Increasing Access to Cardiac Rehabilitation

Improved Cardiac Rehabilitation Referral Rate Utilizing a Multidisciplinary Quality Improvement Team

Introduction Cardiac rehabilitation (CR) is an underutilized resource in patients with ischemic heart disease, despite being a Class IA recommendation. In this study, a multidisciplinary quality improvement (QI) team aimed to improve CR referrals by standardizing the ordering process at our hospital system. Method By using a collaborative approach involving the electronic medical record (EMR), medical provider education, and hospital protocols, our two-hospital healthcare system was able to successfully identify barriers to CR referral rates and implement interventions for these barriers. All physicians and medical providers, including ancillary staff, were educated on the EMR order sets to improve compliance by using automated order sets in the EMR. The CR referral order in the EMR included a statement regarding the application of evidence-based medicine, and a computerized provider order entry was included as a reminder to the ordering provider. The use of EMR was monitored monthly by the QI committee. Chi-square test and odds ratios were obtained for statistical analysis. Results Through provider-EMR education and patient education on discharge, CR referral rates significantly improved from 51.2 to 87.1% (p = 0.0001) in a 12-month period. The study included 1,499 patients in total. The improvement was statistically significant regardless of patient gender, race, or insurance coverage. Additionally, subgroup analysis in this study found that prior to standardization of the ordering process, African American patients were significantly less likely to be referred to CR compared to Caucasian patients. (51.2% vs. 41.0%, p=0.01). There was no statistically significant difference in the likelihood of CR referral between Caucasian and African American patients following the intervention (84.0% vs. 78.0%, p = 0.166). Conclusion This study shows that CR is an underutilized resource and that effective QI initiatives may not only increase CR referral rates but also close the gap between racial inequities in referral rates. Future research with multi-center randomized control trials is needed to further enhance its external generalizability to other institutions.

Sex Differences in Cardiac Rehabilitation Adherence: A Meta-analysis

BACKGROUND

Cardiac rehabilitation (CR) participation is associated with significantly lower mortality, and this benefit has been established as dose-dependent. Because it has been suggested that women are adherent to CR programs less than men, the objective of this study was to review CR adherence among women and men, and to determine whether a sex difference exists.

METHODS

MedLine, CINAHL, EMBASE, PsycINFO, and the Cochrane databases were systematically searched. Titles and abstracts were screened, and selected full-text articles were independently considered on the basis of predefined inclusion/exclusion criteria. Data from included articles were extracted by 2 authors independently and assessed for quality. The meta-analysis was undertaken with predefined subgroup analyses.

RESULTS

The search identified 5148 articles, of which 149 were fully examined for inclusion consideration. Fourteen studies reporting data on 8176 participants (2234 [27.3%] women) were included. Overall, CR adherence ranged from 36.7% to 84.6% of sessions, with a mean of 66.5 ± 18.2% (median, 72.5%). Men and women enrolled in CR adhered to 68.6% and 64.2% of prescribed sessions, respectively (mean difference = -3.6; 95% confidence interval, -6.9 to -0.3). The sex difference persisted in studies of high quality, that were undertaken in Canada, published since 2010, and where programs were longer than 12 weeks' duration and offered fewer than 3 sessions per week.

CONCLUSIONS

To our knowledge, this is the first meta-analysis to systematically report CR adherence rates, and results suggest that patients adhere to more than two-thirds of prescribed sessions. CR adherence is significantly lower among women than men. Identified strategies to promote adherence need to be tested among women.

Using Visual Methods to Understand Physical Activity Maintenance following Cardiac Rehabilitation

Few studies have explored the factors associated with long-term maintenance of exercise following cardiac rehabilitation. The present study used auto-photography and interviews to explore the factors that influence motivation and continued participation in physical activity among post cardiac rehabilitation patients. Twenty-three semi-structured interviews were conducted alongside participant-selected photographs or drawings with participants that had continued participation in physical activity for at least two years following the cardiac rehabilitation programme. Participants were recruited from circuit training classes in East Sussex in the UK. Thematic content analysis revealed seven main themes: fear of death and ill health avoidance, critical incidents, overcoming aging, social influences, being able to enjoy life, provision of routine and structure, enjoyment and psychological well-being. Fear of death, illness avoidance, overcoming aging, and being able to enjoy life were powerful motives for continued participation in exercise. The social nature of the exercise class was also identified as a key facilitator of continued participation. Group-based exercise suited those that continued exercise participation post cardiac rehabilitation and fostered adherence.

