Adult Congenital Heart Disease-Coping And REsilience (ACHD-CARE): Rationale and methodology of a pilot randomized controlled trial

INTRODUCTION

One-third of North American adults with congenital heart disease (CHD) have diagnosable mood or anxiety disorders and most do not receive mental health treatment. There are no published interventions targeting the psychosocial needs of patients with CHD of any age. We describe the development of a group psychosocial intervention aimed at improving the psychosocial functioning, quality of life, and resilience of adults with CHD and the design of a study protocol to determine the feasibility of a potential full-scale randomized controlled trial (RCT).

METHODS/DESIGN

Drawing upon our quantitative and qualitative research, we developed the Adult CHD-Coping And REsilience (ACHD-CARE) intervention and designed a feasibility study that included a 2-parallel arm non-blinded pilot RCT. Eligible participants (CHD, age ≥ 18 years, no planned surgery, symptoms suggestive of a mood and/or anxiety disorder) were randomized to the ACHD-CARE intervention or Usual Care (1:1 allocation ratio). The group intervention was delivered during eight 90-minute weekly sessions. Feasibility will be assessed in the following domains: (i) process (e.g. recruitment and retention), (ii) resources, (iii) management, (iv) scientific outcomes, and (v) intervention acceptability.

DISCUSSION

This study underscores the importance of carefully developing and testing the feasibility of psychosocial interventions in medical populations before moving to full-scale clinical trials. At study conclusion, we will be poised to make one of three determinations for a full-scale RCT: (1) feasible, (2) feasible with modifications, or (3) not feasible. This study will guide the future evaluation and provision of psychosocial treatment for adults with CHD.

Observing temporal trends in cardiac rehabilitation from 1996 to 2010 in Ontario: characteristics of referred patients, programme participation and mortality rates

OBJECTIVES

We sought to describe temporal trends in the sociodemographic and clinical characteristics of participants referred to cardiac rehabilitation (CR), and its effect on programme participation and all-cause mortality over 14 years.

SETTING

A large CR centre in Toronto, Canada.

PARTICIPANTS

Consecutive patients between 1996 and 2010.

PRIMARY AND SECONDARY OUTCOME MEASURES

Referrals received were deterministically linked to administrative data, to complement referral form abstraction. Out-of-hospital deaths were identified using vital statistics. Patients were tracked until 2012, and mortality was ascertained. Percentage attendance at prescribed sessions was also assessed.

RESULTS

There were 29,171 referrals received, of which 28,767 (98.6%) were successfully linked, of whom 22,795 (79.2%) attended an intake assessment. The age of the referred population steadily increased, with more females, less affluent and more single patients referred over time (p<0.001). More patients were referred following percutaneous coronary intervention and less following coronary artery bypass graft surgery (p<0.001). The number of comorbidities decreased (p<0.001). Hypertension increased over time (p<0.001), yet the control of cholesterol steadily improved over time. The proportion of smokers decreased over time (p<0.001). Participation in CR significantly declined, and there were no significant changes in mortality. 3-year mortality rates were less than 5%.

CONCLUSIONS

Characteristics of referred patients tended to reflect broader trends in risk factors and cardiovascular disease burden. Physicians appear to be referring more sociodemographically diverse patients to CR; however, programmes may need to better adapt to engage these patients to fully participate. More complex patients should be referred, using explicit criteria-based referral processes.

A Comparison of Accelerometer Cut-Points among Individuals with Coronary Artery Disease

Background

Accurate assessment of physical activity among coronary artery disease patients is important for assessing adherence to interventions. The study compared moderate-to-vigorous physical intensity activity and relationships with cardiometabolic health/fitness indicators using accelerometer cut-points developed for coronary artery disease patients versus those developed in younger and middle-aged adults.

Methods

A total of 231 adults with coronary artery disease wore an Actigraph GT3X accelerometer for ≥4 days (≥10 hours/day). Moderate-to-vigorous intensity physical activity between cut-points was compared using Bland-Altman analyses. Partial spearman correlations assessed relationships between moderate-to-vigorous intensity physical activity from each cut-point with markers of cardiometabolic health and fitness while controlling for age and sex.

Results

Average time spent in bouts of moderate-to-vigorous intensity physical activity using coronary artery disease cut-points was significantly higher than the young (mean difference: 13.0±12.8 minutes/day) or middle-aged (17.0±15.2 minutes/day) cut-points. Young and middle-aged cut-points were more strongly correlated with body mass index, waist circumference and systolic blood pressure, while coronary artery disease cut-points had stronger relationships with triglycerides, high-density and low-density lipoproteins. All were similarly correlated with measures of fitness.

