Purpose: Heart rate (HR)-derived variables (HR reserve [HRpeak - HRrest], chronotropic indices [attenuated HR response to exercise], HR recovery [attenuated HR response to exercise recovery], and peak HR index [HRpeak/HRrest]) together with peak oxygen uptake (VO2peak) are potential prognostic variables for cardiovascular and all-cause mortality. However, heart rate index (HRI) has not been established as a surrogate for VO2peak, whether measured (Meas) or estimated (Est), during cycle ergometry (CE) and/or treadmill testing (TT). Methods: HR-derived prognostic variables to assess cardiovascular outcomes were identified from 150 studies obtained from MEDLINE and Google Scholar searches. The Meas CE/TT-VO2peak was reported in 81 studies (21 773 participants) and Est CE/TT-VO2peak in 69 studies (331 435 participants). Using the HRI equation with metabolic equivalent (METs) = 6 x HRI - 5 (where HRI = peak HR/resting HR), HRI-VO2peak was calculated from HR data reported in the 150 studies. The HRI-VO2peak was then compared against group mean data for both Meas CE/TT-VO2peak and Est CE/TT-VO2peak. Results: The difference between Meas CE/TT-VO2peak and HRI-VO2peak was 1% (7.15 +/- 3.25 METs vs 7.08 +/- 3.02 METs [P = .833], respectively). By comparison, the difference between Est CE/TT-VO2peak and HRI-VO2peak was 25.6% (8.94 +/- 2.36 METs vs 7.12 +/- 2.27 METs [P < .001], respectively). Moreover, HRI equation estimation of VO2peak showed greater overprediction for TT, 26.6%, than for CE, 11.9%. Conclusions: The Meas-VO2peak and HRI-VO2peak agreed closely. When compared with HRI-VO2peak, Est-VO2peak from currently used exercise-based equations shows significant overprediction. Use of HRI and/or Fitness Registry and the Importance of Exercise National Database (FRIEND) registry equations warrant consideration for more accurately estimating VO2peak.

Summary Background: There is a relationship between physical activity and health-related quality of life (HRQL) in healthy people and in patients with ischemic heart disease (IHD). The purpose of this study was to determine whether this relationship between sports or recreational physical activity levels and HRQL has a dose-response gradient in patients with IHD. Methods: Using one generic and three IHD-specific HRQL questionnaires, differences in HRQL scores (adjusted for confounders) were determined for physically a) inactive vs. active patients and b) inactive vs. patients being active 1–2, 3–5, or >5 times per week. Results: Data were provided by 6143 IHD-patients (angina: N = 2033; myocardial infarction: N = 2266; ischemic heart failure: N = 1844). Regardless of diagnosis or instrument used, when patients were dichotomized as either inactive or active, the latter reported throughout higher physical and emotional HRQL (all p < 0.001; d = 0.25–0.70). When categorized by physical activity levels, there was a positive HRQL dose-response gradient by increasing levels of physical activity that was most marked between inactive patients and those being active 1–2 times per week (63 82%). Conclusions: Using generic and IHD-specific HRQL questionnaires, there seems to be an overall dose-dependent gradient betweenincreasing levels of sports or recreational physical activity and higher HRQL in patients with angina, myocardial infarction, and ischemic heart failure. The greatest bang for the public health buck still lies on putting all the effort in changing sedentary lifestyle to at least a moderate active one (1–2 times per week), in particular in cardiac rehabilitation settings.

Background Health-related quality of life (HRQoL) reflects an individual’s own perception of their symptom burden, functional limitations, prognosis, overall health and changes associated with treatment. The HeartQoL is a validated heart disease-specific questionnaire with a physical and an emotional subscale that is used internationally to assess HRQoL in patients with coronary heart disease (CHD). The aim of this study was to translate and evaluate the psychometric properties of the HeartQoL in patients with CHD in Iceland. Methods Patients ≥ 18 years (n = 396; mean age 64.4 ± 8.8 years; 79.6% male) admitted with CHD were recruited from two hospitals in Iceland and completed the Icelandic versions of the HeartQoL, Short-Form 12v2 Health Survey (SF-12v2), and Hospital Anxiety and Depression Scale (HADS). A subsample of 47 patients completed the HeartQoL 14 days later. Confirmatory factor analysis for ordinal data was used to evaluate the measurement model with a physical and an emotional subscale. Convergent and divergent validity, internal consistency, and test-retest reliability were evaluated. Results Overall, the hypothesized two-factor structure of the Icelandic version of the HeartQoL was supported. However, problems with cross-loadings and correlated error variances were identified. Convergent and divergent validity were supported in correlational analyses between HeartQoL, SF-12v2, and HADS. Internal consistency reliability, measured by ordinal alpha, was good for the physical ( α = 0.96) and emotional ( α = 0.90) subscale. According to intraclass correlations (ICC), acceptable test-retest reliability was demonstrated (ICC = 0.79–0.86). Conclusion With the two-factor structure confirmed, the Icelandic HeartQoL demonstrated satisfactory psychometric properties in the sample of patients with CHD. Users of the instrument can use the original scoring.