Education of Physicians and Implementation of a Formal Referral System Can Improve Cardiac Rehabilitation Referral and Participation Rates after Percutaneous Coronary Intervention

BACKGROUND

Cardiac rehabilitation (CR) is an effective preventive measure that remains underutilised in the United States. The study aimed to determine the CR referral rate (RR) after percutaneous coronary intervention (PCI) at an academic tertiary care centre, identify barriers to referral, and evaluate awareness of CR benefits and indications (CRBI) among cardiologists. Subsequently, it aimed to evaluate if an intervention consisting of physicians' education about CRBI and implementation of a formal CR referral system could improve RR and consequently participation rate (PR).

METHODS

Data were retrospectively collected for all consecutive patients who underwent PCI over 12 months. Referral rate was determined and variables were compared for differences between referred and non-referred patients. A questionnaire was distributed among the physicians in the Division of Cardiology to assess awareness of CRBI and referral practice patterns. After implementation of the intervention, data were collected retrospectively for consecutive patients who underwent PCI in the following six months. Referral rate and changes in PRs were determined.

RESULTS

Prior to the intervention, RR was 17.6%. Different barriers were identified, but the questionnaire revealed lack of physicians' awareness of CRBI and inconsistent referral patterns. After the intervention, RR increased to 88.96% (Odds Ratio 37.73, 95% CI 21.34-66.70, p<0.0001) and PR increased by 32.8% to reach 26%. Personal endorsement of CRBI by cardiologists known to patients increased CR program graduation rate by 35%.

CONCLUSIONS

Cardiologists' awareness of CRBI increases CR RR and their personal endorsement improves PR and compliance. Education of providers and implementation of a formal referral system can improve RR and PR.

Participating in cardiac rehabilitation: a systematic review and meta-synthesis of qualitative data

BACKGROUND

Participation in cardiac rehabilitation (CR) benefits patients with coronary heart disease (CHD), yet worldwide only some 15–30% of those eligible attend. To improve understanding of the reasons for poor participation we undertook a systematic review and meta-synthesis of the qualitative literature.

METHODS

Qualitative studies identifying patient barriers and enablers to attendance at CR were identified by searching multiple electronic databases, reference lists, relevant conference lists, grey literature, and keyword searching of the Internet (1990–2010). Studies were selected if they included patients with CHD and reviewed experience or understanding about CR. Meta-synthesis was used to review the papers and to synthesize the data.

RESULTS

From 1165 papers, 34 unique studies were included after screening. These included 1213 patients from eight countries. Study methodology included interviews (n = 25), focus groups (n = 5), and mixed-methods (n = 4). Key reasons for not attending CR were physical barriers, such as lack of transport, or financial cost, and personal barriers, such as embarrassment about participation, or misunderstanding the reasons for onset of CHD or the purpose of CR.

CONCLUSIONS

There is a vast amount of qualitative research which investigates patients’ reasons for non-attendance at CR. Key issues include system-level and patient-level barriers, which are potentially modifiable. Future research would best be directed at investigating strategies to overcome these barriers.

Clinical research in cardiac rehabilitation and secondary prevention: looking back and moving forward

Cardiac rehabilitation/secondary prevention (CR/SP) programs are considered standard of care and provide critically important resources for optimizing the care of cardiac patients. The objective of this article is to briefly review the evolution of CR/SP programs from a singular exercise intervention to its current, more comprehensive multifaceted approach. In addition, we offer perspective on critical concerns and suggest future research considerations to optimize the effectiveness and utilization of CR/SP program interventions.

