Multidisciplinary Cardiac Rehabilitation and Long-Term Prognosis in Patients With Heart Failure

Contemporary Use of β-Blockers in Heart Failure Patients With and Without Atrial Fibrillation: A Nationwide Database Analysis

Evidence of the effectiveness of β-blockers in heart failure (HF) and atrial fibrillation (AF) in a contemporary cohort is controversial. This study investigated the association between the use of β-blockers and prognosis in hospitalized HF patients with and without AF in Japan. Patients hospitalized with the first episode of acute HF were identified from the National Database of Health Insurance Claims and Specific Health Checkups of Japan between April 2014 and March 2021. Associations of β-blocker use and prognosis were compared by propensity score matching among the AF or non-AF group. A mixed-effects survival model was used, and hazard ratios (HRs) and 95% confidence intervals (CIs) were calculated. Among 428,650 patients discharged with HF in 4,433 hospitals, 175,174 (40.9%) were ≥ 85 years old, 151,873 (35.4%) had complicated AF, and 236,457 (55.2%) were β-blocker users. In a matched AF group, β-blocker use was associated with a lower composite outcome of all-cause mortality or HF rehospitalization (HR [95% CI], 0.95 [0.93-0.97]). A similar result was obtained in a matched non-AF group (0.95 [0.94-0.96]). In addition, the HRs in patients aged ≥ 85 years and female patients were 1.00 [0.98-1.02] and 1.01 [0.98-1.03] in the AF group and 1.03 [1.01-1.05] and 0.98 [0.97-1.00] in the non-AF group, respectively. The favorable prognostic associations of β-blocker use were observed regardless of AF in patients across a broad spectrum of HF in a superaged society.

Development and internal validation of a clinical prediction model to predict independence in daily living at discharge for patients with heart failure: analysis using a Japanese national inpatient database real-world dataset

PURPOSE

To develop a clinical prediction model (CPM) to predict independence in activities of daily living (ADLs) in patients with heart failure.

SUBJECTS AND METHODS

We collected the data of the individuals who were admitted and rehabilitated for heart failure from January 2017 to June 2022 from Japan's Diagnosis Procedure Combination database. We assessed the subjects' ADLs at discharge using the Barthel Index and classified them into independence, partial-independence, and total-dependence groups based on their ADLs at discharge. Two CPMs (an independence model and a partial-independence model) were developed by a binomial logistic regression analysis. The predictors included subject characteristics, treatment, and post-hospitalization disease onset. The CPMs' accuracy was validated by the area under the curve (AUC). Internal validation was performed using the bootstrap method. The final CPM is presented in a nomogram.

RESULTS

We included 96,753 patients whose ADLs could be traced at discharge. The independence model had a 0.73 mean AUC and a 1.0 slope at bootstrapping. We thus developed a simplified model using nomograms, which also showed adequate predictive accuracy in the independence model. The partial-independence model had a 0.65 AUC and inadequate predictive accuracy.

CONCLUSIONS

The independence model of ADLs in patients with heart failure is a useful CPM.

Association of Frailty Assessed by the Kihon Checklist Upon the Readmission of Older Patients With Heart Failure

BACKGROUND

Frailty is highly prevalent and associated with a poor prognosis in older patients with heart failure (HF). In this study, we investigated the association between frailty, as assessed by the Kihon Checklist (KCL), and readmissions in older patients with HF.

METHODS AND RESULTS

We performed a retrospective cohort study of all consecutive older patients hospitalized for HF aged ≥65 years between September 2016 and March 2018. The KCL was based on the health condition and living situation of each patient prior to hospitalization and was categorized into 4 groups based on quartiles of the total score (Q1-4). The primary outcome was readmission due to HF within 2 years post-discharge. A total of 244 patients (111 males; mean age, 81.7 years [6.9]) were included. During 2 years of follow-up post-discharge, 71 patients (29.1%) experienced an adjudicated readmission for acute HF. Multivariable Cox regression analysis revealed that Q2-4 of the KCL were associated with an increased hazard ratio (HR) for HF readmission when compared with Q1 (Q2; HR [95% confidence interval (CI)]: 9.54 [2.78-32.66], P<0.001; Q3; 8.28 [2.37-28.84], P<0.001; Q4; 9.12 [2.51-33.11], P<0.001).