Conclusion

Researchers need to exert caution when deciding on which cut-points to apply to their population. Further work is needed to validate which cut-points provide a true reflection of moderate-to-vigorous intensity physical activity and to examine relationships among patients with varying fitness.

Cardiac rehabilitation wait times and relation to patient outcomes

BACKGROUND

Most cardiac rehabilitation (CR) associations have published guidelines recommending timely and early access.

AIM

To review the effects of early CR initiation on patient outcomes, and to describe the wait times associated with positive outcomes.

DESIGN

Studies were identified via a limited systematic search on key resource databases, including MEDLINE, EMBASE, and CINAHL. A focused Internet search was conducted with a concentrated grey literature search for evidence reports.

POPULATION

Studies which enrolled adult cardiac patients who were eligible to participate in a CR program, based on CR guidelines, were considered.

METHODS

Methodological filters limited retrieval for articles published between January 1, 2002-March 4, 2013. Two reviewers screened references which were identified by the search strategy by examining the titles and abstracts. If the abstract identified the appropriate patient group, and addressed CR wait times, the full article was obtained for inclusion consideration. Ten articles were included for review. Results were extracted from included studies, and results were synthesized narratively.

RESULTS

Early access was generally shown to be safe, and to have positive effects in terms of cardiac function and patient enrollment. Positive effects on functional capacity were shown with CR initiation within 3 months from an index event. Effects on quality of life were null in the long-term. Wait times ranged from 8.5-127.0 days. Seventeen days may be the optimal wait time to balance benefit with risk.

CONCLUSION

Timely access to cardiac rehab can achieve greater patient enrolment. Research on the effects of early access on heart healthy behaviors and mental health are needed. Evidence-based recommendations for wait times should be formulated by indication.

CLINICAL REHABILITATION IMPACT

Delays to intake should be minimized, and wait times shortened significantly, so that patients can reap the maximum benefits from CR participation.

Behavior determinants among cardiac rehabilitation patients receiving educational interventions: an application of the health action process approach

OBJECTIVES

To (1) test the effect of a health action process approach (HAPA) theory-based education program in cardiac rehabilitation (CR) compared to traditional education on patient knowledge and HAPA constructs; and, (2) investigate the theoretical correlates of exercise behavior among CR patients receiving theory-based education.

METHODS

CR patients were exposed to an existing or HAPA-based 6 month education curriculum in this quasi-experimental study. Participants completed a survey assessing exercise behavior, HAPA constructs, and knowledge pre and post-program.

RESULTS

306 patients consented to participate, of which 146 (47.7%) were exposed to the theory-based educational curriculum. There was a significant improvement in patients' overall knowledge pre- to post-CR, as well as in some HAPA constructs and exercise behavior, regardless of curriculum (p < 0.05). Path analysis revealed that knowledge was significantly related to intention formation, and intentions to engage in exercise were not directly related to behavior, which required action planning.

CONCLUSIONS

The theoretically-informed education curriculum was not associated with greater knowledge or exercise behavior as expected. Education in CR improves knowledge, and theoretical constructs related to exercise behavior.

PRACTICE IMPLICATIONS

Educational curricula should be designed to not only increase patients' knowledge, but also enhance intentions, self-efficacy, and action planning.

Narrative review comparing the benefits of and participation in cardiac rehabilitation in high-, middle- and low-income countries

BACKGROUND

Cardiovascular disease is a leading cause of morbidity worldwide. Cardiac rehabilitation (CR) is a comprehensive secondary prevention approach, with established benefits in reducing morbidity in high-income countries (HICs). The objectives of this review were to summarise what is known about the benefits of CR, including consideration of cost-effectiveness, in addition to rates of CR participation and adherence in high-, as well as low- and middle-income countries (LMICs).

METHODS

A literature search of Medline, Excerpta Medica Database (EMBASE), and Google Scholar was conducted for published articles from database inception to October 2013. The search was first directed to identify meta-analyses and reviews reporting on the benefits of CR. Then, the search was focussed to identify articles reporting CR participation and dropout rates. Full-text versions of relevant abstracts were summarised qualitatively.

RESULTS

Based on meta-analysis, CR significantly reduced all-cause mortality by 13%-26%, cardiac mortality by 20%-36%, myocardial re-infarction by 25%-47%, and risk factors. CR is cost-effective in HICs. In LMICs, CR is demonstrated to reduce risk factors, with no studies on mortality or cost-effectiveness. Based on available data, CR participation rates are <50% in the majority of countries, with documented dropout rates up to 56% and 82% in high- and middle-income countries, respectively.

