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Interhospital Variability in Cardiac Rehabilitation Use After Cardiac Surgery Among Medicare Beneficiaries

The Journal of Thoracic and Cardiovascular Surgery(2024)

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摘要
Objective Despite guideline recommendation, cardiac rehabilitation (CR) following cardiac surgery remains underutilized, and the extent of interhospital variability is not well understood. This study evaluated determinants of interhospital variability in CR use and outcomes. Methods This retrospective cohort study included 166,809 Medicare beneficiaries undergoing cardiac surgery who were discharged alive between 07/01/2016 and 12/31/2018. CR participation was identified in outpatient facility claims within a year of discharge. Hospital-level CR rates were tabulated, and multilevel models evaluated the extent to which patient, organizational, and regional factors accounted for interhospital variability. Adjusted 1-year mortality and readmission rates were also calculated for each hospital quartile of CR use. Results Overall, 90,171 (54.1%) participated in at least one CR session within a year of discharge. Interhospital CR rates ranged from 0.0% to 96.8%. Hospital factors that predicted CR use included non-teaching status and lower hospital volume. Before adjusting for patient, organizational, and regional factors, 19.3% of interhospital variability was attributable to the admitting hospital. After accounting for covariates, 12.3% of variation was attributable to the admitting hospital. Patient (0.5%), structural (2.8%), and regional (3.7%) factors accounted for the remaining explained variation. Hospitals in the lowest quartile of CR use had higher adjusted 1-year mortality rates (Q1 = 6.7%, Q4 = 5.2%, p < 0.001) and readmission rates (Q1 = 37.6%, Q4 = 33.9%, p<0.001). Conclusion Identifying best practices among high CR use facilities and barriers to access in low CR use hospitals may reduce interhospital variability in CR use and advance national improvement efforts.
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关键词
Cardiac rehabilitation,cardiac surgery,CABG,SAVR
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