Table 4.
Comparison of clinical and perioperative outcomes of robot-assisted surgery
| Study | Country (years) | Sample size | Lower rectum (%) | Pre-operative CCRT (%) | Conversion rate (%) | Estimated blood loss (mL) (median) | Overall complications (%) | Anastomotic leakage (%) | Rate of sphincter preservation (%) | DRM (cm) (median) | Positive CRM (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Present study | Taiwan (2019) | 156 (Stage 0-III) | 62.8 | 71.8 | 0 | 75 (15-1050) | 19.8 | 5.1 | 97.4 | 1.8 | 1.3 |
| 126 (age<70) | 59.5 | 71.4 | 0 | 100 (15-1050) | 20.6 | 5.6 | 97.6 | 1.8 | 1.6 | ||
| 30 (age≥70) | 76.7 | 73.3 | 0 | 50 (15-350) | 16.7 | 3.3 | 96.7 | 1.75 | 0 | ||
| Park et al.[52] | Korea (2015) | 133 (yp Stage I-III) | 24.8 | 11.3 | 0 | 77.6 (0-700) | 19.7 | 4.5 | 100 | 2.75 | 6.8 |
| Ghezzi et al.[53] | Brazil/Italy (2014) | 65 (yp Stage 0-III) | 100 | 72.3 | 1.5 | 0 (0-175) | 41.5 | 7.1 | 86.2 | 2.7 | 0 |
| Cho et al.[54] | Korea (2012) | 278 (yp Stage 0-III) | 24.8 | 32.7 | 0.4 | 179.0 | 25.9 | 10.4 | 100 | 2.0 | 5 |
| Park et al.[55] | Korea (2011) | 52 (yp Stage 0-III) | 60.4 (<7 cm) | 23.1 | 0 | NA | 19.2 | 9.6 | 100 | 2.8 | 1.9 |
| Baek et al.[14] | Korea (2011) | 41 (yp Stage 0-III) | 36.6 (<7 cm) | 80.5 | 7.3 | 200 (20-2000) | 22.0 | 7.3 | 85.4 | 3.6 | 2.4 |
CCRT: Concurrent chemoradiotherapy, CRM: Circumferential resection margin, DRM: Distal resection margin, NA: Not applicable