Hybrid cardiac rehabilitation - The state of the science and the way forward

Understanding adaptive tasks in cardiac rehabilitation among patients with acute myocardial infarction: a qualitative study

BACKGROUND

While Cardiac Rehabilitation (CR) programs have shown effectiveness in improving cardiac outcomes, there is limited understanding of how patients perceive and adapt to these interventions. Furthermore, alternative modes of delivering CR that have received positive evaluations from participants remain underexplored, yet they have the potential to enhance CR uptake.

OBJECTIVES

To explore the patient experience in CR programmes following Acute Myocardial Infarction (AMI) and describe their adaptive processing.

PATIENTS AND METHODS

This qualitative study was conducted at a nationally certified centre in China between July 2021 and September 2022, encompassing three stages: in-hospital, centre-based, and home-based CR programs. Purposive sampling was used to select eligible AMI patients for in-depth semi-structured interviews. The interview outline and analytical framework were aligned with the key concepts derived from the middle-range theory of adaptation to chronic illness and the normalization process theory. The findings were reported following the Consolidated Criteria for Reporting Qualitative Research checklist.

RESULTS

Forty AMI patients were recruited. Four main themes describing the process of AMI patients normalizing CR intervention were identified, including (1) experiencing CR service driving by role's responsibilities, (2) engaging in collaborative relationship based on interpersonal trust, (3) exploring a personalized rehabilitation plan by complex integration, and (4) expecting a promised outcome to shape decision-making.

CONCLUSION

Integrated care interventions for AMI patients could benefit from a collaborative co-designed approach to ensure that CR interventions are normalized and fit into patients' daily lives. Organizational-level CR services should align with the rehabilitation needs and expectations of patients.

Optimal Medical Therapy for Stable Ischemic Heart Disease in 2024: Focus on Exercise and Cardiac Rehabilitation

Given the prevalence of chronic coronary disease, efforts should be made toward risk factor modification. Cardiac rehabilitation is a secondary prevention program consisting of tailored exercise and lifestyle counseling and has been shown to not only reduce cardiovascular morbidity and mortality but also improve quality of life and exercise capacity. Despite the benefits, it remains underutilized. Efforts should be made to increase referral for patients with chronic coronary disease to aid in symptom management and reduction of cardiovascular risk factors.

Training and attitudes concerning cardiac rehabilitation in Portugal: A national survey of physician members of the Portuguese Society of Cardiology

INTRODUCTION AND OBJECTIVES

Cardiac rehabilitation (CR) is a central component in the management of cardiovascular disease. While its potential benefits have been extensively explored and confirmed, its implementation is still suboptimal, due to various possible barriers. This study aimed to assess training and attitudes concerning CR among physicians in a Portuguese setting.

METHODS

An online questionnaire structured in three parts (participant characteristics, training and attitudes concerning CR, and a brief general knowledge assessment) was developed and sent to members of the Portuguese Society of Cardiology. The study population encompassed physicians with a medical specialty or residents from the third year onward of a specialty program.

RESULTS

A total of 97 individuals (57.7% male, 61.9% aged ≤50 years) presented valid answers. CR was available at the workplace of 54.6% of participants. Most of them considered that the time allocated to CR training during residency was inadequate, and thought that more time was needed for this purpose. Most had not dedicated (or intended to dedicate) time for CR training, with lack of time being the most frequently attributed reason. In terms of referral, a substantial proportion of subjects did not refer patients, with lack of CR centers and human resources being the most frequent reasons.

CONCLUSIONS

This survey provides contemporary data on CR training and attitudes, highlighting areas of potential improvement, such as time allocated to training in this area. These results could provide a useful pragmatic framework for optimization of training and awareness in this pivotal field of cardiovascular medicine.

Hybrid Cardiac Rehabilitation Program in a Low-Resource Setting: A Randomized Clinical Trial

Importance

While effective, cardiovascular rehabilitation (CR) as traditionally delivered is not well implemented in lower-resource settings.

Objective

To test the noninferiority of hybrid CR compared with traditional CR in terms of cardiovascular events.

Design, Setting, and Participants

This pragmatic, multicenter, parallel arm, open-label randomized clinical trial (the Hybrid Cardiac Rehabilitation Trial [HYCARET]) with blinded outcome assessment was conducted at 6 referral centers in Chile. Adults aged 18 years or older who had a cardiovascular event or procedure, no contraindications to exercise, and access to a mobile telephone were eligible and recruited between April 1, 2019, and March 15, 2020, with follow-up until July 29, 2021.

