Table 1 Overall univariate analysis of 12/14F ureteral access sheath (UAS) usage
From: The dilemma of 12/14F ureteral access sheath (UAS) usage: a case control study
Total | UAS | No UAS | p value | Test | ||
|---|---|---|---|---|---|---|
General characteristics | Number of cases | 283 | 98 | 185 | ||
Gender (male/female) | 194/89 | 62/36 | 132/53 | 0.2079 | Chi2 | |
Side (Right/Left) | 124/283 (43.82%) | 43/98 (43.88%) | 81/185 (43.78%) | 1 | Chi2 | |
Median Age (IQR), years | 56 (42; 68) | 54 (38; 68) | 58 (45; 68) | 0.3604 | MWU | |
BMI (IQR) | 27 (25; 31) | 27 (25; 30) | 27 (24; 31) | 0.9827 | MWU | |
ASA > 2* | 54/262 (20.61%) | 23/91 (25.27%) | 31/171 (18.12%) | 0.2297 | Chi2 | |
Recurrent Stone Former | 119/283 (42.05%) | 50/98 (51.02%) | 69/185 (37.30%) | 0.0359 | Chi2 | |
Prestenting | 268/283 (94.70%) | 96/98 (97.96%) | 172/185 (92.97%) | 0.1330 | Chi2 | |
Positive preoperative urine culture** | 81/259 (31.27%) | 42/90 (46.67%) | 39/169 (23.08%) | 0.0002 | Chi2 | |
Antibiotic prophylaxis*** | 64/177 (83.12%) | 24/48 (50.00%) | 40/129 (31.01%) | 0.0306 | Chi2 | |
Stone characteristics | Concomitant Ureterolithiasis | 82/283 (28.96%) | 28/98 (28.57%) | 54/185 (29.19%) | 1 | Chi2 |
Lower Pole Kidney Stone | 213/283 (75.27%) | 82/98 (83.67%) | 131/185 (70.81%) | 0.0250 | Chi2 | |
Median Lower Pole Kidney Stone Diameter (IQR), mm | 6 (4; 8) | 6 (4; 9) | 5 (5; 8) | 0.4678 | MWU | |
Median Kidney Stone Max. Diameter (IQR), mm | 6 (5; 9) | 7 (5; 10) | 6 (4; 9) | 0.0420 | MWU | |
Multiple Kidney Stones (≥ 2) | 147/283 (51.94%) | 71/98 (72.45%) | 76/185 (41.08%) | < 0.0001 | Chi2 | |
Median HU (IQR) | 900 (60; 1034) | 900 (550; 1000) | 900 (600; 1036) | 0.3566 | MWU | |
Operative characteristics | Median IPA (SD), degrees | 54 (42; 64) | 52 (40; 60) | 56 (43; 66) | 0.0497 | MWU |
Median IPA – preoperative imaging (IQR), degrees | 51 (40; 64) | 44 (37; 60) | 52 (41; 66) | 0.0661 | MWU | |
Safety Wire**** | 220/274 (80.59%) | 73/95 (76.84%) | 147/178 (82.58%) | 0.3261 | Chi2 | |
Preceding semirigid URS | 198/283 (69.96%) | 63/98 (64.29%) | 135/185 (72.97%) | 0.1674 | Chi2 | |
Stone Extraction with fURS | 263/283 (92.93%) | 94/98 (95.92%) | 169/185 (91.35%) | 0.2370 | Chi2 | |
Postoperative Stenting | 271/283 (95.76%) | 98/98 (100.00%) | 173/185 (93.51%) | 0.0234 | Chi2 | |
Median Fluoroscopy Time**** (IQR), s | 72 (44; 120) | 94 (67; 142) | 61 (33; 100) | < 0.0001 | MWU | |
Median Operation Time (IQR), min | 77 (51; 105) | 99 (76; 121) | 66 (46; 91) | < 0.0001 | MWU | |
Laser in Calyceal System | 170/283 (60.07%) | 63/98 (64.29%) | 107/185 (57.84%) | 0.2920 | Chi2 | |
Median Total Laser Energy (IQR), kJ | 1.19 (0.39; 2.33) | 1.22 (0.42; 2.41) | 1.16 (0.39; 2.27) | 0.4177 | MWU | |
Outcomes | LOS > 48 h | 42/283 (14.84%) | 22/98 (22.49%) | 20/185 (10.81%) | 0.0145 | Chi2 |
fURS Defect | 29/283 (10.25%) | 13/98 (13.27%) | 16/185 (8.65%) | 0.3113 | Chi2 | |
Clavien Dindo ≥ 2 | 26/283 (9.19%) | 13/98 (13.27%) | 13/185 (7.03%) | 0.1304 | Chi2 | |
Postoperative SIRS | 21/185 (11.35%) | 13/98 (13.27%) | 8/185 (4.32%) | 0.0127 | Chi2 | |
Stone-free status | 205/283 (72.44%) | 59/98 (60.20%) | 146/185 (78.92%) | 0.0013 | Chi2 |