Trends and disparities in referral to cardiac rehabilitation after percutaneous coronary intervention

BACKGROUND

Despite the known benefits of cardiac rehabilitation in patients with coronary artery disease, referral rates to rehabilitation programs remain low. We determined the incidence and determinants of cardiac rehabilitation referral rates for patients undergoing percutaneous coronary intervention (PCI).

METHODS AND RESULTS

The incidence and predictors of referral to cardiac rehabilitation were assessed among 145,661 consecutive patients undergoing PCI and surviving to hospital discharge across 31 hospitals in the Blue Cross Blue Shield of Michigan Cardiovascular Consortium between 2003 and 2008. The 6-year cardiac rehabilitation referral rate was 60.2%. Younger age, male gender, white race, and presentation with acute or severe disease (ie, acute myocardial infarction [AMI] in the previous 24 hours and ST-elevation myocardial infarction) were associated with increased referral to rehabilitation (all P < .0001). Most medical comorbidities were associated with decreased referral. Referral rates for cardiac rehabilitation were below the rates of other AMI quality-of-care indicators and more variable across hospital sites. Race-specific referral rates differed significantly in the lowest referring hospitals (P < .0001) but not in the highest referring hospitals (P = .16). Women had a 0.7% relative decrease in referral as compared to men (P = .0188) in the highest referring hospitals but a 26.7% relative decrease in referral in the lowest referring hospitals (P = .02).

CONCLUSIONS

Over one third of patients undergoing PCI are not referred for cardiac rehabilitation. Referral rates are below the rates of other AMI quality-of-care performance measures and more variable across sites. Racial and gender disparities in referral to rehabilitation exist but are concentrated at the lowest referring hospitals.

Poor use of cardiac rehabilitation among older adults: a self-regulatory model for tailored interventions

BACKGROUND

A greater number of older adults now live with coronary heart disease (CHD). This poses a significant public health problem, because older adults are at high risk for CHD-related mortality and morbidity. Overwhelming data support the benefits of cardiac rehabilitation for secondary prevention, yet only a small portion of eligible older adults receive it.

METHODS AND RESULTS

Whereas many studies examined factors that affect the use of cardiac rehabilitation among older adults, few interventions aimed to improve their cardiac rehabilitation participation rates. A substantial body of evidence indicates that an individual's illness perceptions play a pivotal role in health behavior, and may be a promising target for intervention. Drawing from the theoretic and empiric findings of others, a self-regulatory model is proposed that explicates how CHD perceptions of older adults may influence participation in cardiac rehabilitation.

CONCLUSION

The model may provide a useful guide for the development of effective interventions tailored to older adults.

Effects of cardiac rehabilitation referral strategies on referral and enrollment rates

Despite recommendations in clinical practice guidelines, evidence suggests that utilization of cardiac rehabilitation (CR) following indicated cardiac events is low. Referral strategies, such as automatic referral, have been advocated to improve CR utilization. In this Review, we evaluate the effects of referral strategies on rates of CR referral and enrollment. Referral strategies are categorized as 'automatic' (the use of electronic health records or systematic discharge order sets), as 'liaison' (discussions with allied health-care providers), or as 'other' (for example, the use of motivational letter to patients). The highest rates of CR referral have been achieved in studies implementing automatic referral orders, whereas the highest rates of CR enrollment have resulted from a combination of automatic and liaison methods. Overall, innovative referral strategies significantly increase CR utilization. While further investigation is needed, institutions should evaluate their CR referral practice in light of these findings.

Predictors of cardiac rehabilitation referral in coronary artery disease patients: findings from the American Heart Association's Get With The Guidelines Program

OBJECTIVES

Our purpose was to determine factors independently associated with cardiac rehabilitation referral, which are currently not well described at a national level.

BACKGROUND

Substantial numbers of eligible patients are not referred to cardiac rehabilitation at hospital discharge despite proven reductions in mortality and national guideline recommendations.

