Table 2 Comparison of operative and postoperative results, and complications between the extraperitoneal and transperitoneal approaches
Variables | EP approach | TP approach | p–Value |
|---|---|---|---|
Patients (n) | 190 | 190 | Â |
Operative time (min) | 254.5 ± 42.5 (144–464) | 225.8 ± 44.0 (131–410) | <0.01 |
Robot console time (min) | 180.5 ± 31.7 (98–304) | 175.4 ± 40.9 (98–351) | 0.07 |
Anastomosis time (min) | 30.3 ± 11.7 (7–73) | 28.0 ± 10.0 (8–66) | 0.09 |
Blood loss (mL) | 139.9 ± 118.7 (5–800) | 184.9 ± 195.8 (0–1485) | 0.03 |
Prostate weight (g) | 46.0 ± 13.1 (22–96) | 44.8 ± 16.4 (8–132) | 0.13 |
Indwelling urethral catheter (days) | 5.6 ± 1.7 (4–16) | 7.7 ± 3.7 (4–33) | <0.01 |
Pathological Gleason score (%) | Â | Â | 0.02 |
 2–6 | 24 (12.6) | 21 (11.1) |  |
 7 | 118 (62.1) | 142 (74.7) |  |
 8–10 | 54 (28.4) | 27 (14.2) |  |
Pathological stage (%) | Â | Â | <0.01 |
 pT2 | 121 (63.7) | 153 (80.5) |  |
 pT3 | 69 (36.3) | 37 (19.5) |  |
Positive surgical margin (%) | |||
 pT2 | 13 (10.7) | 30 (19.6) | 0.09 |
 pT3 | 37 (53.6) | 21 (56.8) | 0.76 |
Lymphadenectomy (%) | 63 (33.2) | 71 (37.4) | 0.22 |
Continence (%) | 173 (91.1) | 170 (89.5) | 0.60 |
Complications (%) | |||
 Anastomosis stenosis | 2 (1.1) | 5 (2.6) | 0.20 |
 Blood transfusion | 0 (0.0) | 1 (0.5) | 0.32 |
 Colorectal injury | 0 (0.0) | 2 (1.1) | 0.16 |
 Conversion to open surgery | 0 (0.0) | 1 (0.5) | 0.32 |
 Ileus | 0 (0.0) | 2 (1.1) | 0.16 |
 Indirect inguinal hernia | 2 (1.1) | 14 (7.4) | <0.01 |
 Symptomatic lymphocele | 0 (0.0) | 1 (0.5) | 0.32 |