Renal function recovery outcomes and risk factors of obstructive pyonephrosis after endoscopic stone removal / 中华泌尿外科杂志

ABSTRACT

Objective To investigate the renal function recovery outcomes and risk factors of obstructive pyonephrosis after endoscopic stone removal in 24 months.Methods 97 patients suffered pyonephrosis because of obstruction of urinary calculi were followed-up at least 24 months after stone removed by endoscopic procedures.74 patients'stones were removed by one-session procedure,other 23 cases had been drained firstly and accepted endoscopic stone removal afterwards.All patients' renal function(Cr and GFR)were followed-up at least 24 months.Results The stone free rate was 84.5%,76.3% patients had SIRS postoperatively,but no patients were admitted to ICU for severe infection complications,and no mortality occurred in all patients.There was no significant different change of mean serum creatinine and GFR before operation and 24 months follow-up.Age,preoperative GFR and perinephric infection were the risk factors of renal function recovery after endoscopic stone removal.Though atrophy kidney were reported in 1 3 patients in follow-up,only one patients needed kidney resection.Conclusions Endoscopic stone removal of obstructive pyenephrosis is safe,the renal function would be maintained after stone removal. Those who had old age,poor preoperative renal function and infection reaction beyond kidney would not recover.