METHODS

We used data from the American Heart Association's Get With The Guidelines program, analyzing 72,817 patients discharged alive after a myocardial infarction, percutaneous coronary intervention, or coronary artery bypass graft surgery between January 2000 and September 2007 from 156 hospitals. We identified factors associated with cardiac rehabilitation referral at discharge and performed multivariable logistic regression, adjusted for clustering, to identify which factors were independently associated with cardiac rehabilitation referral.

RESULTS

Mean age was 64.1 +/- 13.0 years, 68% were men, 79% were white, and 30% had diabetes, 66% hypertension, and 52% dyslipidemia; mean body mass index was 29.1 +/- 6.3 kg/m(2), and mean ejection fraction 49.0 +/- 13.6%. All patients were admitted for coronary artery disease (CAD), with 71% admitted for myocardial infarction. Overall, only 40,974 (56%) were referred to cardiac rehabilitation at discharge, ranging from 53% for myocardial infarction to 58% for percutaneous coronary intervention and to 74% for coronary artery bypass graft patients. Older age, non-ST-segment elevation myocardial infarction, and the presence of most comorbidities were associated with decreased odds of cardiac rehabilitation referral.

CONCLUSIONS

Despite strong evidence for benefit, only 56% of eligible CAD patients discharged from these hospitals were referred to cardiac rehabilitation. Increased physician awareness about the benefits of cardiac rehabilitation and initiatives to overcome barriers to referral are critical to improve the quality of care of patients with CAD.

Examining the challenges of recruiting women into a cardiac rehabilitation clinical trial

PURPOSE

To examine the challenges of recruiting women for a 5-year cardiac rehabilitation randomized clinical trial; the aims of the study were to describe the range of recruitment sources, examine the myriad of factors contributing to ineligibility and nonparticipation of women during protocol screening, and discuss the challenges of enrolling women in the trial.

METHODS

The Women's-Only Phase II Cardiac Rehabilitation program used an experimental design with 2 treatment groups. Eligible participants included women who were (1) diagnosed with a myocardial infarction or stable angina or had undergone coronary revascularization within the last 12 months; (2) able to read, write, and speak English; and (3) older than 21 years. Responses to multiple recruitment strategies including automatic hospital referrals, physician office referrals, mass mailings, media advertisements, and community outreach are described. Reasons for ineligibility and nonparticipation in the trial are explored.

RESULTS

Automatic hospital order was the largest source of referral (n = 1,367, 81%) accounting for the highest enrollment rate of women (n = 184, 73%). The barriers to enrollment into the cardiac rehabilitation clinical trial included patient-oriented, provider-oriented, and programmatic factors. Of the referral sources, 52% were screened ineligible for provider-oriented reasons, 31% were ineligible due to patient-oriented factors, and 17.4% were linked to the study protocol. Study nonparticipation of those eligible (73.8%) was largely associated with patient-oriented factors (65.2%), with far less due to provider-related factors (4%) or study-related factors (3.4%).

CONCLUSION

Standing hospital orders facilitated enrollment to the cardiac rehabilitation clinical trial, yet women failed to participate predominantly due to significant patient-oriented biopsychosocial barriers.

Appropriate secondary prevention of acute atherothrombotic events and strategies to improve guideline adherence

The use of guideline-recommended secondary prevention measures is essential for reducing the risk of subsequent events and mortality in patients who have survived an acute atherothrombotic event or have peripheral arterial disease. Although initial hospitalization provides an ideal environment to initiate such therapies, implementation of effective longterm prevention strategies is hindered by the absence of a systematic approach. In general, evidence-based clinical practice guidelines recommend antiplatelet therapy as a cornerstone of post-discharge secondary prevention, in addition to preventive measures targeting risk factors such as hypertension, dyslipidemia, cigarette smoking, and physical inactivity. Observational data indicate that, although there has been improvement over time, current utilization of guideline-recommended post-discharge treatment remains suboptimal. Recognizing the importance of a systematic approach to discharge planning, numerous hospital-based initiatives have been established. In conjunction with effective lines of communication between hospital and primary care teams, initiation of the most effective secondary prevention strategy at the time of hospital discharge will help to ensure optimal long-term management of patients after an atherothrombotic event.

