Does the metabolic syndrome or its components affect the outcome of percutaneous nephrolithotomy?

Purpose: Metabolic syndrome is a cluster of cardiovascular disease risk factors. We assessed the impact of these medical disorders on the outcome of percutaneous nephrolithotomy (PCNL).

Patients And Methods: Data from 430 consecutive PCNL procedures were retrospectively reviewed.

Classification of percutaneous nephrolithotomy complications using the modified clavien grading system: looking for a standard.

Objectives: A classification (modified Clavien system) has been proposed to grade perioperative complications. We reviewed our experience with percutaneous nephrolithotomy (PNL), grading the complications according to this new classification.

Methods: A total of 811 PNLs were performed between 2003 and 2006, and charts were retrospectively reviewed focusing on complications observed.

Tubeless percutaneous nephrolithotomy in selected patients: a prospective randomized comparison.

Objectives: To prospectively compare the outcome of standard and tubeless percutaneous nephrolithotomy (PNL) in a selected group of patients with renal stones.

Methods: Patients with simple, isolated renal pelvis or lower pole caliceal stones and no significant hydronephrosis were randomly enrolled to undergo either standard PNL, in which routine nephrostomy tube was placed at the end of operation, or tubeless PNL. Occurrence of intraoperative complications, total operative time exceeding 2 h, indication for additional access or second-look PNL due to residual stones were exclusion criteria.