Table 1 Preoperative clinical data of patients involved in our study.
From: Therapeutic experience and key techniques of tubeless percutaneous nephrolithotomy
Variable | PCNL | Tubeless PCNL | P value |
|---|---|---|---|
No. of patients | 20 | 20 | - |
Male: Female | 12:8 | 14:6 | 0.704 |
Mean age (years) | 54.5 ± 13.1 | 49.3 ± 15.3 | 0.264 |
Mean BMI | 24.4 ± 3.4 | 25.1 ± 4.0 | 0.547 |
Right side/left side | 1.000 | ||
Right | 10 | 10 | |
Left | 10 | 10 | |
Stones | 0.333 | ||
Renal pelvis | 2 | 3 | |
Renal calyx | 2 | 1 | |
Renal pelvis & renal calyx | 6 | 5 | |
Upper ureter | 6 | 5 | |
Upper ureter & renal pelvis | 4 | 6 | |
Hydronephrosis (cm) | 0.515 | ||
No (d < 0.5) | 4 | 5 | |
Mild (0.5 ≤ d ≤ 1) | 4 | 2 | |
Moderate (1 < d ≤ 2) | 2 | 5 | |
Severe (d > 2) | 10 | 8 | |
Urine culture | 1.000 | ||
Negative | 18 | 18 | |
Positive | 2 | 2 | |
Stone size (mm) | 19.7 ± 7.4 | 17.6 ± 6.0 | 0.347 |
Puncture site | 1.000 | ||
Upper calyx | 0 | 0 | |
Middle calyx | 18 | 19 | |
Subrenal calyx | 2 | 1 | |
Anesthesia | 0.480 | ||
General | 13 | 16 | |
Regional | 7 | 4 |