CONCLUSIONS

Our findings revealed an association between frailty, as assessed by the KCL, and readmissions for HF within 2 years of discharge in older patients with HF.

A Case-Control Study on Risk Factors and Outcomes in Congestive Heart Failure

Background

Congestive heart failure (CHF) represents an important health issue characterised by considerable morbidity and mortality. This study sought to identify risk factors for CHF and to evaluate clinical outcomes between CHF patients and control subjects.

Methods

Data were obtained through interviews, physical examinations, and medical records. Risk variables encompassed hypertension, diabetes, dyslipidaemia, tobacco use, alcohol use, sedentary lifestyle, dietary practices, age, gender, and familial history of cardiovascular disease. The outcomes were all-cause mortality, cardiovascular mortality, hospitalisation, major adverse cardiovascular events (MACE), quality of life as measured by the Minnesota Living with Heart Failure Questionnaire (MLHFQ), and functional level according to the New York Heart Association (NYHA) classification. Statistical analyses including t-tests, Chi-square tests, logistic regression and Cox regression.

Results

The findings indicated that hypertension (71.8% vs. 38.5%, p < 0.001), diabetes (47.9% vs. 28.2%, p = 0.002), dyslipidaemia (54.7% vs. 41.0%, p = 0.04), smoking (42.7% vs. 29.1%, p = 0.03), and physical inactivity (65.8% vs. 41.9%, p < 0.001) were more prevalent in cases. Cases exhibited increased hospitalisations (1.8 ± 1.2 vs. 0.7 ± 0.9, p < 0.001), prolonged stays (10.5 ± 5.4 vs. 6.2 ± 3.8 days, p < 0.001), elevated 30-day rehospitalisation rates (21.4% vs. 8.5%, p = 0.007), and a greater incidence of intensive care units (ICU) admissions (17.1% vs. 6.0%, p = 0.01). All-cause mortality (35.9% vs. 17.1%, p = 0.001), cardiovascular mortality (25.6% vs. 10.3%, p = 0.003), and MACE (51.3% vs. 25.6%, p < 0.001) were greater in cases. Quality of life (45.8 ± 12.4 vs. 25.6 ± 10.3, p < 0.001) and functional status (55.6% vs. 23.9%, p < 0.001) were inferior in cases.

Conclusion

CHF patients had greater rates of modifiable risk variables and worse clinical outcomes than controls, underscoring the necessity for comprehensive risk management.

Effects of Acute Phase Intensive Exercise Training in Patients With Acute Decompensated Heart Failure

BACKGROUND

Acute decompensated heart failure (ADHF) leads to hospitalizations and functional decline in older adults. Although cardiac rehabilitation (CR) is effective for stable heart failure, its impact on ADHF patients, particularly those without frailty, is unclear.

OBJECTIVES

The goal of this study was to evaluate the efficacy and safety of early in-hospital CR for patients hospitalized with ADHF who are not frail.

METHODS

In this multicenter trial (ACTIVE-ADHF [Effects of Acute Phase Intensive Exercise Training in Patients with Acute Decompensated Heart Failure]), ADHF patients without physical frailty were randomized 2:1 to undergo either exercise-based CR or standard care. The intervention included early mobilization and structured exercise training. The primary outcome was the change in 6-minute walk distance (6MWD) from baseline to discharge. Secondary outcomes assessed physical and cognitive function, quality of life, and safety.

RESULTS

A total of 91 patients were randomized to treatment, with 59 allocated to the intervention group and 32 to the control group. The primary outcome, 6MWD, improved significantly more in the intervention group, with a mean increase of 75.0 ± 7.8 m vs 44.1 ± 10.2 m in the control group, with an effect size of 30.9 ± 13.1 m (95% CI: 4.8-57.0; P = 0.021). The intervention group showed favorable results in secondary efficacy outcomes, including physical and cognitive function, physical activity, and quality of life. Safety outcomes were similar between groups, except for a greater reduction in B-type natriuretic peptide levels at 90 days' postdischarge in the intervention group.