CONCLUSIONS

CR is a beneficial intervention for heart patients in high and LMICs, but is underutilised with low participation and adherence rates worldwide. While more research is needed in LMICs, strategies shown to increase participation and program adherence should be implemented.

Disease-related knowledge in cardiac rehabilitation enrollees: correlates and changes

OBJECTIVES

To describe (1) patients' disease-related knowledge at cardiac rehabilitation (CR) entry; (2) correlates of this knowledge; (3) whether CR completion is related to knowledge; and (4) behavioral correlates of knowledge.

METHODS

For this prospective, observational study, a convenience sample of new CR patients was approached at 3 programs to complete a survey. It consisted of sociodemographic items, heart-health behavior surveys, and the CADE-Q. Patients were provided a similar survey 6 months later.

RESULTS

214 patients completed the CADE-Q at both points, with scores demonstrating "acceptable" to "good" knowledge. Higher knowledge at CR entry was significantly associated with greater education, being married, greater English-language proficiency, and history of percutaneous coronary intervention (p≤0.05). The 118 (55.1%) patients that completed CR demonstrated significantly higher knowledge than non-enrollees at post-test (p≤0.05). There was a significant positive association between knowledge and physical activity (p≤0.01) and nutrition (p≤0.05) at post-test, but no association with smoking or medication adherence.

CONCLUSIONS

CR adherence ensures patients sustain knowledge needed to optimize their disease management, and perhaps ultimately their health outcomes.

PRACTICE IMPLICATIONS

CR completion should be promoted so patients remain educated about their disease management, and the health behaviors observed will be practiced in a greater proportion of patients.

Development and psychometric validation of the second version of the Coronary Artery Disease Education Questionnaire (CADE-Q II)

OBJECTIVES

To develop and psychometrically-validate a revised version of the Coronary Artery Disease Education Questionnaire (CADE-Q)--a tool to assess patients' knowledge about CAD in cardiac rehabilitation (CR).

METHODS

After a needs assessment, a literature review and focus group with CR experts, the revised questionnaire was developed. It underwent pilot-testing in 30 patients, which lead to further refinement. The questionnaire was then psychometrically-tested in 307 CR patients. Internal consistency was assessed using Cronbach's alpha, the dimensional structure through exploratory factor analysis, and criterion validity with regard to educational level.

RESULTS

Cronbach's alpha was 0.91. Criterion validity was supported by significant differences in mean scores by educational level (p<0.001). Factor analysis revealed four factors, which were internally-consistent (0.65-0.77), and well-defined by items. The mean total score was 64.2±18.1/93. Patients with a history of heart failure, cardiomyopathy and percutaneous coronary intervention (p<0.05) had significantly higher knowledge scores compared with patients without such a history. Knowledge about exercise and their medical condition was significantly higher than risk factors, nutrition and psychosocial risk.

CONCLUSIONS

The CADE-QII has good reliability and validity.

PRACTICAL IMPLICATIONS

This tool may be useful to assess CR participants' knowledge gaps, and to evaluate the efficacy of educational delivery in CR.

Sex dependent risk factors for mortality after myocardial infarction: individual patient data meta-analysis

BACKGROUND

Although a number of risk factors are known to predict mortality within the first years after myocardial infarction, little is known about interactions between risk factors, whereas these could contribute to accurate differentiation of patients with higher and lower risk for mortality. This study explored the effect of interactions of risk factors on all-cause mortality in patients with myocardial infarction based on individual patient data meta-analysis.

METHODS

Prospective data for 10,512 patients hospitalized for myocardial infarction were derived from 16 observational studies (MINDMAPS). Baseline measures included a broad set of risk factors for mortality such as age, sex, heart failure, diabetes, depression, and smoking. All two-way and three-way interactions of these risk factors were included in Lasso regression analyses to predict time-to-event related all-cause mortality. The effect of selected interactions was investigated with multilevel Cox regression models.

RESULTS

Lasso regression selected five two-way interactions, of which four included sex. The addition of these interactions to multilevel Cox models suggested differential risk patterns for males and females. Younger women (age<50) had a higher risk for all-cause mortality than men in the same age group (HR 0.7 vs. 0.4), while men had a higher risk than women if they had depression (HR 1.4 vs. 1.1) or a low left ventricular ejection fraction (HR 1.7 vs. 1.3). Predictive accuracy of the Cox model was better for men than for women (area under the curves: 0.770 vs. 0.754).

CONCLUSIONS

Interactions of well-known risk factors for all-cause mortality after myocardial infarction suggested important sex differences. This study gives rise to a further exploration of prediction models to improve risk assessment for men and women after myocardial infarction.