BACKGROUND:The burden of coronary heart disease (CHD) worldwide is one of great concern to patients and healthcare agencies alike. Exercise-based cardiac rehabilitation aims to restore patients with heart disease to health. OBJECTIVES:To determine the effectiveness of exercise-based cardiac rehabilitation (exercise training alone or in combination with psychosocial or educational interventions) on mortality, morbidity and health-related quality of life of patients with CHD. SEARCH STRATEGY:RCTs have been identified by searching CENTRAL, HTA, and DARE (using The Cochrane Library Issue 4, 2009), as well as MEDLINE (1950 to December 2009), EMBASE (1980 to December 2009), CINAHL (1982 to December 2009), and Science Citation Index Expanded (1900 to December 2009). SELECTION CRITERIA:Men and women of all ages who have had myocardial infarction (MI), coronary artery bypass graft (CABG) or percutaneous transluminal coronary angioplasty (PTCA), or who have angina pectoris or coronary artery disease defined by angiography. DATA COLLECTION AND ANALYSIS:Studies were selected and data extracted independently by two reviewers. Authors were contacted where possible to obtain missing information. MAIN RESULTS:This systematic review has allowed analysis of 47 studies randomising 10,794 patients to exercise-based cardiac rehabilitation or usual care. In medium to longer term (i.e. 12 or more months follow-up) exercise-based cardiac rehabilitation reduced overall and cardiovascular mortality [RR 0.87 (95% CI 0.75, 0.99) and 0.74 (95% CI 0.63, 0.87), respectively], and hospital admissions [RR 0.69 (95% CI 0.51, 0.93)] in the shorter term (< 12 months follow-up) with no evidence of heterogeneity of effect across trials. Cardiac rehabilitation did not reduce the risk of total MI, CABG or PTCA. Given both the heterogeneity in outcome measures and methods of reporting findings, a meta-analysis was not undertaken for health-related quality of life. In seven out of 10 trials reporting health-related quality of life using validated measures was there evidence of a significantly higher level of quality of life with exercise-based cardiac rehabilitation than usual care. AUTHORS' CONCLUSIONS:Exercise-based cardiac rehabilitation is effective in reducing total and cardiovascular mortality (in medium to longer term studies) and hospital admissions (in shorter term studies) but not total MI or revascularisation (CABG or PTCA). Despite inclusion of more recent trials, the population studied in this review is still predominantly male, middle aged and low risk. Therefore, well-designed, and adequately reported RCTs in groups of CHD patients more representative of usual clinical practice are still needed. These trials should include validated health-related quality of life outcome measures, need to explicitly report clinical events including hospital admission, and assess costs and cost-effectiveness.

Universal healthcare goals include helping patients to live longer and better, that is, to optimize both survival and health. Both, the European Society of Cardiology ESC1 and the American Heart Association2) have recognized that they have an unique opportunity to advance initiatives aimed at increasing the prominence of patient-reported outcomes in cardiovascular research and translating findings into clinical practice. Patient health status includes three components: symptom burden, functional status, and health-related quality of life (HRQL). Symptom burden includes the types and frequency of symptoms a patient may have as a manifestation of disease or from medical treatment (e.g. symptoms from side-effects of medications). Functional status includes physical, mental/emotional, and social function. Health-related quality of life is the patient’s perception of discrepancy between actual and desired functional status and overall impact of disease on well-being for a given patient3 and is typically measured using one or both...

