Safety and efficacy of tubeless percutaneous renal surgery.

PURPOSE

We challenge the requirement for routine placement of a nephrostomy tube after percutaneous renal surgery, assessing the outcome, safety, and efficacy of tubeless procedures.

PATIENTS AND METHODS

A total of 128 patients underwent tubeless percutaneous renal surgery from May 2001 to May 2004: stone extraction in 120 patients and endopyelotomy +/- stone extraction in 8. The stone sizes ranged from 2 to 7 cm with a mean of 4.1 cm. An external ureteral catheter was used in 120 patients and was removed after 24 hours if a retrograde study revealed no extravasation. An antegrade Double-J stent was used in 8 patients and removed 4 to 6 weeks postoperatively. Among the 128 patients treated by the tubeless technique, we met situations that mandated insertion of a nephrostomy tube in 18.

RESULTS

The stone free-rate was 90.4%. The mean hospital stay was 1.7 days. The incidence of significant intraoperative bleeding was 1.5% and that of significant postoperative hematuria was 4.6%. Postoperative sonography revealed a small perirenal collection (<50 mL) in 10 patients (7.8%) and significant perirenal collections (100-250 mL) in 3 (2.3%). The postoperative retrograde study revealed minor extravasation in 14 patients (12%) and significant extravasation in 3 (2.3%)

CONCLUSION

Tubeless percutaneous renal surgery with an externalized ureteral catheter is a safe procedure that is suitable for any patient who can be rendered stone free with a single procedure regardless of the initial stone burden.