CONCLUSIONS

In patients with ADHF without physical frailty, in-hospital exercise-based CR led to significant improvements in 6MWD at 2 weeks after randomization without compromising safety. (ACTIVE-ADHF [Effects of Acute Phase Intensive Exercise Training in Patients with Acute Decompensated Heart Failure]; UMIN000020919).

Evidence of Cardiac Rehabilitation for Heart Failure With Reduced Ejection Fraction in Recovery to Maintenance Phase

Heart failure (HF) with reduced left ventricular ejection fraction (HFrEF) is typically coupled with progressive left ventricular enlargement and detrimental cardiac remodeling. The management of HFrEF is comprehensive and primarily involves pharmacologic treatment using cardioprotective agents. Cardiac rehabilitation (CR) is also strongly recommended as a treatment for HFrEF. The evidence on CR for HFrEF is accumulating. CR improves exercise tolerance, subjective symptoms caused by HF, quality of life, and rehospitalization rates. Furthermore, CR may improve all-cause mortality, although the improvement might not be evident in the short term (<1 year) but could potentially become more apparent over a longer period. In the upcoming era of super-aging and advancements in information and communications technology, CR for HFrEF will also require updating. Further research on exercise therapy will require a comprehensive evaluation of the quality and nature of exercise and whether CR would be conducted in a home-based or remote setting; these studies should include older adults, and the findings have the potential to revolutionize the field of CR.

Association of depressive symptoms and engagement in physical activity with event-free survival in patients with heart failure

BACKGROUND

Heart failure (HF) subtype, depressive symptoms, and physical inactivity independently contribute to survival outcomes, but the effect of the interaction of these variables on survival outcomes remains unknown.

OBJECTIVES

We aimed to determine whether depressive symptoms and engagement in physical activity differentially interact to predict the combined endpoint of all-cause death or rehospitalization among patients with HF and reduced (HFrEF) or preserved ejection fraction (HFpEF).

METHODS

This study was a secondary analysis. The sample was categorized by the presence or absence of depressive symptoms, and engagement or non-engagement in physical activity. Cox proportional hazard modeling was used to predict the combined endpoint of all-cause death or rehospitalization.

RESULTS

A total of 1002 patients with HF were included (mean age 64.3 ± 12.7 years; 637 males [64 %]; 844 White [84 %]). Among them, 35.3 % did not engage in physical activity, while 64.7 % engaged in any level of physical activity, and 29.7 % had depressive symptoms. In both subtypes, depressive symptoms were associated with the highest risk of all-cause death or rehospitalization. Among patients with HFrEF, those with depressive symptoms who did not engage in physical activity were associated with a 136 % higher risk of the combined endpoint, while among those with HFpEF, depressive symptoms and engagement in physical activity were associated with a 78 % higher risk.

CONCLUSIONS

Depressive symptoms and lack of physical activity predicted the combined endpoint of all-cause death or rehospitalization among patients with HFrEF, while depressive symptoms alone were the strongest predictor among patients with HFpEF.

Effects of cardiac rehabilitation on in vivo nailfold microcirculation in patients with cardiovascular disease

