Abstract P350: Completion of Cardiac Rehabilitation Reduces Hospital Admission Rates in Long Term Follow-up
Introduction: Cardiac rehabilitation (CR) improves exercise tolerance, quality of life, and mortality among patients with heart disease in short term follow-up. Less is known regarding the sustained benefits attributable to CR after 1 year.
Hypothesis: CR attendees have decreased morbidity, represented by lower admission rates.
Methods: A database of patients referred to CR between May 2001 and January 2011 was constructed. Data on gender, race, age, and attendance was collected. Completion of CR was designated as 36 sessions. Participants attending 1 to 35 sessions were excluded. All cause hospitalization was recorded from the date of primary cardiac diagnosis. Data was analyzed using a t-test to compare hospitalization rates between participants and non-participants. Baseline admission rates were compared.
Results: 162 participants competed CR, 84 (52%) of minority race, 98 (60%) males, 95 (59%) were 65 or older. There were 229 non-participants, 147 (64%) of minority race, 147 (64%) males, 77 (34%) were 65 or older. Mean follow up time was 6 years. Completion of CR resulted in lower mean hospitalization rates (1.19 vs. 2.93, p = 0.001) in all groups: Caucasians 0.92 vs. 2.99 (p = 0.005), minorities 1.44 vs. 2.89 (p = 0.035), males 1.32 vs. 2.89 (p = 0.011), females 1.00 vs. 3.02 (p = 0.003), age 65 or older 0.96 vs. 3.96 (p = <0.001). There was no difference in baseline mean hospitalization rates between participants and non-participants when comparing race or gender: non-participant Caucasians 2.99 vs. minorities 2.89 (p = 0.895), participant Caucasians 0.92 vs. minorities 1.44 (p = 0.246), non-participant males 2.87 vs. females 3.02 (p = 0.834), participant males 1.32 vs. females 1.00 (p=0.489). There was no difference in baseline mean hospitalization rates when comparing participants younger than 65 with 65 or older (1.52 vs. 0.96, p = 0.212). Non-participants 65 or older had significantly higher hospitalization rates than younger non-participants (3.96 vs. 2.33, p = 0.027).
Conclusions: Long term follow-up of CR participants demonstrated a sustained morbidity benefit. Previous studies were limited to 1 year follow-up. Race, gender, and age did not influence morbidity, although participants older than 65 may have an additional morbidity reduction.
- © 2013 by American Heart Association, Inc.