Women's preferences for cardiac rehabilitation program model: a randomized controlled trial

BACKGROUND

Although cardiac rehabilitation (CR) is effective, women often report programs do not meet their needs. Innovative models have been developed that may better suit women. The objectives of the study were to describe: (1) adherence to CR model allocation; (2) satisfaction by model attended; and (3) CR preferences.

DESIGN AND METHODS

Tertiary objectives from a randomized controlled trial of female patients randomized to mixed-sex, women-only, or home-based CR were tested. Patients were recruited from six hospitals. Consenting participants were asked to complete a survey and undertook a CR intake assessment. Eligible patients were randomized. Participants were mailed a follow-up survey six months later. Adherence to model allocation was ascertained from CR charts.

RESULTS

Overall 169 (18.6%) patients were randomized, of which 116 (68.6%) completed the post-test survey. Forty-five (26.6%) participants did not receive the allocated model, with those referred to home-based CR least likely to attend the allocated model (n = 25; 45.4%). Semi-structured interviews revealed participants also often switched from women-only to mixed-sex CR due to time conflicts. Satisfaction was high across all models (mean = 4.23 ± 1.16/5; p = 0.85) but participants in the women-only program felt significantly more comfortable in their workout attire (p = 0.003) and perceived the environment as less competitive (p = 0.02). Patients equally preferred mixed-sex (n = 44, 41.9%) and women-only (n = 44, 41.9%) CR, over home-based (n = 17, 16.2%), with patients preferring the model they attended.

CONCLUSION

Females were highly satisfied regardless of CR model attended but preferred supervised programs most. Patient preference and session timing should be considered in program model allocation decisions.

The impact of patient-healthcare provider discussions on enrollment in cardiovascular rehabilitation

OBJECTIVE

Secondary prevention programs such as cardiovascular rehabilitation significantly decrease the burden of cardiovascular disease, yet are under-used. The most successful strategy to promote cardiovascular rehabilitation utilization is systematic referral with a patient-provider discussion. This study investigated: (i) the elements of patient-provider discussions related to patient cardiovascular rehabilitation enrollment, and (ii) the frequency and correlates of these discussion elements.

DESIGN/PARTICIPANTS

This was a prospective study of cardiovascular patients and their healthcare providers. Discussions about "secondary prevention" were audio-recorded. Utterances were coded using the Roter Interaction Analysis System. Two months later, cardiovascular rehabilitation enrollment was ascertained.

RESULTS

Discussions between 26 healthcare providers and 50 patients were recorded, of whom 27 (54.0%) enrolled in cardiovascular rehabilitation. Participants were significantly more likely to enroll in cardiovascular rehabilitation when their healthcare providers offered less reassurance and optimism (odds ratio (OR) = 0.81), and when the patient asked more questions related to lifestyle (OR = 4.98). These were not common.

CONCLUSION

While caution is warranted due to the number of comparisons undertaken such that associations observed may be chance associations, these novel findings suggest that not overstating the beneficial effects of acute treatment, and allowing patients more time to ask questions about needed lifestyle changes should be investigated in future research.

Effect of referral strategies on access to cardiac rehabilitation among women

BACKGROUND

Despite its proven benefits and need, women's access to cardiac rehabilitation (CR) is suboptimal. Referral strategies, such as systematic referral, have been advocated to improve access to CR. This study examined sex differences in CR referral and enrollment by referral strategies; and the impact of referral strategies for referral and enrollment concordance among women.

DESIGN

Prospective cohort study.

METHODS

This prospective study included 2635 coronary artery disease inpatients from 11 Ontario hospitals that utilized one of four referral strategies. Participants completed a sociodemographic survey, and clinical data were extracted from charts. One year later, 1809 participants (452 (25%) women) completed a mailed survey that assessed CR utilization. Referral strategies were compared among women using generalized estimating equations to control for the effect of hospital.

RESULTS

Overall, significantly more men than women were referred (67.2% and 57.8% respectively, p < 0.001), and enrolled in CR (58.6% and 49.3% respectively, p = 0.001). Of the retained women, combined systematic and liaison-facilitated referral resulted in significantly greater CR referral (OR 10.3, 95% CI 4.11-25.58) and enrollment (OR 6.6, 95% CI 4.34-9.92) among women when compared with usual referral. Conversely, concordance between referral and enrollment was greatest following usual referral (K = 0.85), and decreased with referral intensity.

CONCLUSIONS

While a lower proportion of referred patients enroll, systematic and liaison-facilitated inpatient referral strategies result in the greatest CR enrollment rates among women. Such strategies have the potential to improve access among women, and reduce 'cherry picking' of patients for referral.

