MP31-11 THE IMPACT OF OBESITY IN PATIENTS UNDERGOING ROBOTIC PARTIAL NEPHRECTOMY

INTRODUCTION AND OBJECTIVES:As the prevalence of obesity dramatically increases worldwide, an increasing proportion of surgical candidates have an elevated Body Mass Index (BMI), with associated metabolic syndrome, diabetes, and hypertension. Yet whether these patients have worse perioperative outcomes is controversial. We examined whether obese patients had worse perioperative and postoperative renal function outcomes following robotic partial nephrectomies (RPN).METHODS:We used a multi-institutional database to identify 1,770 patients with 2 kidneys that underwent RPN from 2008-2015 by six high volume surgeons. The association of BMI with perioperative outcomes and acute kidney injury at discharge (AKI, >25% reduction in eGFR), and change in eGFR per month (Range 3-24 months) post-RPN was evaluated. BMI was analyzed as a continuous and categorical variable using Center for Disease Control (CDC) groups. AKI at discharge was analyzed using multivariable logistic regression models and eGFR over time was ev...