Interventions

Participants were randomized 1:1 in permuted blocks to the experimental arm, which received 10 center-based supervised exercise sessions plus counseling in 4 to 6 weeks and then were supported at home via telephone calls and text messages through weeks 8 to 12, or the control arm, which received the standard CR of 18 to 22 sessions with exercises and education in 8 to 12 weeks.

Main Outcomes and Measures

The primary outcome was cardiovascular events or mortality. Secondary outcomes were quality of life, return to work, and lifestyle behaviors measured with validated questionnaires; muscle strength and functional capacity, measured through physical tests; and program adherence and exercise-related adverse events, assessed using checklists.

Results

A total of 191 participants were included (mean [SD] age, 58.74 [9.80] years; 145 [75.92%] male); 93 were assigned to hybrid CR and 98 to standard CR. At 1 year, events had occurred in 5 unique participants in the hybrid CR group (5.38%) and 9 in the standard CR group (9.18%). In the intention-to-treat analysis, the hybrid CR group had 3.80% (95% CI, -11.13% to 3.52%) fewer cardiovascular events than the standard CR group, and relative risk was 0.59 (95% CI, 0.20-1.68) for the primary outcome. In the per-protocol analysis at different levels of adherence to the intervention, all 95% CIs crossed the noninferiority boundary (eg, 20% adherence: absolute risk difference, -0.35% [95% CI, -7.56% to 6.85%]; 80% adherence: absolute risk difference, 3.30% [95% CI, -3.70% to 10.31%]). No between-group differences were found for secondary outcomes except adherence to supervised CR sessions (79.14% [736 of 930 supervised sessions] in the hybrid CR group vs 61.46% [1201 of 1954 sessions] in the standard CR group).

Conclusions and Relevance

The results suggest that a hybrid CR program is noninferior to standard center-based CR in a low-resource setting, primarily in terms of recurrent cardiovascular events and potentially in terms of intermediate outcomes. Hybrid CR may induce superior adherence to supervised exercise. Clinical factors and patient preferences should inform CR model allocation.

Trial Registration

ClinicalTrials.gov Identifier: NCT03881150.

Cardiac Rehabilitation Phase II Outcomes Prior to and During COVID

BACKGROUND

The COVID pandemic limited access to many Cardiac Rehabilitation (CR) outpatient programs.

OBJECTIVE

The study aimed to examine the outcomes of patients in CR Phase II prior and during the pandemic.

METHODS

A single-site retrospective review of CR patients during 2019 (pre-COVID) and 2020 (COVID era) was performed. A linear mixed method explored the effect of COVID on 6-minute walk (6MWT), metabolic equivalents (METs), and quality of life (QOL). A generalized linear mixed method was used to explore the effect of COVID and CR on depression (PHQ-9).

RESULTS

Two-hundred and twelve patients were included. CR significantly improved 6MWT (b = 331.45, 95% CI: 295.62 ∼ 367.36), METs (b = 1.79, 95% CI: 1.55 ∼ 2.03), and QOL (b = 1.46, 95% CI: 0.81 ∼ 2.12). Significant interaction (P interaction = 0.04) between COVID and pre-post intervention was found for PHQ-9.

CONCLUSIONS

During COVID, patients perceived increased depression and poorer QOL. However, all outcomes improved significantly following CR.

Quo vadis cardiac rehabilitation; the role of comprehensive cardiac rehabilitation in modern cardiology

In accordance with the guidelines established by prominent European and global cardiology associations, comprehensive cardiac rehabilitation (CR) stands as an officially endorsed and highly recommended therapeutic approach (class I recommendations; level of evidence A) for a diverse spectrum of cardiac patients. Nevertheless, it is a cause for concern to observe that fewer than 50% of eligible patients are being effectively referred for CR, whether in an outpatient or inpatient setting. Concurrently, studies reveal that a substantial proportion of individuals with atherosclerotic cardiovascular disease maintain unhealthy lifestyles and exhibit suboptimal management of modifiable cardiovascular risk factors, including hypertension, lipid levels, and diabetes. Beyond the conventional patient profile encompassing those recovering from acute coronary syndrome with or without percutaneous coronary intervention, as well as patients who have undergone coronary or valvular surgery, contemporary CR now emphasizes specialized subgroups of patients. These include frail elderly patients, the female population with its unique considerations, individuals burdened by multiple cardiovascular comorbidities, those who have developed psychological consequences due to a cardiac illness and particularly those grappling with chronic heart failure. This editorial seeks to offer a state-of-the-art assessment of the significance and role of comprehensive CR within modern cardiology.