Exercise-based cardiac rehabilitation for very old patients (> or =75 years): focus on physical function

Older patients have high rates of physical function impairment and disability following a cardiac event. Exercise training has been shown to favorably affect such limitations, as well as cardiovascular risk factors, symptoms, and mortality post coronary event in middle-aged patients. Aerobic capacity, body strength, quality of life, and physical function are improved with exercise-based cardiac rehabilitation (CR) in patients older than 65 years. However, there have been relatively few studies of the effects of exercise-based CR on physical function recovery in the very old patients (> or =75 years), despite the continuous growth of this segment of the population. After hospitalization for a cardiac event, postacute inpatient CR serves as a bridge between acute care and independent home living for the most disabled older patients. It plays an important role in the physical recovery process, particularly after cardiac surgery. Exercise-based outpatient (phase II) CR, starting early after hospital discharge, is safe in very old patients and studies demonstrate that these patients derive similar benefits from CR, compared with younger patients, regarding physical function improvement. Older patients, however, are less likely than younger cardiac patients to participate in outpatient CR programs. There is a need to find protocols that could increase the referral and participation rates of the frailer and older cardiac patient to exercise-based CR.

Effect of an American Heart Association Get With the Guidelines program-based clinical pathway on referral and enrollment into cardiac rehabilitation after acute myocardial infarction

Cardiac rehabilitation (CR)/secondary prevention programs are an important part of patient care after acute myocardial infarction (AMI). However, only 10% to 15% of eligible patients enroll in such programs. The purpose of this study was to evaluate the effect of an American Heart Association Get With the Guidelines (GWTG)-based clinical pathway on referral and enrollment into CR after AMI. Patients (n = 780) admitted to a single center during an 18-month period with AMI and discharged to home were evaluated retrospectively for referral and enrollment into CR programs. A total of 714 patients (92%) were on the GWTG pathway; 392 (55%) were referred and 135 (19%) were enrolled into CR. Higher referral was associated with pathway use (odds ratio [OR] 2.3, 95% confidence interval [CI] 1.1 to 4.9, p = 0.03), percutaneous coronary intervention (OR 3.1, 95% CI 1.9 to 5.2, p <0.0001), and in-patient physical therapy consultation (OR 13, 95% CI 8.2 to 20.5, p <0.0001). Ethnicity did not affect referral, but was the only variable associated with lower enrollment. Hispanic and black patients had 92% (OR 0.08, 95% CI 0.01 to 0.55, p = 0.02) and 57% (OR 0.43, 95% CI 0.19 to 1.05, p = 0.06) lower odds to enroll compared with white patients, respectively. In conclusion, use of the American Heart Association GWTG pathway showed a significantly higher referral rate to CR after AMI than previously reported in the literature. Nonetheless, most referred patients did not enroll. Strategies to bridge the gap between referral and enrollment in CR should be incorporated into AMI clinical pathways, with special emphasis on increasing enrollment in ethnic minorities.

Adverse baseline physiological and psychosocial profiles of women enrolled in a cardiac rehabilitation clinical trial

PURPOSE

Coronary heart disease (CHD) remains the leading cause of death in women. Despite positive outcomes associated with cardiac rehabilitation (CR), investigations of women are sparse. This article presents the baseline physiological and psychosocial profiles of 182 women in the Women's-Only Cardiac Rehabilitation study.

METHOD

Women were randomized to a women's-only motivational interviewing or traditional CR group. Physiological measures included lipid profiles, body mass index, functional capacity, and anthropomorphic measures. Psychosocial measures included optimism, hope, social support, anxiety, depression, quality of life, and health perceptions. The median age was used to split the sample to examine data on 92 younger (< or = 64 years) and 90 older (>64 years) women.

