Table 2.
Primary Outcomes for Patients Undergoing Ureteroscopy and Percutaneous Nephrolithotomy: Univariate Analysis
| Outcome | Ureteroscopy |
Percutaneous nephrolithotomy |
||||
|---|---|---|---|---|---|---|
| HP (n = 26) | AIP (n = 25) | p | HP (n = 15) | AIP (n = 14) | p | |
| Pump setup time (minutes) | 3.7 ± 1.1 | 2.3 ± 1.2 | <0.001a | 9.8 ± 4.0 | 2.2 ± 1.0 | <0.001a |
| Pump maintenance time (minutes) | 2.3 ± 2.3 | 0.6 ± 0.5 | <0.001a | 24.0 ± 29.9 | 2.5 ± 1.6 | <0.001a |
| Total pump time (setup+maintenance; minutes) | 5.9 ± 2.6 | 2.9 ± 1.6 | <0.001a | 33.9 ± 29.6 | 4.6 ± 1.3 | <0.001a |
| Intraoperative irrigation-related concerns | 2.8 ± 2.1 | 1.2 ± 1.8 | <0.001a | 4.0 ± 3.3 | 1.9 ± 1.2 | 0.07 |
| Surgeon satisfaction (1–10)b | 7.9 ± 2.3 | 8.8 ± 2.0 | 0.07 | 7.3 ± 2.7 | 8.9 ± 2.4 | 0.05 |
| Nurse satisfaction (1–10)b | 6.5 ± 2.9 | 9.2 ± 1.3 | <0.001a | 4.4 ± 3.5 | 9.4 ± 1.0 | 0.001a |
| Operative time (minutes) | 69.0 ± 35.1 | 76.2 ± 42.0 | 0.50 | 140.8 ± 81.1 | 131.3 ± 56.9 | 0.90 |
| Irrigation fluid used (L) | 1.8 ± 1.4 | 2.5 ± 1.7 | 0.10 | 22.5 ± 36.7 | 20.5 ± 16.6 | 0.40 |
| Stone-free ratec | ||||||
| No fragments | 8 (29.6%) | 3 (37.5%) | 0.39 | 6 (42.9%) | 6 (42.9%) | 1.0 |
| Fragments ≤4 mm | 8 (29.6%) | 5 (62.5%) | 1.0 | 7 (50.0%) | 11 (78.6%) | 0.24 |
a
Alpha <0.01 considered statistically significant after adjustment with Bonferroni correction, given comparison of five outcome variables.
b
Irrigation satisfaction scoring: 1 = highly dissatisfied to 10 = highly satisfied.
c
Stone-free status based on postoperative computed tomography.