Prediction of morbidity and mortality after percutaneous nephrolithotomy by using the Charlson Comorbidity Index.

Objectives: To determine whether the Charlson Comorbidity Index (CCI) predicts postoperative medical complications and death in patients treated with percutaneous nephrolithotomy (PCNL).

Methods: A total of 1406 PCNL procedures were performed at 4-stone referral centers between September 2004 and March 2011 were reviewed in this multicenter study. Variables included patient and stone characteristics, preoperative comorbidities, intraoperative data, and postoperative complications, including mortality.

Retrograde intrarenal surgery versus percutaneous nephrolithotomy in the management of lower-pole renal stones with a diameter of 15 to 20 mm.

Purpose: To compare the outcomes of percutaneous nephrolithotomy (PCNL) and retrograde intrarenal surgery (RIRS) for 15 to 20 mm lower-pole (LP) renal calculi by evaluating stone-free rates and associated complications.

Patients And Methods: The records of 79 patients who underwent either PCNL (n=42) or RIRS (n=37) by standard techniques for 15 to 20 mm LP renal calculi were reviewed retrospectively.

Results: In the PCNL group, the stone-free rate was 92.