Table 1 Patients and stone characteristics.
Variables | Variables |
|---|---|
Mean ± SD or no. of patients (%) | |
Patient characteristics | |
No. of patients | 62 |
Age (y) | 57.3 (±13.9) |
Male: female | 38 (61.3%): 24 (38.7%) |
Body mass index (kg/m2) | 26.0 (±4.6) |
Creatinine | |
Preoperative (mg/dl) | 0.9 (±0.3) |
Change within 1 months postoperative (mg/dl) | 0.9 (±0.3) |
Estimated GFR | |
Preoperative (mL/min/1.73 m2) | 83.3 (±20.4) |
Change within 1 months postoperative (mL/min/1.73 m2) | −1.0 (±1.5) |
Hemoglobin | |
Preoperative (mg/dl) | 13.7 (±1.8) |
Immediate postoperative minus preoperative (mg/dl) | −0.9 (±1.5) |
Diabetes/hypertension | 13 (21.0%)/26 (41.9%) |
Stone characteristics | |
Previous ESWL history | 13 (21.0%) |
Previous URS history | 3 (4.8%) |
Presence of hydronephrosis without obstruction | 27 (43.5%) |
Infundibulo-pelvic angle (°) | 53.1 (±18.2) |
Houns-field unit | 761.9 (±348.6) |
Diverticular stone | 1 (1.6%) |
Pre-stenting | 22 (35.5%) |
Stone laterality: Right/Left | 29 (46.8%)/33 (53.2%) |
Radiopaque/radiolucent | 51 (82.3%)/11 (17.7%) |
S-ReSC scores: 1–2/3–4/ ≥ 5 | 49 (79.0%)/9 (14.5%)/4 (6.4%) |
Maximal stone size (mm) | 15.4 (±5.4) |
Total stone volume (mm3) | 1376.2 (±1433.2) |
Number of stones | 2.0 (±16) |
Main stone composition | |
Calcium oxalate monohydrate | 48 (77.4%) |
Uric acid | 11 (17.7%) |
Carbonate apatite | 3 (4.8%) |