This study aimed to explore the impact of cardiac rehabilitation (CR) on in vivo and ex vivo microcirculation, exercise capacity, and oxidative stress in patients with cardiovascular disease (CVD). The study included patients with acute coronary syndrome (ACS; n = 45; age, 69.0 ± 14.1 years) and heart failure (HF; n = 66; age, 77.3 ± 10.7 years) who underwent supervised CR during hospitalization. The control group comprised patients without CVD (NCVD; n = 20; age, 75.9 ± 11.2 years). In vivo microcirculatory observations using nailfold video capillary endoscopy at rest and during hyperemia, exercise capacity, and oxidative stress were assessed at baseline and 12 weeks after discharge. Baseline capillary densities were significantly lower in the ACS (5.0 ± 1.7 capillaries/mm2) and HF (4.9 ± 1.7 capillaries/mm2) groups than in the NCVD group (6.5 ± 1.1 capillaries/mm2, p < 0.01). Similarly, capillary density during reactive hyperemia was significantly lower in the ACS (5.8 ± 1.7 capillaries/mm2) and HF (5.4 ± 1.8 capillaries/mm2) groups than in the NCVD group (7.3 ± 1.4 capillaries/mm2, p < 0.01). Patients with ACS and HF had increased capillary densities at 12 weeks compared with at baseline (p < 0.05). This improvement was particularly pronounced among post-discharge outpatient CR participants (n = 20). Grip strength, exercise capacity, and oxidative stress improved at 12 weeks. Baseline capillary density changes were positively correlated with grip strength changes (r = 0.45, p < 0.001). CR significantly improved nailfold capillary density in patients with ACS and HF 12 weeks after discharge.

Cardiac rehabilitation for old-old patients with heart failure and severe functional impairment

BACKGROUND

The effects of cardiac rehabilitation (CR) in old patients with heart failure (HF) and severe functional impairment (SFI) are not well established.

METHODS

We studied 1397 patients with HF and severe functional impairment, defined as a six-minute walking distance (6MWD) <300 m, admitted to inpatient CR. The patients were divided into three groups: Group A (young, ≤65 years), Group B (old-young, 66 to 75 years), and Group C (old-old, >75 years). The primary outcome was an increase in 6MWD to 300 m or more after CR. We used multivariable Cox modeling to determine the association of the primary outcome with three-year mortality after discharge from CR.

RESULTS

At admission to CR, 38.5 % of the patients in group A, 40.0 % in group B, and 46.3 % in group C (p = .029) were unable to walk unassisted. Of these patients, 29.5 %, 32.6 %, and 30.2 % (p = .835), respectively, regained the ability to walk independently. Overall, 370 (26.5 %) patients achieved the primary outcome, 49.1 % in group A, 32.2 % in group B, and 15.7 % in group C (p < .001). The adjusted HR of 3-year mortality for the patients who achieved the primary outcome was 0.53 (95 %CI 0.34-0.83; p = .005) in group A, 0.49 (95 %CI 0.33-0.74; p = .001) in group B, and 0.68 (95 %CI 0.47-0.98; p = .037) in group C.

CONCLUSIONS

Our findings suggest that old-old patients with HF and severe functional impairment may benefit from CR and that functional improvement may predict improved survival.

Associations of cognitive decline with outcomes of cardiovascular rehabilitation in patients with cardiovascular disease

BACKGROUND

Patients with cardiovascular disease (CVD) are often contending with various comorbidities including cognitive decline. Cognitive decline is a risk marker for adverse outcomes in these patients. On the other hand, cardiovascular rehabilitation (CVR) improves clinical outcomes. However, it remains uncertain whether CVR is associated with favorable outcomes in patients with CVD and cognitive decline. Therefore, the present study aimed to investigate whether CVR is associated with favorable outcomes in patients with CVD and cognitive decline.

METHODS

We reviewed 4232 patients admitted for CVD. Cognitive function was assessed using the Mini-Cog at hospital discharge, and a score of <3 was defined as cognitive decline. We measured the 6-min walking distance (6MWD) at discharge and 5 months after CVR prescription for participants in outpatient CVR. The primary outcome was change in exercise tolerance (Δ6MWD), and the secondary outcome was composite events (all-cause death and/or re-admission due to CVD). We compared Δ6MWD between patients with and without cognitive decline and examined the association between outpatient CVR participation and composite events.

