Psychological Distress in Cardiac Rehabilitation Participants

Identifying Factors for Low-Risk Participation in Alternative Cardiac Rehabilitation Models for Patients with Coronary Heart Disease Using MI'S SCOREPAD

Introduction

Although a recent joint society scientific statement (the American Association of Cardiovascular Pulmonary Rehabilitation, the American Heart Association, and the American College of Cardiology) suggests home-based cardiac rehab (CR) is appropriate for low- and moderate-risk patients, there are no paradigms to define such individuals with coronary heart disease.

Methods

We reviewed a decade of data from all patients with coronary heart disease enrolled in a single CR center (University of Michigan) to identify the prevalence of low-risk factors, which may inform on consideration for participation in alternative models of CR. Low-risk factors included not having any of the following: metabolic syndrome, presence of implantable cardioverter defibrillator or permanent pacemaker, active smoking, prior stroke, congestive heart failure, obesity, advanced renal disease, poor exercise capacity, peripheral arterial disease, angina, or clinical depression (MI'S SCOREPAD). We report on the proportion of participants with these risk factors and the proportion with all of these low-risk factors.

Results

The mean age of CR participants (n = 1984) was 63 years; 25% were women, and 82% were non-Hispanic White. The mean number of low-risk factors was 8.5, which was similar in the 2011-2012 and 2018-2019 cohorts (8.5 vs. 8.3, respectively, P = 0.08). Additionally, 9.3% of the 2011-2012 cohort and 7.6% of the 2018-2019 cohort had all 11 of the low-risk factors.

Conclusion

In this observational study, we provide a first paradigm of identifying factors among coronary heart disease patients that may be considered low-risk and likely high-gain for participation in alternative models of CR. Further work is needed to track clinical outcomes in patients with these factors to determine thresholds for enrolling participants in alternative forms of CR.

Mental and psychosocial health and health related quality of life before and after cardiac rehabilitation: a prospective cohort study with comparison to specific population norms

Background

Data on mental health improvement after cardiac rehabilitation (CR) are contradictory. The aim was to examine the mental and psycho-social health of patients admitted to our rehabilitation center following hospital treatment for acute coronary syndrome, before and after multidisciplinary CR.

Methods

Outcome was measured at admission and discharge by the 36-Item Short Form Survey (SF-36), the Symptom Checklist-90 Revised (SCL-90R), the Coping Strategy Questionnaire (CSQ) and the 6-min-walking distance test. The patients’ health status was compared with norms of sex-, age- and comorbidity-matched data from the German general population. Score differences from norms were measured by standardized mean differences (SMDs); health changes were quantified by standardized effect sizes (ESs). Their importance for comprehensive assessment was quantified by explorative factor analysis.

Results

Of n = 70 patients followed-up (male: 79%; mean age: 66.6 years), 79% had ≥ 3 comorbidities. At baseline, SF-36 Physical functioning (SMD = − 0.75), Role physical (− 0.90), Social functioning (SMD = − 0.44), and Role emotional (SMD = − 0.45) were significantly worse than the norm. After CR, almost all scores significantly improved by ES = 0.23 (SCL-90R Interpersonal sensitivity) to 1.04 (SF-36 Physical functioning). The strongest factor (up to 41.1% explained variance) for health state and change was the mental health domain, followed by function & pain (up to 26.3%).

Conclusions

Normative deficits in physical and psycho-social health were reported at baseline. After CR, at follow-up, all scores, except phobia, showed significant improvement. The comprehensive measurement of bio-psycho-social health should not be limited to depression and anxiety but include, especially, the somatization and social participation dimensions.

Randomised controlled trial of a 12 week yoga intervention on negative affective states, cardiovascular and cognitive function in post-cardiac rehabilitation patients

BACKGROUND

Negative affective states such as anxiety, depression and stress are significant risk factors for cardiovascular disease, particularly in cardiac and post-cardiac rehabilitation populations.Yoga is a balanced practice of physical exercise, breathing control and meditation that can reduce psychosocial symptoms as well as improve cardiovascular and cognitive function. It has the potential to positively affect multiple disease pathways and may prove to be a practical adjunct to cardiac rehabilitation in further reducing cardiac risk factors as well as improving self-efficacy and post-cardiac rehabilitation adherence to healthy lifestyle behaviours.

METHOD AND DESIGN

This is a parallel arm, multi-centre, randomised controlled trial that will assess the outcomes of post- phase 2 cardiac rehabilitation patients assigned to a yoga intervention in comparison to a no-treatment wait-list control group. Participants randomised to the yoga group will engage in a 12 week yoga program comprising of two group based sessions and one self-administered home session each week. Group based sessions will be led by an experienced yoga instructor. This will involve teaching beginner students a hatha yoga sequence that incorporates asana (poses and postures), pranayama (breathing control) and meditation. The primary outcomes of this study are negative affective states of anxiety, depression and stress assessed using the Depression Anxiety Stress Scale. Secondary outcomes include measures of quality of life, and cardiovascular and cognitive function. The cardiovascular outcomes will include blood pressure, heart rate, heart rate variability, pulse wave velocity, carotid intima media thickness measurements, lipid/glucose profiles and C-reactive protein assays. Assessments will be conducted prior to (week 0), mid-way through (week 6) and following the intervention period (week 12) as well as at a four week follow-up (week 16).

DISCUSSION

This study will determine the effect of yoga practice on negative affective states, cardiovascular and cognitive function in post-phase 2 cardiac rehabilitation patients. The findings may provide evidence to incorporate yoga into standardised cardiac rehabilitation programs as a practical adjunct to improve the management of psychosocial symptoms associated with cardiovascular events in addition to improving patients' cognitive and cardiovascular functions.

TRIAL REGISTRATION

ACTRN12612000358842.

Effect of exercise-based cardiac rehabilitation on multiple atherosclerotic risk factors in patients taking antidepressant medication

Antidepressants might increase compliance with cardiovascular disease risk reduction interventions. However, antidepressants have been linked to deleterious metabolic effects. In the present multicenter study, we sought to determine whether patients who take antidepressants derive the expected benefits from cardiac rehabilitation in terms of improvements in multiple atherosclerotic risk factors. A cohort of 26,957 patients who had completed a baseline assessment before participating in an exercise-based cardiac rehabilitation program constituted the study population. The patients were stratified into 3 cohorts (i.e., nondepressed, depressed unmedicated, and depressed medicated) at baseline according to a self-reported history of depression and the current use of antidepressants. Risk factors were assessed at baseline and after ∼12 weeks of program participation. A self-reported history of depression was present at baseline in 5,172 patients (19.2%). Of these patients, 2,147 (41.5%) were taking antidepressants. Patients in the nondepressed cohort (49.4% completion) were more likely (p <0.001) to complete the exit assessment than patients in the depressed unmedicated (44.5% completion) or depressed medicated (43.5% completion) cohorts. Patients in all 3 cohorts who completed the exit assessment showed significant improvement in multiple risk factors. Moreover, the magnitude of improvement in blood pressure, serum lipids and lipoproteins, fasting glucose, weight, and body mass index was similar (p >0.05) in patients taking antidepressants and those who were not. In conclusion, our study is the first to show that antidepressants do not offset the average magnitude of improvement in multiple atherosclerotic risk factors that occurs with completion of a cardiac rehabilitation program.