Does body mass index impact the outcomes of tubeless percutaneous nephrolithotomy?

Journal Article (Journal Article)

OBJECTIVE: To evaluate whether body mass index (BMI) has an impact on the outcomes of tubeless percutaneous nephrolithotomy (PCNL). PATIENTS AND METHODS: We retrospectively reviewed patients who underwent tubeless PCNL at our institution from 2006 to 2011. Specifically, stone-free rates, complications, and hospital length of stay (LOS) were assessed. Patients were divided into four groups based on BMI: <25, 25-29.9, 30-34.9 and ≥35 kg/m(2) . Baseline characteristics and outcomes were compared between BMI groups. Multivariable logistic regressions were used to evaluate the independent contribution of BMI as a predictor of outcomes. RESULTS: We identified 268 patients who fulfilled study requirements. The overall stone-free and complication rates were 52.5% and 19.0%, respectively. Minor and severe complication comprised 10.4% and 8.6%, respectively. Univariate and multivariable analyses showed no association between BMI and stone-free or complication rates. However, patients with a normal BMI had significantly higher transfusion rates (P = 0.005), and were significantly more likely to have a prolonged LOS (≥2 days), when compared with an overweight BMI (P = 0.032) CONCLUSIONS: BMI did not impact the stone-free, or complication rates of tubeless PCNL. Normal BMI was found to be a risk factor for prolonged LOS, which may be due to an increase in clinically significant bleeding in this patient population. Tubeless PCNL appears to be a safe and effective procedure for the treatment of complex renal calculi, independent of BMI.

Full Text

Duke Authors

Cited Authors

  • Kuntz, NJ; Neisius, A; Astroza, GM; Tsivian, M; Iqbal, MW; Youssef, R; Ferrandino, MN; Preminger, GM; Lipkin, ME

Published Date

  • September 2014

Published In

Volume / Issue

  • 114 / 3

Start / End Page

  • 404 - 411

PubMed ID

  • 24712851

Electronic International Standard Serial Number (EISSN)

  • 1464-410X

Digital Object Identifier (DOI)

  • 10.1111/bju.12538


  • eng

Conference Location

  • England