RESULTS

Of all patients, 768 had cognitive decline. There was no significant difference in Δ6MWD between the cognitive decline and non-cognitive decline groups, even after adjusting for confounders [estimated mean difference: 2.20 m; 95 % confidence interval (CI): -0.60-5.00 m]. Additionally, participation in outpatient CVR was associated with lower rate of composite events, regardless of cognitive decline [adjusted hazard ratio (aHR): 0.589; 95 % CI: 0.552-0.627 in the cognitive decline group and aHR: 0.767; 95 % CI: 0.742-0.793 in the non-cognitive decline group]. An interaction was observed based on the presence of cognitive decline (p = 0.011).

CONCLUSION

Regardless of cognitive decline, participation in outpatient CVR was associated with increased exercise tolerance. Furthermore, outpatient CVR was linked to reduced composite events in both, with particularly potent association in cognitively impaired patients.

Effect of change in hepato-renal function and cardiac rehabilitation on mortality in patients with heart failure

BACKGROUND

Patients with heart failure (HF) often suffer from hepato-renal dysfunction. The associations between hepato-renal function changes and mortality remain unclear. Further, the effect of cardiac rehabilitation (CR) on mortality and motor functions in patients with HF and hepato-renal dysfunction requires investigation.

METHODS

We reviewed 2522 patients with HF (63.2 % male; median age: 74 years). The association between changes in hepato-renal function assessed by the Model for End-stage Liver Disease eXcluding INR (MELD-XI) score and mortality was examined. The association of CR participation with mortality and physical functions was investigated in patients with HF with decreased, unchanged, and increased MELD-XI scores.

RESULTS

During the follow-up period, 519 (20.6 %) patients died. Worsened MELD-XI score was independently associated with all-cause death [adjusted hazard ratio (aHR): 1.099; 95 % confidence interval (CI): 1.061-1.138; p < 0.001]. CR participation was associated with low mortality, even in the increased MELD-XI score group (aHR: 0.498; 95 % CI: 0.333-0.745; p < 0.001). Trajectory of the MELD-XI score was not associated with physical function changes. There were no time by MELD-XI score interaction effects on handgrip strength (p = 0.084), leg strength (p = 0.082), walking speed (p = 0.583), and 6-min walking distance (p = 0.833) in patients participating in outpatient CR.

CONCLUSIONS

Hepato-renal dysfunction predicts high mortality. CR participation may be helpful for a better prognosis of patients with HF and hepato-renal dysfunction.

Cardiac rehabilitation and frailty: a systematic review and meta-analysis

AIMS

Frailty among cardiac rehabilitation (CR) participants is associated with worse health outcomes. However, no literature synthesis has quantified the relationship between frailty and CR outcomes. The purpose of this study was to examine frailty prevalence at CR admission, frailty changes during CR, and whether frailty is associated with adverse outcomes following CR.

METHODS AND RESULTS

We searched CINAHL, EMBASE, and MEDLINE for studies published from 2000 to 2023. Eligible studies included a validated frailty measure, published in English. Two reviewers independently screened articles and abstracted data. Outcome measures included admission frailty prevalence, frailty and physical function changes, and post-CR hospitalization and mortality. Observational and randomized trials were meta-analysed separately using inverse variance random-effects models. In total, 34 peer reviewed articles (26 observational, 8 randomized trials; 19 360 participants) were included. Admission frailty prevalence was 46% [95% CI 29-62%] and 40% [95% CI 28-52%] as measured by Frailty Index and Kihon Checklist (14 studies) and Frailty Phenotype (11 studies), respectively. Frailty improved following CR participation (standardized mean difference (SMD): 0.68, 95% CI 0.37-0.99; P < 0.0001; six studies). Meta-analysis of observational studies revealed higher admission frailty and increased participants' risk of all-cause mortality (hazard ratio: 9.24, 95% CI 2.93-29.16; P = 0.0001; four studies). Frailer participants at admission had worse physical health outcomes, but improved over the course of CR.

CONCLUSION

High variability in frailty tools and CR designs was observed, and randomized controlled trial contributions were limited. The prevalence of frailty is high in CR and is associated with greater mortality risk; however, CR improves frailty and physical health outcomes.

REGISTRATION

PROSPERO: CRD42022311765.

