Table 1 Patient characteristics for patients undergoing ureteroscopy for urinary stones in MUSIC ROCKS stratified by post-operative course
Risk factor | Infection-related hospitalization (n = 43) | Non-hospitalized (n = 1737) | P value |
|---|---|---|---|
Pre-operative characteristics | |||
Public insurance | 25 (58.1%) | 669 (39.7%) | 0.01 |
Mean age (SD) | 60.1 (15.8) | 54.4 (15.5) | 0.02 |
Male gender | 19 (44.2%) | 867 (50.1%) | 0.44 |
BMI > 30 | 24 (58.5%) | 788 (46.8%) | 0.13 |
CCI ≥ 1 | 26 (60.5%) | 495 (28.5%) | < 0.01 |
CCI ≥ 2 | 14 (32.6%) | 241 (13.9%) | < 0.01 |
Presence of hydronephrosis on pre-operative imaging | 27 (67.5%) | 1048 (66.7%) | 0.92 |
Largest stone size (mm), mean (SD) | 10.1 (6.5) | 7.8 (5.4) | < 0.01 |
Solitary kidney | 2 (4.7%) | 25 (1.5%) | 0.13 |
Horseshoe kidney | 1 (2.3%) | 6 (0.4%) | 0.16 |
History of recurrent UTI | 9 (20.9%) | 88 (5.1%) | < 0.01 |
Urinary diversion | 2 (4.7%) | 7 (0.4%) | 0.02 |
Spinal cord injury | 2 (4.7%) | 3 (0.2%) | < 0.01 |
Anti-platelet therapy | 13 (30.2%) | 345 (20.4%) | 0.12 |
Pre-operative urinalysis/urine culture not performed | 9 (20.9%) | 355 (20.5%) | 0.95 |
Positive pre-operative urinalysis/urine culture | 12 (27.9%) | 266 (15.4%) | 0.08 |
Positive pre-operative urinalysis/urine culture treated | 0 (0%) | 59 (22.2%) | 0.07 |
Urgent/emergent surgery | 1 (2.3%) | 146 (8.4%) | 0.15 |
Peri-operative antibiotic use | 38 (95%) | 1513 (96.9%) | 0.49 |
Alpha-blocker therapy prior to URS | 11 (26.2%) | 755 (45.1%) | 0.01 |
Pre-stenting (ureteral stent in place) | 20 (46.5%) | 649 (37.5%) | 0.23 |
Stone location | |||
Renal | 17 (45.9%) | 502 (31.0%) | 0.07 |
Ureter | 14 (37.8%) | 906 (56.0%) | |
Both | 6 (16.2%) | 211 (13.0%) | |
Intra-operative characteristics | |||
Intra-operative complication | 3 (7.0%) | 33 (1.9%) | < 0.01 |
Complication: bleeding | 2 (4.7%) | 14 (0.8) | |
Complication: perforation | 0 (0.0%) | 4 (0.2%) | |
Complication: other | 1 (2.3%) | 15 (0.9%) | |
Ureteral dilation | 6 (13.9%) | 340 (19.7%) | 0.44 |
Ureteral access sheath use | 18 (41.9%) | 626 (36.6%) | 0.49 |
Lithotripsy with fragments left in-situ | 30 (69.8%) | 716 (42.3%) | < 0.01 |
Stenting during URS | 31 (72.1%) | 1248 (72.1%) | 0.99 |
Post-operative characteristics | |||
Discharged with antibiotics | 15 (36.6%) | 638 (39.2%) | 0.74 |
Discharged with antibiotics and stent placed | 9 (20.9%) | 509 (29.3%) | 0.23 |
Discharged with alpha-blocker | 27 (65.8%) | 911 (55.9%) | 0.21 |
Stone free rate | 19 (57.6%) | 579 (77.5%) | < 0.01 |