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Long-term effects of cardiac rehabilitation after heart valve surgery -- results from the randomised CopenHeart VR trial |
Sibilitz KL, Tang LH, Berg SK, Thygesen LC, Risom SS, Rasmussen TB, Schmid JP, Borregaard B, Hassager C, Kober L, Taylor RS, Zwisler AD |
Scandinavian Cardiovascular Journal 2022 Dec;56(1):247-255 |
clinical trial |
7/10 [Eligibility criteria: No; Random allocation: Yes; Concealed allocation: No; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: Yes; Intention-to-treat analysis: Yes; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed* |
AIMS: The CopenHeartVR trial found positive effects of cardiac rehabilitation (CR) on physical capacity at 4 months. The long-term effects of CR following valve surgery remains unclear, especially regarding readmission and mortality. Using data from he CopenHeartVR Trial we investigated long-term effects on physical capacity, mental and physical health and effect on mortality and readmission rates as prespecified in the original protocol. METHODS: A total of 147 participants were included after heart valve surgery and randomly allocated 1:1 to 12-weeks exercise-based CR including a psycho-educational programme (intervention group) or control. Physical capacity was assessed as peak oxygen uptake (VO2 peak) measured by cardiopulmonary exercise testing, mental and physical health by Short Form-36 questionnaire, Hospital Anxiety and Depression Scale, and HeartQol. Mortality and readmission were obtained from hospital records and registers. Groups were compared using mixed regression model analysis and log rank test. RESULTS: No differences in VO2 peak at 12 months or in self-assessed mental and physical health at 24 months (68% versus 75%, p = 0.120) was found. However, our data demonstrated reduction in readmissions in the intervention group at intermediate time points; after 3, 6 (43% versus 59%, p = 0.03), and 12 (53% versus 67%, p = 0.04) months, respectively, but no significant effect at 24 months. CONCLUSIONS: Exercise-based CR after heart valve surgery reduces combined readmissions and mortality up to 12 months despite lack of improvement in exercise capacity, physical and mental health long-term. Exercise-based CR can ensure short-term benefits in terms of physical capacity, and lower readmission within a year, but more research is needed to sustain these effects over a longer time period. These considerations should be included in the management of patients after heart valve surgery.
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