RESULTS

With a mean age of 63 years, 66.5% were white, 47% were retired, and 54% were married. Most women were physically inactive (83%), hypertensive (76%), and overweight (56%). Most women (71.4%) met the criteria for metabolic syndrome. Younger women demonstrated significantly worse psychosocial profiles than older women. More of the younger women (64%) had depressive symptoms than older women (37%). Younger women demonstrated a mean Center for Epidemiological Studies Depression Scale score of 20.8 +/- 12.4, whereas older women had a substantially lower mean score of 14.9 +/- 9.5 (P < .001). Younger participants also reported significantly more anxiety than older participants (38.8 +/- 13.4 vs 32.8 +/- 10.6, P < .001).

CONCLUSION

Younger women enrolled in a CR clinical trial had adverse baseline risk factor profiles placing them at high risk for disease progression.

A prospective comparison of cardiac rehabilitation enrollment following automatic vs usual referral

OBJECTIVE

Cardiac rehabilitation remains grossly under-utilized despite its proven benefits. This study prospectively compared verified cardiac rehabilitation enrollment following automatic vs usual referral, postulating that automatic referral would result in significantly greater enrollment for cardiac rehabilitation.

DESIGN

Prospective controlled multi-center study.

PATIENTS AND METHODS

A consecutive sample of 661 patients with acute coronary syndrome treated at 2 acute care centers (75% response rate) were recruited, one site with automatic referral via a computerized prompt and the other with a usual referral strategy at the physician's discretion. Cardiac rehabilitation referral was discerned in a mailed survey 9 months later (n = 506; 84% retention), and verified with 24 cardiac rehabilitation sites to which participants were referred.

RESULTS

A total of 124 (52%) participants enrolled in cardiac rehabilitation following automatic referral, vs 84 (32%) following usual referral (p < 0.001). Automatically referred participants were more likely to be referred from an in- patient unit (p < 0.01), and to be referred in a shorter time period (p < 0.001). Logistic regression analyses revealed that, after controlling for sociodemographic characteristics and case-mix, automatically referred participants were significantly more likely to enroll in cardiac rehabilitation (odds ratio = 2.1; 95% confidence interval 1.4-3.3) than controls.

CONCLUSION

Automatic referral resulted in over 50% verified cardiac rehabilitation enrollment; 2 times more than usual referral. It also significantly reduced utilization delays to less than one month.

Universal access: but when? Treating the right patient at the right time: access to cardiac rehabilitation

The Canadian Cardiovascular Society formed an Access to Care Working Group ('Working Group') in the spring of 2004. The mandate of the group was to use the best science and information to establish reasonable triage categories and safe wait times for access to common cardiovascular services and procedures. The present commentary presents the rationale for benchmarks for cardiac rehabilitation (CR) services. The Working Group's search for evidence included: a full literature review of the efficacy of CR, and the factors affecting access and referral to CR; a review of existing guidelines for access to CR; and a national survey of 14 CR programs across Canada undertaken in May 2005 to solicit information on referral to, and wait times for, CR. The Working Group also reviewed the results of The Ontario Cardiac Rehabilitation Pilot Project (2002) undertaken by the Cardiac Care Network of Ontario, which reported the average and median wait times for CR. Some international agencies have formulated their own guidelines relating to the optimal wait time for the onset of CR. However, due to the limited amount of supporting literature, these guidelines have generally been formed as consensus statements. The Canadian national survey showed that few programs had guidelines for individual programs. The Cardiac Care Network of Ontario pilot project reported that the average and median times from a cardiac event to the intake into CR were 99 and 70 days, respectively. The national survey of sampled CR programs also revealed quite remarkable differences across programs in terms of the length of time between first contact to first attendance and to commencement of exercise. Programs that required a stress test before program initiation had the longest wait for exercise initiation. Some patients need to be seen within a very short time frame to prevent a marked deterioration in their medical or psychological state. In some cases, early intervention and advocacy may reduce the risk of loss of employment. Or, there may be profound disturbances in the patient's family as a result of the cardiac event. For other patient groups, preferable wait times vary from one to 30 days, and acceptable wait times vary from seven to 60 days. All cardiovascular disease patients require core aspects of CR services. Patients who would derive benefit from formal CR programs should be provided the opportunity, given the proven efficacy and cost effectiveness of CR.