Global availability of cardiac rehabilitation

Cardiovascular disease (CVD) is the most-prevalent noncommunicable disease and leading cause of death globally. Over 80% of deaths from CVD occur in low-income and middle-income countries (LMICs). To limit the socioeconomic impact of CVD, a comprehensive approach to health care is needed. Cardiac rehabilitation delivers a cost-effective and structured exercise, education, and risk reduction programme, which can reduce mortality by up to 25% in addition to improving a patient's functional capacity and lowering rehospitalization rates. Despite these benefits and recommendations in clinical practice guidelines, cardiac rehabilitation programmes are grossly under-used compared with revascularization or medical therapy for patients with CVD. Worldwide, only 38.8% of countries have cardiac rehabilitation programmes. Specifically, 68.0% of high-income and 23% of LMICs (8.3% for low-income and 28.2% for middle-income countries) offer cardiac rehabilitation programmes to patients with CVD. Cardiac rehabilitation density estimates range from one programme per 0.1 to 6.4 million inhabitants. Multilevel strategies to augment cardiac rehabilitation capacity and availability at national and international levels, such as supportive public health policies, systematic referral strategies, and alternative models of delivery are needed.

A systematic review of patient education in cardiac patients: do they increase knowledge and promote health behavior change?

OBJECTIVE

(1) To investigate the impact of education on patients' knowledge; (2) to determine if educational interventions are related to health behavior change in cardiac patients; and (3) to describe the nature of educational interventions.

METHODS

A literature search of several electronic databases was conducted for published articles from database inception to August 2012. Eligible articles included cardiac patients, and described delivery of educational interventions by a healthcare provider. Outcomes were knowledge, smoking, physical activity, dietary habits, response to symptoms, medication adherence, and psychosocial well-being. Articles were reviewed by 2 authors independently.

RESULTS

Overall, 42 articles were included, of which 23 (55%) were randomized controlled trials, and 16 (38%) were considered "good" quality. Eleven studies (26%) assessed knowledge, and 10 showed a significant increase with education. With regard to outcomes, educational interventions were significantly and positively related to physical activity, dietary habits, and smoking cessation. The nature of interventions was poorly described and most frequently delivered post-discharge, by a nurse, and in groups.

CONCLUSIONS

Findings support the benefits of educational interventions in CHD, though increase in patients' knowledge and behavior change.

PRACTICE IMPLICATIONS

Future reporting of education interventions should be more explicitly characterized, in order to be reproducible and assessed.

Elements of patient-health-care provider communication related to cardiovascular rehabilitation referral

Cardiovascular rehabilitation has been designed to decrease the burden of cardiovascular disease. This study described (1) patient-health-care provider interactions regarding cardiovascular rehabilitation and (2) which discussion elements were related to patient referral. This was a prospective study of cardiovascular patients and their health-care providers. Discussion utterances were coded using the Roter Interaction Analysis System. Discussion between 26 health-care providers and 50 patients were recorded. Cardiovascular rehabilitation referral was related to greater health-care provider interactivity (odds ratio = 2.82, 95% confidence interval = 1.01-7.86) and less patient concern and worry (odds ratio = 0.64, 95% confidence interval = 0.45-0.89). Taking time for reciprocal discussion and allaying patient anxiety may promote greater referral.

Healthcare providers' awareness of the information needs of their cardiac rehabilitation patients throughout the program continuum

OBJECTIVE

To (1) describe cardiac rehabilitation (CR) participant information needs, (2) investigate whether CR providers are cognizant of patient's information needs and preferred delivery formats, and (3) investigate whether patient information needs change over the course of CR.

METHODS

In this cross-sectional study, 306 CR patients and 28 CR providers completed a survey. The survey consisted of the Information Needs in CR (INCR) questionnaire, and items about preferred education delivery formats.

RESULTS

Low-income CR participants had significantly greater information needs than high-income participants. CR providers were cognizant of patient information needs, except patients did desire more information on diagnosis and treatment than providers perceived (p<0.01). Books, lectures and discussion were identified as the preferred delivery formats by both patients and providers. There were some significant differences in patient information needs over the course of the program, particularly in relation to concerns and risk factors.

CONCLUSION

CR patients desire information in many areas, particularly regarding emergency/safety and diagnosis/treatment. CR providers were highly cognizant of patient information needs; however, these do change over time.

PRACTICE IMPLICATIONS

These findings could inform evaluation and improvement of CR education programming, to ensure programs are meeting patient information needs across all stages of recovery.