Holding Health Seminars at Acute Care Hospitals and Fitness Clubs to Prevent Heart Failure

Ehime Prefecture has the highest heart failure mortality rate among men and women in Japan. Healthy life expectancy is low nationwide, which may be related to sarcopenia and frailty. Uwajima City contains a progresses aging of the population in the Ehime Prefecture. Therefore, preventing heart failure requires treatment and patient education not only for the underlying disease, but also for the complications associated with aging, such as sarcopenia and frailty. In 2020, we began working with the fitness club LocomoK.O to focus on prevention after the onset of disease and prevention before onset. We have commenced surveys of healthy older adults living in the community in Uwajima City, including the Short Physical Performance Battery, physical functions such as handgrip strength, and body composition assessment using in-body tests. The data showed that the rate of sarcopenia was extremely high, at 70% in patients with acute heart failure and 39% in the healthy older group, and that 24% of patients with acute heart failure had severe sarcopenia. Based on the collected data, we started health seminars in 2023 to educate citizens about the disease to prevent the onset and recurrence of heart disease, which is in line with the current situation in Uwajima City. We hope that our activities will help those struggling with local medical care.

Artificial Intelligence (AI)-Driven Frailty Prediction Using Electronic Health Records in Hospitalized Patients With Cardiovascular Disease

Background

This study aimed to create a deep learning model for predicting phenotypic physical frailty from electronic medical record information in patients with cardiovascular disease.

Methods and Results

This single-center retrospective study enrolled patients who could be assessed for physical frailty according to cardiovascular health study criteria (25.5% [691/2,705] of the patients were frail). Patients were randomly separated for training (Train set: 80%) and validation (Test set: 20%) of the deep learning model. Multiple models were created using LightGBM, random forest, and logistic regression for deep learning, and their predictive abilities were compared. The LightGBM model had the highest accuracy (in a Test set: F1 score 0.561; accuracy 0.726; area under the curve of the receiver operating characteristics [AUC] 0.804). These results using only commonly used blood biochemistry test indices (in a Test set: F1 score 0.551; accuracy 0.721; AUC 0.793) were similar. The created models were consistently and strongly associated with physical functions at hospital discharge, all-cause death, and heart failure-related readmission.

Conclusions

Deep learning models derived from large sample sizes of phenotypic physical frailty have shown good accuracy and consistent associations with prognosis and physical functions.

Physical activity and sedentary behaviour interventions for people living with both frailty and multiple long-term conditions and their informal carers: a scoping review and stakeholder consultation

INTRODUCTION

This scoping review mapped evidence on physical activity (including structured exercise) and sedentary behaviour interventions (interventions to reduce sedentary behaviour) in people living with both frailty and multiple long-term conditions (MLTCs) and their informal carers.

METHODS

Ten databases and grey literature were searched from 2000 to October 2023. Two reviewers screened studies and one extracted data. Results were shared with three stakeholder groups (n = 21) in a consultation phase.

RESULTS

After screening, 155 papers from 144 studies (1 ongoing) were retained. The majority were randomised controlled trials (86, 55%). Participants' mean age was 73 ± 12 years, and 73% were of White ethnicity. MLTC and frailty measurement varied widely. Most participants were pre-to-moderately frail. Physical health conditions predominated over mental health conditions.Interventions focused on structured exercise (83 studies, 60%) or combined interventions (55 studies, 39%). Two (1%) and one (0.7%) focused solely on habitual physical activity or sedentary behaviour. Adherence was 81% (interquartile range 62%-89%) with goal setting, monitoring and support important to adherence. Carers were only involved in 15 (11%) studies. Most interventions reported positive outcomes, primarily focusing on body functions and structures.

CONCLUSIONS

A modest volume of evidence exists on multicomponent structured exercise interventions, with less focus on habitual physical activity and sedentary behaviour. Interventions report largely positive effects, but an updated systematic review is required. The field could be advanced by more rigorous characterisation of MLTCs, socioeconomic status and ethnicity, increased informal carer involvement and further evaluation of habitual physical activity and sedentary behaviour interventions.