A Theory-Based, Technology-Assisted Intervention in a Hybrid Cardiac Rehabilitation Program for Patients with Coronary Heart Disease: A Feasibility Study

PURPOSE

To assess the feasibility of a technology-assisted intervention in a hybrid cardiac rehabilitation program among patients with coronary heart disease.

METHODS

This study was a two-arm parallel randomized controlled trial. Twenty-eight patients with coronary heart disease were randomly assigned to either the intervention group, receiving a 12-week technology-assisted intervention (n = 14), or the control group (n = 14), receiving usual care. Guided by the Health Belief Model, the intervention group received three center-based, supervised exercise training sessions, a fitness watch that served as a cue to action, six educational videos, and a weekly video call. The Self-efficacy for Exercise, exercise capacity, and Health Promoting Lifestyle Profile II were assessed at baseline and immediately post-intervention (12-weeks).

RESULTS

Among the 28 patients who participated in this study, 85.7% completed the program, with a relatively low attrition rate (14.3%). The number of exercise training sessions accomplished by the participants in the intervention group was 51.27 ± 19.41 out of 60 sessions (85.5%) compared to 36.46 ± 23.05 (60.8%) in the control group. No cardiac adverse events or hospitalizations were reported throughout the study. Participants in the intervention group showed greater improvement in health-promoting behaviors when compared with the control group at 12 weeks. Within-group effects demonstrated improvement in exercise self-efficacy and exercise capacity among participants in the intervention group. A participant satisfaction survey conducted immediately post-intervention revealed that participants were "very satisfied" (23.1%) and "satisfied" (76.9%) with the technology-assisted intervention.

CONCLUSIONS

The findings demonstrated that technology-assisted intervention in a hybrid cardiac rehabilitation program was feasible and suggested to be beneficial in improving exercise self-efficacy, exercise capacity, and health promoting behavior among patients with coronary heart disease. A full-scale study is needed to determine its effectiveness in the long term.

TRIAL AND PROTOCOL REGISTRATION

ClinicalTrials.gov NCT04862351. https://clinicaltrials.gov/ct2/show/NCT04862351.

Hybrid cardiac telerehabilitation for coronary artery disease in Australia: a cost-effectiveness analysis

BACKGROUND

Traditional cardiac rehabilitation programs are centre-based and clinically supervised, with their safety and effectiveness well established. Notwithstanding the established benefits, cardiac rehabilitation remains underutilised. A possible alternative would be a hybrid approach where both centre-based and tele-based methods are combined to deliver cardiac rehabilitation to eligible patients. The objective of this study was to determine the long-term cost-effectiveness of a hybrid cardiac telerehabilitation and if it should be recommended to be implemented in the Australian context.

METHODS

Following a comprehensive literature search, we chose the Telerehab III trial intervention that investigated the effectiveness of a long-term hybrid cardiac telerehabilitation program. We developed a decision analytic model to estimate the cost-effectiveness of the Telerehab III trial using a Markov process. The model included stable cardiac disease and hospitalisation health states and simulations were run using one-month cycles over a five-year time horizon. The threshold for cost-effectiveness was set at $AU 28,000 per quality-adjusted life-year (QALY). For the base analysis, we assumed that 80% completed the programme. We tested the robustness of the results using probabilistic sensitivity and scenario analyses.

RESULTS

Telerehab III intervention was more effective but more costly and was not cost-effective, at a threshold of $28,000 per QALY. For every 1,000 patients who undergo cardiac rehabilitation, employing the telerehabilitation intervention would cost $650,000 more, and 5.7 QALYs would be gained, over five years, compared to current practice. Under probabilistic sensitivity analysis, the intervention was cost-effective in only 18% of simulations. Similarly, if the intervention compliance was increased to 90%, it was still unlikely to be cost-effective.

CONCLUSION

Hybrid cardiac telerehabilitation is highly unlikely to be cost-effective compared to the current practice in Australia. Exploration of alternative models of delivering cardiac telerehabilitation is still required. The results presented in this study are useful for policymakers wanting to make informed decisions about investment in hybrid cardiac telerehabilitation programs.

