | .70 | 315.00 (241.50-461.25) | 346.50 (260.00-452.00) | .78 | 315.00 (241.50-461.25) | 330.00 (260.00-418.50) | .35 |
| Blood loss, median (IQR), mL | 300.00 (100.00-600.00) | 300.00 (150.00-500.00) | .80 | 300.00 (100.00-600.00) | 300.00 (186.00-500.00) | .69 | 300.00 (100.00-600.00) | 250.00 (150.00-500.00) | .29 |
| Blood loss, mL | |||||||||
| <500 | 143 (65.0) | 513 (70.2) | .15 | 143 (65.0) | 147 (70.3) | .14 | 143 (65.0) | 152 (72.0) | .21 |
| ≥500 | 77 (35.0) | 218 (29.8) | 77 (35.0) | 62 (29.7) | 77 (35.0) | 59 (28.0) | |||
| Intraoperative blood transfusion | 35 (15.9) | 100 (13.0) | .27 | 35 (15.9) | 31 (14.1) | .68 | 35 (15.9) | 31 (14.1) | .69 |
| Pringle maneuver applied | 93 (42.3) | 343 (45.7) | .37 | 93 (42.3) | 106 (49.8) | .16 | 93 (42.3) | 108 (50.5) | .07 |
| Open conversion | 19 (8.6) | 100 (13.0) | .08 | 19 (8.6) | 39 (17.7) | .01 | 19 (8.6) | 35 (15.9) | .03 |
| Postoperative stay, median (IQR), d | 7.00 (5.00-10.00) | 7.00 (6.00-11.00) | .01 | 7.00 (5.00-10.00) | 7.00 (5.50-10.00) | .15 | 7.00 (5.00-10.00) | 7.00 (5.75-10.00) | .048 |
| 30-d Readmission | 12 (5.5) | 42 (5.6) | .91 | 12 (5.5) | 12 (5.7) | >.99 | 12 (5.5) | 13 (6.2) | >.99 |
| Postoperative morbidity | 68 (30.9) | 295 (38.4) | .04 | 68 (30.9) | 70 (31.8) | .91 | 68 (30.9) | 75 (34.1) | .56 |
| Major morbidity (Clavien-Dindo grade >2) | 24 (10.9) | 129 (16.8) | .03 | 24 (10.9) | 33 (15.0) | .24 | 24 (10.9) | 30 (13.6) | .46 |
| Reoperation | 4 (1.8) | 33 (4.3) | .11 | 4 (1.8) | 8 (3.6) | .39 | 4 (1.8) | 5 (2.3) | >.99 |
| Mortality | |||||||||
| In-hospital | 3 (1.4) | 11 (1.4) | >.99 | 3 (1.4) | 0 | .25 | 3 (1.4) | 2 (0.9) | >.99 |
| 30-d | 4 (1.8) | 7 (0.9) | .28 | 4 (1.8) | 0 | .13 | 4 (1.8) | 1 (0.5) | .37 |
| 90-d | 6 (2.7) | 14 (1.8) | .40 | 6 (2.7) | 1 (0.5) | .13 | 6 (2.7) | 2 (0.9) | .29 |
Abbreviations: L-RH/ERH, laparoscopic right hepatectomy/extended right hepatectomy; R-RH/ERH, robotic right hepatectomy/extended right hepatectomy.