OBJECTIVES:This study evaluated the psychometric properties of the Mandarin version of the HeartQoL questionnaire, a core ischemic heart disease (IHD) health-related quality of life (HRQL) instrument, in patients with angina, myocardial infarction (MI), and ischemic heart failure (IHF).METHODS:The English version of HeartQoL was translated into Mandarin. A cross-sectional study was then conducted in mainland China using the Mandarin HeartQoL, Short Form-12 Health Survey, and Hospital Anxiety and Depression Scale. Factor analysis was used to establish the HeartQoL structure and internal consistency reliability and construct validity were assessed.RESULTS:Patients with IHD (n = 412; angina = 112, MI = 151, and IHF = 149) were enrolled. Significantly higher HeartQoL HRQL scores were reported by patients with either angina or MI than by patients with IHF. The 2-factor structure was confirmed by Mokken scale analysis in the total group with strong H coefficients on the global scale (0.64) and both the physical (0.70) and emotional (0.80) subscales. Internal consistency reliability was strong with Cronbach's α ranging from 0.90 to 0.95. Convergent validity was confirmed with strong correlations between similar physical and mental HeartQoL and Short Form-12 Health Survey subscales ranging from 0.77 to 0.82 with divergent validity confirmed with significantly lower correlations between dissimilar constructs. Discriminative validity was confirmed for 72% of the a priori sociodemographic and clinical hypotheses.CONCLUSIONS:The Mandarin version of the HeartQoL HRQL questionnaire demonstrates acceptable internal consistency reliability and convergent, divergent, and discriminative validity in patients with IHD and in each diagnostic subgroup. The data support the use of the HeartQoL to assess and compare HRQL in Mandarin-speaking patients with IHD.

BACKGROUND Although recommended in guidelines for the management of coronary heart disease (CHD), concerns have been raised about the applicability of evidence from existing meta-analyses of exercise-based cardiac rehabilitation (CR).OBJECTIVES The goal of this study is to update the Cochrane systematic review and meta-analysis of exercise-based CR for CHD.METHODS The Cochrane Central Register of Controlled Trials, MEDLINE, EMBASE, CINAHL, and Science Citation Index Expanded were searched to July 2014. Retrieved papers, systematic reviews, and trial registries were hand-searched. We included randomized controlled trials with at least 6 months of follow-up, comparing CR to no-exercise controls following myocardial infarction or revascularization, or with a diagnosis of angina pectoris or CHD defined by angiography. Two authors screened titles for inclusion, extracted data, and assessed risk of bias. Studies were pooled using random effects meta-analysis, and stratified analyses were undertaken to examine potential treatment effect modifiers.RESULTS A total of 63 studies with 14,486 participants with median follow-up of 12 months were included. Overall, CR led to a reduction in cardiovascular mortality (relative risk: 0.74; 95% confidence interval: 0.64 to 0.86) and the risk of hospital admissions (relative risk: 0.82; 95% confidence interval: 0.70 to 0.96). There was no significant effect on total mortality, myocardial infarction, or revascularization. The majority of studies (14 of 20) showed higher levels of health-related quality of life in 1 or more domains following exercise-based CR compared with control subjects.CONCLUSIONS This study confirms that exercise-based CR reduces cardiovascular mortality and provides important data showing reductions in hospital admissions and improvements in quality of life. These benefits appear to be consistent across patients and intervention types and were independent of study quality, setting, and publication date. (C) 2016 by the American College of Cardiology Foundation.

The psychometric properties of the core disease-specific 14-item Italian HeartQoL health-related quality of life questionnaire have been evaluated in this study. The Italian version of the HeartQoL, the MacNew questionnaire, and the Hospital Anxiety and Depression Scale were completed by 472 patients (angina, N = 183; myocardial infarction, N = 167; or ischemic heart failure, N = 122) who were recruited in five Italian centers (Florence, Veruno, Turin, Udine, and Naples) between 2015 and 2017. Patients with myocardial infarction reported significantly higher HeartQoL scores than patients with angina or ischemic heart failure. Floor and ceiling effects were always minor on the HeartQoL global scale and physical subscale with moderate ceiling effects on the emotional subscale in the total group and in patients with myocardial infarction. The bifactorial structure of the original HeartQoL questionnaire was confirmed with strong physical, emotional, and global scale H coefficients (> 0.50). The HeartQoL scales demonstrated optimal internal consistency (Cronbach's alpha > 0.84). Convergent and divergent validity were confirmed. Discriminative validity was not confirmed for age, largely confirmed for sex, and fully confirmed for anxiety, depression, and distress. The Italian HeartQoL questionnaire demonstrated adequate key psychometric attributes of internal consistency reliability and validity in Italian-speaking patients with ischemic heart disease.

