5-Item Modified Frailty Index as a Preoperative Predictor of Morbidity Following Minimally Invasive Partial Nephrectomy.

Objective: To apply the modified frailty index-5 (mFI-5) to those patients undergoing minimally invasive partial nephrectomy (MIPN) to examine the relationship between frailty and postoperative outcomes.

Methods: Using the American College of Surgeons National Surgical Quality Improvement Program (ACS-NSQIP) database, data were retrospectively reviewed between 2012 and 2018 for cases coded for MIPN. The mFI-5 score was defined on a scale of 1 to 5, with each patient receiving one point per each of the following comorbidities: congestive heart failure (CHF), chronic obstructive pulmonary disease (COPD), diabetes mellitus, hypertension that requires medication and functional health status of partial or total dependence prior to surgery.