The association of timing of coronary artery bypass grafting for non-ST-elevation myocardial infarction and clinical outcomes in the contemporary United States.

BACKGROUND: In contrast to the timing of coronary angiography and percutaneous coronary intervention, the optimal timing of coronary artery bypass grafting (CABG) in non-ST-elevation myocardial infarction (NSTEMI) has not been determined. Therefore, we compared in-hospital outcomes according to different time intervals to CABG surgery in a contemporary NSTEMI population in the USA. METHODS: We identified all NSTEMI hospitalizations from 2016 to 2020 where revascularization was performed with CABG. We excluded NSTEMI with high-risk features using prespecified criteria. CABG was stratified into ≤24 h, 24-72 h, 72-120 h, and >120 h from admission. Outcomes of interest included in-hospital mortality, perioperative complications, length of stay (LOS), and hospital cost. RESULTS: A total of 147 170 NSTEMI hospitalizations where CABG was performed were assessed. A greater percentage of females, Blacks, and Hispanics experienced delays to CABG surgery. No difference in in-hospital mortality was observed, but CABG at 72-120 h and at >120 h was associated with higher odds of non-home discharge and acute kidney injury compared with CABG at ≤24 h from admission. In addition to these differences, CABG at >120 h was associated with higher odds of gastrointestinal hemorrhage and need for blood transfusion. All 3 groups with CABG delayed >24 h had longer LOS and hospital-associated costs compared with hospitalizations where CABG was performed at ≤24 h. CONCLUSION: CABG delays in patients with NSTEMI are more frequently experienced by women and minority populations and are associated with an increased burden of complications and healthcare cost.

Impact of Hospital Readmissions Reduction Program Policy on 30-Day and 90-Day Readmissions in Patients With Acute Myocardial Infarction: A 10-Year Trend From the National Readmissions Database.

Hospital readmissions following acute myocardial infarction (AMI) pose a significant economic burden on health care utilization. The hospital readmission reduction program (HRRP) enacted in 2012 focused on reducing readmissions by penalizing Centers for Medicare & Medicaid Services (CMS) Medicare hospitals. We aim to assess the trend of readmissions after AMI hospitalization between 2010 and 2019 and assess the impact of HRRP. The National Readmission Database was queried to identify AMI hospitalizations between 2010 and 2019. In the primary analysis, trends of 30-day and 90-day all-cause and AMI specific readmissions were assessed from 2010 to 2019. In the secondary analysis, trend of readmission means length of stay and mean adjusted total cost were calculated. There were a total of 592,015 30-day readmissions and 787,008 90-day readmissions after an index hospitalization for AMI between 2010 and 2019. The rates of 30-day and 90-day all-cause readmissions decreased significantly from 12.8% to 11.6%, (P = 0.0001) and 20.6 to 18.8, (P = 0.0001) respectively in the decade under study. With regards to HRRP policy intervals, the pre-HRRP period from 2010 to 2012 showed a downward trend in all-cause readmission (12.8% to 11.6%) and similarly a downward trend was also seen in the post HRRP period (2013-2015:11.0%-8.2%, 2016-2019-12.3-11.7%). Secondary analysis showed a trend towards increase in mean length of stay (4.54-4.96 days, P = 0.0001) and adjusted total cost ($13,449-$16,938) in 30-day all-cause readmission for AMI in the decade under review. In our National Readmission Database-based analysis of patients readmitted to hospitals within 30-days and 90-days after AMI, the rate of all-cause readmissions down trended from 2010 to 2019.