Aims Prescribed exercise is effective in adults with coronary heart disease (CHD), chronic heart failure (CHF), intermittent claudication, body mass index (BMI) ≥25 kg/m2, hypertension or type 2 diabetes mellitus (T2DM), but the evidence for its cost-effectiveness is limited, shows large variations and is partly contradictory. Using World Health Organization and American Heart Association/American College of Cardiology value for money thresholds, we report the cost-effectiveness of exercise therapy, exercise training and exercise-based cardiac rehabilitation. Methods Electronic databases were searched for incremental cost-effectiveness and incremental cost–utility ratios and/or the probability of cost-effectiveness of exercise prescribed as therapy in economic evaluations conducted alongside randomized controlled trials (RCTs) published between 1 July 2008 and 28 October 2018. Results Of 19 incremental cost–utility ratios reported in 15 RCTs in patients with CHD, CHF, intermittent claudication or BMI ≥25 kg/m2, 63% met both value for money thresholds as ‘highly cost-effective’ or ‘high value’, with 26% ‘not cost-effective’ or of ‘low value’. The probability of intervention cost-effectiveness ranged from 23 to 100%, probably due to the different populations, interventions and comparators reported in the individual RCTs. Confirmation with the Consolidated Health Economic Evaluation Reporting checklist varied widely across the included studies. Conclusions The findings of this review support the cost-effectiveness of exercise therapy in patients with CHD, CHF, BMI ≥25 kg/m2 or intermittent claudication, but, with concerns about reporting standards, need further confirmation. No eligible economic evaluation based on RCTs was identified in patients with hypertension or T2DM.

Purpose The aim of this study was to evaluate psychometric properties of the core disease-specific 14-item German HeartQoL questionnaire. Methods As an extension of the international HeartQol Project, cross-sectional and longitudinal health-related quality of life (HRQL) data were collected from 305 patients with angina (N = 101), myocardial infarction (N = 123), or ischemic heart failure (N = 81) in Austria and Switzerland using German versions of the HeartQoL, the Short Form-36 Health Survey (SF-36), and the Hospital Anxiety and Depression Scale. The underlying factor structure was examined with Mokken Scaling analysis; then convergent, divergent, and discriminative validity, internal consistency reliability, and responsiveness were assessed. Results The highest HRQL scores were reported by patients with myocardial infarction followed by ischemic heart failure and then angina. The two-factor structure was confirmed with strong physical, emotional, and global scale H coefficients (> .50). Divergent and convergent validity (from r = .04 to .78) were shown for each diagnosis; discriminative validity was verified as well (partially: age, sex, and disease severity; largely: SF-36 health status/transition; totally: anxiety and depression). Internal consistency reliability was excellent (Cronbach's alpha = .91). In terms of responsiveness, physical and global scale scores improved significantly after percutaneous coronary intervention (p < .01) while after cardiac rehabilitation all scale scores improved significantly (p < .001). Conclusions The German HeartQoL questionnaire is a valid and reliable HRQL instrument with these data supporting its potential use in clinical practice and research to assess and compare HRQL in German-speaking patients with ischemic heart disease. The shortness of the tool may prove to be helpful particularly in clinical practice.

Patient-reported health-related quality of life is a complementary healthcare outcome and important when assessing treatment efficacy. Using COSMIN methodological recommendations, this study evaluates the validity and reliability of a core heart disease-specific health-related quality of life questionnaire, the HeartQoL questionnaire (Danish version) in a sample of patients following heart valve surgery.

Purpose: Exercise-based cardiac rehabilitation improves physical performance and health-related quality of life (HRQoL). However, whether improvements in physical performance are associated with changes in HRQoL has not been adequately investigated in a nonischemic cardiac population. Methods: Patients who were ablated for atrial fibrillation, who underwent heart valve surgery or who were treated for infective endocarditis, and who participated in 1 of 3 randomized controlled rehabilitation trials were eligible for the current study. Change in physical performance and HRQoL were measured before and after a 12-wk exercise intervention. Physical performance was assessed using a cardiopulmonary exercise test, a 6-min walk test, and a sit-to-stand test. Health-related quality of life was assessed using the generic 36-Item Short Form Health Survey and the disease-specific HeartQoL questionnaire. Spearman correlation coefficient (ρ) and linear regressions quantified the association between changes in physical outcome measures and changes in HRQoL. Results: A total of 344 patients were included (mean age: 60.8 ± 11.6 yr and 77% males). Associations between changes in physical outcome measures and HRQoL ranged from very weak to weak (ρ = −0.056 to 0.228). The observed associations were more dominant within physical dimensions of the HRQoL compared with mental or emotional dimensions. After adjusting for sex, age, and diagnosis, changes in physical performance explained no more than 20% of the variation in the HRQoL. Conclusion: The findings show that the positive improvement in HRQoL from exercise-based cardiac rehabilitation cannot simply be explained by an improvement in physical performance.

