Randomized prospective trial of tubeless versus conventional minimally invasive percutaneous nephrolithotomy.
OBJECTIVE
To evaluate the effectiveness and safety of minimally invasive percutaneous nephrolithotomy (mPCNL) without nephrostomy drainage tubes.


METHODS
We prospectively enrolled 32 eligible patients with kidney stones at our hospital. Patients were randomly assigned to a conventional mPCNL group (ureteric Double-J stents and nephrostomy drainage tubes) or a tubeless mPCNL group (ureteric catheter but no drainage tubes). A single experienced surgeon performed all operations.


RESULTS
At baseline, the two groups had similar age, maximum stone diameter, and gender distribution. There were no significant differences in operation time, presence of postoperative fever, stone clearance, and level of postoperative serum hemoglobin. However, the tubeless mPCNL group had significantly shorter hospital stays (3 vs. 4 days, p = 0.032) and significantly less back pain (5 patients vs. 14 patients, p = 0.003) than the conventional mPCNL group.


CONCLUSIONS
No significant differences were found between conventional and tubeless mPCNL in safety issues and stone clearance rate. However, patients treated with tubeless mPCNL had shorter hospitalization stays and were less likely to experience back pain.
Department of Urology, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou, 215006, Jiangsu, People's Republic of China, lyluyong111@163.com.
Yong
Y
Lu
Ji-Gen
JG
Ping
Xiao-Jun
XJ
Zhao
Lin-Kun
LK
Hu
Jin-Xian
JX
Pu
D000328:Adult; D000368:Aged; D001416:Back Pain / Q000453:epidemiology; D004322:Drainage / Q000295:instrumentation; D005260:Female; D006801:Humans; D015994:Incidence; D007669:Kidney Calculi / Q000601:surgery*; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D019060:Minimally Invasive Surgical Procedures / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods*; D009403:Nephrostomy, Percutaneous / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods*; D011446:Prospective Studies; D015607:Stents; D016896:Treatment Outcome; D062885:Urinary Catheters