Hospital discharge treatments after an acute event: evidence for a systems approach to prevention

Hospitalization and rehospitalization for acute coronary syndromes significantly contribute to the rising annual cost of healthcare. Despite growing evidence of the effectiveness of early and aggressive treatment of cardiovascular risk factors at the time of an acute event, eligible individuals are still not receiving adequate therapy. Inclusion of appropriate coronary artery disease treatments including lipid-lowering therapy at the time of hospitalization can lead to increased long-term compliance and reduced morbidity and mortality.

Referral to and discharge from cardiac rehabilitation: key informant views on continuity of care

OBJECTIVES

To assess the system-level barriers and facilitators of continuity of care from acute care to cardiac rehabilitation (CR), and from CR discharge to follow-up with primary health care providers.

METHOD

Semi-structured individual interviews with 24 key informants including CR staff, research scientists, policy makers, cardiologists and other doctors from a regional to international level were conducted regarding the processes of referral to and discharge from cardiac rehabilitation. Key informant interviews were audio taped, transcribed, and imported into QSR N6 software for Grounded analysis.

RESULTS

Themes that emerged related to communication, referral and discharge processes, health care provider practices, inter- and intra-institutional relationships, and alternative models of delivery to improve continuity.

CONCLUSIONS

Ramifications for enhancing referral of patients to beneficial CR services and follow-up by primary care providers to ensure maintenance of functional and health-related gains are discussed.

A Behavior Change Intervention for Women in Cardiac Rehabilitation

There is undeniable evidence for physical and psychosocial benefits of cardiac rehabilitation programs for individuals suffering from coronary heart disease. Yet, fewer women than men are referred to, begin, or complete cardiac rehabilitation programs. The numerous logistical, economic, and motivational barriers to healthy behavior change place women at risk for subsequent CHD events. To close this gender gap and improve outcomes, novel, efficacious, and individualized rehabilitative approaches for women with coronary heart disease are needed. The purpose of this article is to describe a theory-driven behavioral intervention designed exclusively for women with coronary heart disease. The 12-week intervention is being tested in a randomized controlled trial involving women referred to a cardiac rehabilitation program. The tenets of the Transtheoretical Model of behavior change and motivational interviewing guided the development and implementation of the stage-matched, individualized intervention to promote healthy behavior change for women with coronary heart disease. The ongoing trial will examine the efficacy of the intervention on physiological and psychosocial outcomes.

Determinants of referral to cardiac rehabilitation programs in patients with coronary artery disease: a systematic review

BACKGROUND

Despite the documented efficacy of cardiac rehabilitation (CR), a minority of patients with diagnosed coronary artery disease are referred. Although referral is a necessary step in the promotion of CR uptake, little is known about its determinants.

PURPOSE

The objective of this paper was to systematically review the available literature on factors predicting referral of patients to CR to appraise both their relative impact and consistency across studies.

METHODS

Studies were identified by searching MEDLINE (1966-2003), CINAHL (1982-2003), HealthSTAR (1975-2003), EMBASE (1966-2003), and The Cochrane Library Controlled Trials. Search terms were "myocardial infarction," "acute myocardial infarction," "coronary artery disease," combined with "rehabilitation," "cardiac rehabilitation," "secondary prevention," "exercise training," "referral," and/or "consultation." Forty-five studies were identified and independently assessed by 2 reviewers using predetermined eligibility criteria.

RESULTS

Ten published observational studies (1999-2004) including 30,333 coronary artery disease patients were selected. Determinants of referral to CR were grouped as sociodemographic, health status, and health care system factors. Major predictors were English speaking (RR 9.56, 95% CI 2.18-41.93), prior myocardial infarction (RR 2.73, 95% CI 1.69-4.42), being admitted to hospitals providing CR (RR 5.35, 95% CI 4.04-7.10), and having insurance coverage (RR 2.94, 95% CI 1.13-7.66).

CONCLUSION

This review highlights disparities in referral to CR and reveals a treatment gap in the secondary prevention of cardiovascular disease. Precise estimates of the impact of all factors on referral are not possible, but some hierarchies and potential priorities for action are evident.