Aim: The aim of the project was to conduct a systematic review of meta-analyses of supervised, home-based or telemedicine-based exercise cardiac rehabilitation (CR) published between July 2011 and April 2018. Materials & methods: Evidence on mortality, hospitalization, peak VO2, exercise capacity, muscle strength and health-related quality of life in patients with coronary heart disease or heart failure referred to CR was obtained by searching six electronic databases. Results: Of the 127 point estimates identified in the 30 CR meta-analyses identified (mortality, n = 12; hospitalization, n = 11; VO2, n = 40; exercise capacity, n = 20; strength, n = 18; health-related quality of life, n = 26), 60% were statistically significant and 35% clinically important. Conclusion: The statistical data are sufficiently robust to promote strategies to improve referral to and participation in CR although evidence for clinical importance needs to be further investigated.

Purpose: The aim of this study was to validate the English version of the HeartQoL health-related quality of life questionnaire for use in patients with angina or myocardial infarction. Methods: Patients living in the United States and referred, either for percutaneous coronary intervention or to cardiac rehabilitation, completed the HeartQoL, the Short Form-36 Health Survey, and the Hospital Anxiety and Depression Scale at baseline and 3-months later. The data were analyzed for validity, reliability, and responsiveness. Results: Patients (n = 313 with angina and n = 97 with myocardial infarction) who were referred either for percutaneous coronary intervention (n = 164) or to cardiac rehabilitation (n = 246) completed baseline questionnaires. Patients with angina had significantly lower HeartQoL scores (poorer health-related quality of life) compared with patients with myocardial infarction. Exploratory factor analysis largely supported the 2-factor structure of the HeartQoL in both diagnoses, but further investigation is warranted. Internal consistency reliability was adequate, convergent validity correlations were significant, and discriminative validity was fully confirmed in patients with angina and largely confirmed in patients with myocardial infarction. Responsiveness was largely confirmed in patients who underwent percutaneous coronary intervention (n = 67) and those referred to cardiac rehabilitation (n = 167) with conventional statistical tests and clinically with the effect size, a standardized measure of change. Conclusions: The English HeartQoL health-related quality of life questionnaire is valid, reliable, and responsive in patients with angina and myocardial infarction allowing (1) assessment of baseline, (2) between-diagnosis comparisons, and (3) evaluation of change over time.

Background: While cardiac rehabilitation in patients with ischaemic heart disease and heart failure is considered cost-effective, this evidence may not be transferable to heart valve surgery patients. The aim of this study was to investigate the cost-effectiveness of cardiac rehabilitation following heart valve surgery.Design: We conducted a cost-utility analysis based on a randomised controlled trial of 147 patients who had undergone heart valve surgery and were followed for 6 months.Methods: Patients were randomised to cardiac rehabilitation consisting of 12 weeks of physical exercise training and monthly psycho-educational consultations or to usual care. Costs were measured from a societal perspective and quality-adjusted life years were based on the Euro Qol five-dimensional questionnaire (EQ-5D). Estimates were presented as means and 95% confidence intervals (CIs) based on bootstrapping. Costs and effect differences were presented in a cost-effectiveness plane and were transformed into net benefit and presented in cost-effectiveness acceptability curves. Results: No statistically significant differences were found in total societal costs (-1609 Euros; 95% CI: -6162 to 2942 Euros) or in quality-adjusted life years (-0.000; 95% CI -0.021 to 0.020) between groups. However, approximately 70% of the cost and effect differences were located below the x-axis in the cost-effectiveness plane, and the cost-effectiveness acceptability curves showed that the probability for cost-effectiveness of cardiac rehabilitation compared to usual care is at minimum 75%, driven by a tendency towards costs savings.Conclusions: Cardiac rehabilitation after heart valve surgery may not have improved health-related quality of life in this study, but is likely to be cost-effective for society, outweighing the extra costs of cardiac rehabilitation.