Predictors of Improvement in Exercise Capacity After Cardiac Rehabilitation Differ Between Octogenarian and Young-Old Patients With Acute Myocardial Infarction

BACKGROUND

Whether the magnitude and predictors of improvement in exercise capacity after cardiac rehabilitation (CR) are the same between young-old (YO) and octogenarian (OCT) patients with acute myocardial infarction (AMI) is unknown.Methods and Results: We studied 284 YO (age range 65-69 years; mean [±SD] 67±1 years) and 65 OCT (age range ≥80 years; mean [±SD] 83±2 years) patients who participated in a post-AMI CR program. After 3 months of CR, peak oxygen uptake (PV̇O₂) measured during cardiopulmonary exercise testing improved significantly in both age groups (P<0.01), although the percentage increase in PV̇O₂(%∆PV̇O₂) was significantly smaller in the OCT than YO group (5.4±13.7% vs. 10.0±12.8%; P<0.01). Multiple regression analysis demonstrated that independent predictors of %∆PV̇O₂were the number of outpatient CR (OPCR) sessions attended (P=0.015), left ventricular ejection fraction (P=0.028), and baseline PV̇O₂(P=0.0007) in the YO group; and the number of sessions attended (P=0.018), atrial fibrillation (P=0.042), and the presence of nutritional risk (Geriatric Nutritional Risk Index ≤98; P=0.036) in the OCT group.

CONCLUSIONS

The predictors of improvement in exercise capacity after CR differed between the YO and OCT patients with AMI. To obtain a greater improvement in PV̇O₂in CR, frequent OPCR session attendance may be necessary in both groups; in addition, particularly in OCT patients, better nutritional status may be important.

Women-Focused Cardiovascular Rehabilitation: An International Council of Cardiovascular Prevention and Rehabilitation Clinical Practice Guideline

Women-focused cardiovascular rehabilitation (CR; phase II) aims to better engage women, and might result in better quality of life than traditional programs. This first clinical practice guideline by the International Council of Cardiovascular Prevention and Rehabilitation (ICCPR) provides guidance on how to deliver women-focused programming. The writing panel comprised experts with diverse geographic representation, including multidisciplinary health care providers, a policy-maker, and patient partners. The guideline was developed in accordance with Appraisal of Guidelines for Research and Evaluation (AGREE) II and the Reporting Items for practice Guidelines in HealTh care (RIGHT). Initial recommendations were on the basis of a meta-analysis. These were circulated to a Delphi panel (comprised of corresponding authors from review articles and of programs delivering women-focused CR identified through ICCPR's audit; N = 76), who were asked to rate each on a 7-point Likert scale in terms of impact and implementability (higher scores positive). A Web call was convened to achieve consensus; 15 panelists confirmed strength of revised recommendations (Grading of Recommendations Assessment, Development, and Evaluation [GRADE]). The draft underwent external review from CR societies internationally and was posted for public comment. The 14 drafted recommendations related to referral (systematic, encouragement), setting (model choice, privacy, staffing), and delivery (exercise mode, psychosocial, education, self-management empowerment). Nineteen (25.0%) survey responses were received. For all but 1 recommendation, ≥ 75% voted to include; implementability ratings were < 5/7 for 4 recommendations, but only 1 for effect. Ultimately 1 recommendation was excluded, 1 separated into 2 and all revised (2 substantively); 1 recommendation was added. Overall, certainty of evidence for the final recommendations was low to moderate, and strength mostly strong. These recommendations and associated tools can support all programs to feasibly offer some women-focused programming.

Enhancing participation in cardiac rehabilitation: Focus on underserved populations

Participation in cardiac rehabilitation (CR) significantly decreases morbidity and mortality and improves quality of life following a wide variety of cardiac diagnoses and interventions. However, participation rates and adherence with CR are still suboptimal and certain populations, such as women, minorities, and those of lower socio-economic status, are particularly unlikely to engage in and complete CR. In this paper we review the current status of CR participation rates and interventions that have been used successfully to improve CR participation. In addition, we review populations known to be less likely to engage in CR, and interventions that have been used to improve participation specifically in these underrepresented populations. Finally, we will explore how CR programs may need to expand or change to serve a greater proportion of CR-eligible populations. The best studied interventions that have successfully increased CR participation include automated referral to CR and utilization of a CR liaison person to coordinate the sometimes awkward transition from inpatient status to outpatient CR participation. Furthermore, it appears likely that maximizing secondary prevention in these at-risk populations will require a combination of increasing attendance at traditional center-based CR programs among underrepresented populations, improving and expanding upon tele- or community-based programs, and alternative strategies for improving secondary prevention in those who do not participate in CR.