Table 2.
Operative and post-operative complications and SFR
| UAS size | 9.5/11.5fr | 12/14fr | Total | p-value |
|---|---|---|---|---|
| N | 86 | 79 | 165 | |
| Operative Time (median, minutes) | 39.5 | 61 | 46.5 | 0.002 |
| Intra-operative complications | ||||
| Bleeding | 1 | 0 | 1 | |
| Ureteral perforation | 0 | 0 | 0 | |
| Other | 0 | 0 | 0 | |
| Peri-operative complications | ||||
| Fever | 1 | 5 | 6 | 0.077 |
| Pain requiring IV/IM analgesics | 4 | 6 | 10 | 0.429 |
| Follow-up period (days) (median, IQR) | 112 (88-187) | 125 (82-237) | 115 (82-216) | |
| Post-operative | ||||
| Flank pain (%) | 8 (9.3%) | 7 (8.8%) | 15 (9.0%) | 0.864 |
| Creatinine change (mg/dl, median, IQR) | −0.03 (−0.18-0.03) | 0.00 (−0.09-0.05) | −0.02(−0.12-0.05) | 0.228 |
| UTI (%) | 3 (3.6%) | 4 (5.1%) | 7 (4.3%) | 0.650 |
| Referrals to ER | 10 (11.6%) | 10 (12.7%) | 20 (12.1%) | 0.906 |
| Hydronephrosis (%) | 0 (0%) | 2 (2.5%) | 2 (1.2%) | – |
| New hydronephrosis | 0 (0%) | 0 (0%) | 0 (0%) | – |
| Stone-free-rate (%) | 73.5% | 85.7% | 79.4% | 0.056 |
p-value is for univariate analysis. Statistical significance was defined as p ≤ 0.05 and is shown in bold