Clinical efficacy of percutaneous renal biopsy under the guide of B-ultrasound in treatment of children with upper urinary tract calculi

Abstract

Objectives To investigate the clinical efficacy and safety of percutaneous renal biopsy under the guide of B-ultrasound in treatment of children with upper urinary tract calculi. Methods The clinical data of 80 patients with upper urinary tract calculi in 82 cases were retrospectively analyzed. The average age was (33.1±17.3) months, the average size was (1.47±0.43)cm. Left side(34 cases), right side(43 cases), bilateral(2 cases) (no urine, renal dysfunction), 46 cases of single stone, 34 cases of multiple stones, 64 cases of renal pelvis, 5 cases of ureteral calculi, 6 cases of renal calculi combined with ureteral calculi, 4 cases with renal calculi, 1 cases of patients with renal pelvis were found. First, children with upper urinary tract calculi, prone position, B-ultrasound guided puncture target calyx, were indwelled 4-5F ureteral catheter with ureteroscope .During the operation, WOLF 8/9.8F ureteroscope and 16F peel-away were used in ballast lithotripsy. Results 82 cases were treated with operation, 78 cases with stone free at first time, 4 cases of stone free at second time, 4 cases of residual stones were found. Stone-free rate at third day after operation was 95.2%. Operation time was 15 ~ 90 min, average time was (33±21.7)min. HGB decreased (9.8 ± 7.8) g/L, and the change of HCT was (0.0375 ± 0.0367)%. The average hospitalization time was (6±1.6)d, 1 cases with pleural effusion, 15 cases with fever, no serious complications occurred. There was no recurrence of st- ones within 1 month after operation. Conclusions Percutaneous renal biopsy under the guide of B-ultrasound is safe and effective in the treatment of pediatric renal and ureteral calculi. Key words: Urinary Calculi; Ureteroscopes; Punctures