The retrospective experience of day-surgery semi tubeless ultra-mini percutaneous nephrolithotomy

To retrospectively assess the experience of day-surgery semi tubeless ultra-mini percutaneous nephrolithotomy (UMP) for the treatment of kidney stones by experienced surgeons.

Clinical data of 358 patients with kidney stones (254 males and 104 females; mean age: 59.60±11.70) who were performed UMP surgery in Shanghai Jiao Tong University School of Medicine affiliated Renji Hospital from June 2015 to December 2018. Patient demographics, operative data, complications, and readmission rates were recorded. Day-surgery UMP was defined as discharge of patients either the same day or within 24 h after surgery. Semi tubeless UMP was defined as no placement of DJ and nephrostomy tube after surgery.

The average size of stones was 14.56±6.24 mm (range, 4-30 mm). There are solitary stones in 192 cases, multiple stones in 142 cases and 29 cases with Staghorn stones. F13 outer sheath was used for all operations; 358 patients completed UMP on the day of admission; 326 (91.06%) patients achieved same-day discharge or received overnight observation prior to discharge, and 32 patients (8.94%) required full admission (longer than 24 h). The readmission rate was 0.56% (2 patients). The postoperative complications within 1 week occurred in 36 (10.06%) patients, including 23, 10, 3 of grades I, II, IIIa complications (Clavien-System). The average operation time was 29.64 min and the hemoglobin drop were 13.42±9.55 g/L. The stone clearance rate was 91.62% (328/358). The semi tubeless rate war 95.25% (341/358).

For day-surgery semi tubeless UMP, experienced surgeons gain excellent patient outcomes in appropriately selected patients. Day-surgery semi tubeless UMP is worth promoting.