关键词: 肾盂成形术, 小儿, 肾积水, 肾盂内压力, 肾盂输尿管连接部狭窄

Abstract: 【Abstract】〓Objective〓To investigate the renal pelvic pressure trends after pyeloplasty for children with congenital hydronephrosis. Methods〓Thirty patients who underwent Anderson–Hynes pyeloplasty for ureteropelvic junction obstruction were included in a retrospective analysis. Nephrostomy tubes were placed when the operations were performed. After surgeries, renal pelvic pressure, bladder pressure and urine volume of the hydronephrotic kidneys were measured every day,and lasted for 14 days. Results〓Renal pelvic pressure decreased to the same level of bladder pressure 1 day after operation, while increases temporary 1 week later, and then decreased to a steady level. Urine volume of hydronephrotic kidneys also increased temporary 1 week after operation. Conclusion〓Anastomosis functional obstruction exited within one week after operation. Nephrostomy tube or ureteral tent should be placed for more than 1 week was imperative after operation. They should be removed in 3 weeks.

Key words: Children, Ureteropelvic junction obstruction, Pyeloplasty, Hydronephrosis, Renal pelvic pressure