Regional Variation in Mortality, Major Complications, and Cost After Left Ventricular Assist Device Implantation in the United States (2009 to 2014)

Abstract

The objective of this analysis was to provide evidence on regional differences in outcomes, cost and disposition among patients who undergo continuous-flow LVAD implantation. Using data from the National Inpatient Sample and US Census Bureau, annual national estimates in utilization, in-hospital mortality, major complications, cost, length of stay (LOS), and disposition were estimated for years 2009 to 2014. Main outcomes and complications were identified using patient safety indicators and International Classification of Diseases-Ninth Revision, Clinical Modification codes. We analyzed a total of 3,572 (weighted = 17,552) patients with LVAD implants among the 4 Census regions of the United States. The patient population in the Southern region was younger with higher percentage of African-Americans. Overall, the comorbidity burden was higher in the Midwest. The risk-adjusted rate of in-hospital mortality did not differ significantly among the geographical regions (p = 0.8). With the exception of cardiac tamponade rates which were higher in the Northeast and West, all other post-operative complications did not differ between regions. LOS was higher in the Northeast (median 32 days) and lower in the South (median 27 days). The cost analysis suggested higher median cost in the West (median $246,292) and lowest in the Northeast region (median $192,604). Finally, higher percentages of patients were transferred to an extended care facility in the Northeast, whereas more patients were discharged to home in the Western region. We identified region disparities in LOS, cost and disposition but not in-hospital mortality and complications, among patients who underwent LVAD implantation between 2009 and 2014.