Robotic partial nephrectomy for renal tumours in obese patients: Perioperative outcomes in a multi-institutional analysis

Authors

  • Newaj Abdullah Vattikuti Urology Institute, Henry Ford Health System
  • Deepansh Dalela Vattikuti Urology Institute, Henry Ford Health System
  • Ravi Barod Vattikuti Urology Institute, Henry Ford Health System
  • Jeff Larson Division of Urology, Washington University in St. Louis
  • Michael Johnson James Buchanan Brady Urological Institute, John Hopkins University
  • Alon Mass Department of Urology, New York University
  • Homayoun Zargar Glickman Urological and Kidney Institute, Cleveland Clinic Foundation
  • Mohamad Allaf James Buchanan Brady Urological Institute, John Hopkins University
  • Sam Bhayani Division of Urology, Washington University in St. Louis
  • Michael Stifelman Department of Urology, New York University
  • Jihad Kaouk Glickman Urological and Kidney Institute, Cleveland Clinic Foundation
  • Craig Rogers Vattikuti Urology Institute, Henry Ford Health System

DOI:

https://doi.org/10.5489/cuaj.3197

Abstract

Introduction: We sought to evaluate the association of obesity with surgical outcomes of robotic partial nephrectomy (RPN) using a large, multicentre database. 

Methods: We identified 1836 patients who underwent RPN from five academic centres from 2006-2014.  A total of 806 patients were obese (body mass index [BMI] ≥30 kg/m2). Patient characteristics and outcomes were compared between obese and non-obese patients. Multivariable analysis was used to assess the association of obesity on RPN outcomes.

Results: A total of 806 (44%) patients were obese with median BMI of 33.8kg/m2. Compared to non-obese patients, obese patients had greater median tumour size (2.9 vs. 2.5 cm, p<0.001), mean RENAL nephrometry score (7.3 vs. 7.1, p = 0.04), median operating time (176 vs. 165 min, p=0.002), and median estimated blood loss (EBL, 150 vs. 100 ml, p=0.002), but no difference in complications. Obesity was not an independent predictor of operative time or EBL on regression analysis. Among obese patients, males had a greater EBL (150 vs. 100 ml, p<0.001), operative time (180 vs. 166 min, p<0.001) and warm ischemia time (WIT, 20 vs. 18, p=0.001) and male sex was an independent predictor of these outcomes on regression analysis.

Conclusion: In this large, multicentre study on RPN, obesity was not associated with increased complications and was not an independent predictor of operating time or blood loss.  However, in obese patients, male gender was an independent predictor of greater EBL, operative time, and WIT.  Our results indicate that obesity alone should not preclude consideration for RPN.

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Published

2015-12-14

How to Cite

Abdullah, N., Dalela, D., Barod, R., Larson, J., Johnson, M., Mass, A., Zargar, H., Allaf, M., Bhayani, S., Stifelman, M., Kaouk, J., & Rogers, C. (2015). Robotic partial nephrectomy for renal tumours in obese patients: Perioperative outcomes in a multi-institutional analysis. Canadian Urological Association Journal, 9(11-12), E859–62. https://doi.org/10.5489/cuaj.3197

Issue

Vol. 9 No. 11-12 (2015): CUAJ December

Section

Original Research

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