Table 1. Characteristics of Patients and Stones and Operation Outcomes.
BMI: body mass index, eGFR: estimated glomerular filtration rate.
| Parameters | n=126 |
| Age (year) | 46.19 ± 13.55 |
| Gender (n,%) | |
| Male | 90 (71.4%) |
| Female | 36 (28.6%) |
| Comorbidity (n,%) | |
| Hypertension | 1 (0.8%) |
| Diabetes mellitus | 1 (0.8%) |
| Coronary artery disease | 7 (5.6%) |
| Other | 1 (0.8%) |
| Obstruction (+/-) (n,%) | 102 (81.0%)/24 (19.0%) |
| Hydronephrosis (n,%) | |
| No | 24 (19.0%) |
| Grade 1 | 41 (32.5%) |
| Grade 2 | 53 (42.1%) |
| Grade 3 | 7 (5.6%) |
| Grade 4 | 1 (0.8%) |
| Stone localization (n,%) | |
| Proximal ureter | 49 (38.9%) |
| Mid-ureter | 31 (24.6%) |
| Distal ureter | 46 (36.5%) |
| Number of stones | 1.11 ± 0.42 |
| Stone volume (mm3) | 316.44 ± 277.32 |
| Operation time (minute) | 48.56 ± 23.98 |
| Fluoroscopy time (second) | 12.47 ± 22.34 |
| Hospitalization (day) | 1.67 ± 2.32 |
| Stone-free (%) | 93.7% |
| Complication (n,%) | |
| Grade I | 9 (7.1%) |
| Grade II | 3 (2.4%) |
| Grade III | 1 (0.8%) |
| Grade IV | 0 (0%) |
| Grade V | 0 (0%) |
| Mean preoperative eGFR (mL/min/1.73 m2) | 82.28 ± 25.20 |
| Mean postoperative first Day eGFR (mL/min/1.73 m2) | 90.92 ± 22.97 |
| Mean postoperative third Month eGFR (mL/min/1.73 m2) | 94.54 ± 21.95 |