Functional and cognitive outcomes after suprapubic catheter placement in nursing home residents: A national cohort study.

Abstract

Long-term functional and cognitive outcomes in nursing home residents after procedures are poorly understood. Our objective was to evaluate these outcomes after suprapubic tube (SPT) placement. We performed a retrospective, cohort study in the nursing home setting. Participants were long-term nursing home residents who underwent SPT placement from 2014 to 2016 in the United States. SPT placements were identified in Medicare Inpatient, Outpatient, and Carrier files using International Classification of Diseases and Current Procedural Terminology codes. Residents were identified through the Minimum Data Set (MDS) 3.0 for Nursing Home Residents. MDS Activities of Daily Living (MDS-ADL) and Brief Interview for Mental Status (BIMS) scores were used to assess function and cognition, respectively. Outcomes of interest were worsening MDS-ADL and BIMS scores at 1year postoperatively, 30-day postoperative complications, and 1-year mortality. Functional and cognitive trajectories were modeled to 1 year postoperatively using mixed-effect spline models. From 2014 to 2016, 9647 residents with a mean age of 80.9 (SD 8.1) years underwent SPT placement. At 1year postoperatively, 37.6% of residents died, while of survivors, 33.7% had worsening MDS-ADL and 36.2% worsened BIMS. Residents had steeper postoperative rates of functional decline compared to relatively stable preoperative trends that never recovered to baseline status. However, robustly characterizing an association between SPT placement and functional decline would require a propensity score matched cohort without SPT placement. Decline in cognitive status was not clearly associated with SPT placement, suggesting either the natural course of a vulnerable population or limitations of BIMS scores. Outcomes important to older adults, such as functional ability and cognitive status, do not show improvement after SPT placement. These findings emphasize that this "minor" procedure should be considered with caution in this population and primarily for palliation.