Table 2 Comparisons of surgical outcomes and postoperative clinical characteristics between two groups.
Variables, mean ± SD or n (%) | Single-access MPCNL group (n = 98) | Multi-access MPCNL group (n = 97) | P value |
|---|---|---|---|
Operative time (min) | 96.7 ± 6.2 | 98.1 ± 5.9 | 0.108 |
Hemoglobin decrease (g/L) | 7.3 ± 4.1 | 13.4 ± 3.5 | < 0.001 |
Postoperative hospital stay (days) | 4.2 ± 0.8 | 5.1 ± 0.5 | < 0.001 |
Initial SFR (postoperative 2nd day) | 87 (88.8) | 72 (74.2) | 0.009 |
Total SFR (postoperative 4th week) | 93 (94.9) | 83 (85.6) | 0.028 |
Complications | |||
Fever | 9 (9.2) | 7 (7.2) | 0.617 |
Low back pain | 7 (7.1) | 18 (18.5) | 0.017 |
Perirenal hematoma | 4 (4.1) | 13 (13.4) | 0.021 |
Renal artery embolization | 0 (0.0) | 4 (4.1) | 0.042 |
Urosepsis | 2 (2.0) | 3 (3.1) | 0.642 |
Stone compositions | |||
Calcium oxalate | 40 (40.8) | 37 (38.1) | 0.703 |
Calcium phosphate | 28 (28.6) | 29 (29.9) | 0.839 |
Struvite or carbonated apatite | 23 (23.5) | 26 (26.8) | 0.591 |
Uric acid or cysteine | 7 (7.1) | 5 (5.2) | 0.564 |
