Introduction: To determine whether body mass index (BMI) can influence the outcomes of percutaneous nephrolithotripsy (PCNL) in the prone and the supine position or cannot.
Materials and Methods: We have reviewed the files of 110 patients who underwent the prone and the complete supine PCNL (csPCNL) between September 2007 and December 2008 in the 3 categories: BMI < 25, 25 > BMI < 30, and BMI > 30.
Results: The demographic data and surgical outcomes of the patients were evaluated. There was no statistically significant difference between groups, except the stone-free rate in the BMI < 25 group, which was higher in the prone position. Moreover, in groups with higher BMIs, the anesthesia time was increased. The overall stone-free rate was 78 and 73.3% in the prone and supine positions, respectively (p = 0.57). No statistically significant differences were found, except a higher incidence of fever in the prone approach and a significantly shorter anesthesia time in the complete supine position.
Conclusion: The outcomes of PCNL in both positions were not dependent on the patient‘s BMI. Also, the anesthesia time was prolonged in patients with a higher BMI. This study showed that the prone and the supine PCNL in obese and morbidly obese patients were safe and effective.
Siavash Falahatkar, Marzieh Akbarpour, Ahmad Enshaei, Samaneh Esmaeili, Amin Afsharimoghaddam
Date Received: January 10, 2012
Accepted on: February 14, 2012
KEYWORDS: Complete supine PCNL, prone PCNL, BMI, stone-free rate, fever, total ultrasonic guidance
CORRESPONDENCE: Siavash Falahatkar, Professor of Urology, Urology Research Center, Razi Hospital, Sardare Jangal Street, Rasht, Gilan Province, Iran ( )
CITATION: UroToday Int J. 2012 Apr;5(2):art 12.
doi: http://dx.doi.org/10.3834/uij.1944-5784.2012.04.12