Mini-PCNL with a vacuum-assisted access sheath for renal calculi with pyonephrosis in the second stage

OBJECTIVE: To compare the safety and efficacy of mini-PCNL with vacuum-assisted access sheath in the second-stage treatment of renal calculi with obstructive pyonephrosis. MATERIAL AND METHODS: A prospective, randomized clinical study was performed at our hospital from May 2020 to May 2022. Patients with pyogenic drainage fluid who needed percutaneous nephrolithotomy were randomized to the peel-away assisted mini-PCNL group (group A) and the vacuum-assisted mini-PCNL group (group B). Demographic information, clinical features, and perioperative period data were collected. RESULTS: = 0.047). There was no significant difference between the two groups in blood transfusion, HB deficit, PCT after the operation, total hospitalization costs, stone-free rate 30 d after the operation, and length of stay or stay post-operative. And no serious complications after the operation occurred in either group. CONCLUSIONS: Mini-PCNL with vacuum-assisted access sheath is a safe and efficient treatment for patients with calculi-related obstructive pyonephrosis in the second stage.