Background Patient-reported health-related quality of life is increasingly used as an outcome measure in clinical trials and as a performance measure to evaluate quality of care. The objective of this study was to assess the psychometric properties of the Danish HeartQoL questionnaire, a core heart disease-specific health-related quality of life questionnaire, in implantable cardioverter defibrillator recipients. Design This study involved cross-sectional and test-retest study designs. Method Implantable cardioverter defibrillator recipients in the cross-sectional study completed the HeartQoL, the Short-Form 36 Health Survey, and the Hospital Anxiety and Depression Scale. The HeartQoL structure, construct-related validity (convergent and discriminative) and reliability (internal consistency) were assessed. HeartQoL reproducibility (test-retest) was assessed in an independent sample of implantable cardioverter defibrillator recipients. Results Mokken scale analysis supported the bi-dimensional structure of HeartQoL among 358 implantable cardioverter defibrillator recipients. Convergent (r>0.72) and discriminative validity were confirmed. The HeartQoL scales demonstrated satisfactory internal consistency (Cronbach's alpha>0.90). Test-retest reliability (two weeks interval) was assessed in 89 implantable cardioverter defibrillator recipients and found to be acceptable for each scale (intra-class correlation>0.90). Conclusion The Danish HeartQoL questionnaire demonstrated satisfactory key psychometric attributes of validity and reliability in this implantable cardioverter defibrillator population. This study adds support for the HeartQoL as a core heart-specific health-related quality of life questionnaire in a broad group of patients with heart disease including implantable cardioverter defibrillator recipients.

Background: The key to interpreting patient-reported health-related quality of life [HRQL] scores for use in person-centered healthcare approaches in clinical practice is having normative reference data to place the scores in the context of a meaningful reference group. The purpose of this analysis is to update and extend existing norms for the MacNew HRQL questionnaire.Methods: Patients with angina, myocardial infarction, or heart failure enrolled in the HeartQoL Project provided MacNew HRQL Global scale and Physical, Emotional and Social subscale data from which norms have been generated.Results: Patients (n=6,130; angina, 32.4%; myocardial infarction, 37.5% and heart failure, 30.1%) living in 22 different countries provided MacNew HRQL scores. Mean MacNew Global HRQL in the total group was 5.04 (±1.1); Global scale and Physical, Emotional, and Social subscale scores were higher in patients with MI than in patients with either angina or heart failure (p<0.001) and higher in patients with angina than in patients with heart failure (p<0.001). Mean Physical subscale scores were lower than either Emotional or Social subscale scores. Mean MacNew Global scale and subscale scores were higher in males and older patients than females and younger patients. The minimal important difference of 0.5 points on the 7-point MacNew was consistent with a 0.5 standard deviation around the mean MacNew scores in each diagnosis. Conclusion: Norms for the MacNew questionnaire have been updated permitting meaningful interpretation of HRQL for an individual patient or for groups of patients with angina, myocardial infarction or heart failure.

Background Atrial fibrillation (AF) is associated with impaired health-related quality-of-life (HRQL). When assessing HRQL, disease-specific and generic instruments are used, which may hinder outcome comparisons across studies. A newly developed core ischaemic heart disease-specific HRQL questionnaire, the HeartQoL, offers a single measurement instrument which may allow outcome comparisons across cardiac diseases. The aim of the study was to evaluate the psychometric properties of HeartQoL in an AF population treated with ablation by assessing its factor structure, construct validity, internal consistency, and test-retest reliability.Design and methods Data were collected in two phases: (a) a cross-sectional study including 462 patients with AF/atrial flutter who completed the HeartQoL and the Short-Form 36 (SF-36), allowing for the evaluation of internal consistency, factor structure and construct validity; and (b) a longitudinal study including 55 patients completing HeartQoL twice to evaluate test-retest reliability.Results The two-factor structure of HeartQoL was largely confirmed in patients with AF. Internal consistency was high (Cronbach's alpha ()0.90) and test-retest reliability good (intra-class correlation0.90). The construct validity was supported, as subscales of HeartQoL correlated strongly with similar (r0.78) and weakly (r0.47) with dissimilar subscales of SF-36. The HeartQoL demonstrated ability to distinguish between different clinical subgroups of patients, indicating sensitivity.Conclusion The HeartQoL showed overall satisfactory psychometric properties, demonstrating it to be a valid instrument in the evaluation of HRQL in patients with AF treated with ablation. This suggests that HeartQoL may be a valuable instrument for making HRQL comparisons across the spectrum of cardiac diseases.