Cardiac Acoustic Biomarkers in Patients with Heart Failure during Cardiopulmonary Exercise Testing: An Exploratory Study

Objective Exercise therapy as part of cardiac rehabilitation is one of the most effective treatments for patients with chronic heart failure (HF). The anaerobic threshold (AT) determined by an exhaled gas analysis during cardiopulmonary exercise testing (CPX) is used to prescribe the appropriate level of exercise therapy. However, CPX using an exhaled gas analysis is not widely performed because of its cost, complexity, and the need for skilled staff. Therefore, a simpler and inexpensive method for determining AT without respiratory gas measurements is required in patients with HF. The present study elucidated the relationship between the AT determined by the CPX ventilatory method (CPX-AT) and the AT determined by cardiac acoustic biomarkers (CABs), which are measured by acoustic cardiography (CAB-AT), in HF patients. Methods Patients underwent symptom-limited ramp CPX twice using a cycle ergometer. The ATs determined from the exhaled gas analysis were identified by three independent physicians. CABs, including the first heart sound (S1) and the second heart sound intensities (peak-to-peak amplitudes), electromechanical activation time (EMAT) defined as the time interval from the Q wave onset on electrocardiography to S1, heart rate, and other parameters, were collected during CPX. Patients Forty patients with HF were included in this study. Results A significant correlation (R=0.70; p<0.001) was found between CPX-AT and CAB-AT, using the double product of S1 intensity and heart rate. CAB-AT using S1 intensity also showed a significant correlation with CPX-AT (R=0.71; p<0.001). Conclusion The present study suggests a possible new method for determining AT without respiratory gas measurements in patients with HF.

BEEAF2 Score: A New Risk Stratification Score for Patients With Stage B Heart Failure From the KUNIUMI Registry Chronic Cohort

BACKGROUND

Stage B heart failure (HF) refers to structural heart disease without signs or symptoms of HF, so that early intervention may delay or prevent the onset of overt HF. However, stage B HF is a very broad concept, and risk stratification of such patients can be challenging.

METHODS AND RESULTS

We conducted a prospective study of data for 1646 consecutive patients with HF from the KUNIUMI (Kobe University Heart Failure Registry in Awaji Medical Center) registry chronic cohort. The definition of HF stages was based on current guidelines for classification of 29 patients as stage A HF, 761 as stage B HF, 827 as stage C HF, and 29 patients as stage D HF. The primary end point was the time-to-first-event defined as cardiovascular death or HF hospitalization within 2.0 years of follow-up. A maximum of 6 adjustment factor points was assigned based on Cox proportional hazards analysis findings for the hazard ratio (HR) of independent risk factors for the primary end point: 1 point for anemia, estimated glomerular filtration rate <45 mL/min per 1.73 m2, brain natriuretic peptide ≥150 pg/mL, and average ratio of early transmitral flow velocity to early diastolic mitral annular velocity >14, and 2 points for clinical frailty scale >3. Patients with stage B HF were stratified into 3 groups, low risk (0-1 points), moderate risk (2-3 points), and high risk (4-6 points). Based on this scoring system (BEEAF2 [brain natriuretic peptide, estimated glomerular filtration rate, ratio of early transmitral flow velocity to early diastolic mitral annular velocity, anemia, and frailty]), the outcome was found to become worse in accordance with risk level. High-risk patients with stage B HF and patients with stage C HF showed similar outcomes.

CONCLUSIONS

Our scoring system offers an easy-to-use evaluation of risk stratification for patients with stage B HF.

Optimizing Cardiac Rehabilitation in Heart Failure: Comprehensive Insights, Barriers, and Future Strategies

Heart failure (HF) is a prevalent cardiovascular disease associated with significant morbidity, mortality, and healthcare costs. Cardiac rehabilitation (CR) is a structured, multidisciplinary intervention that has been proven to improve functional capacity, reduce hospital readmissions, and enhance the quality of life in HF patients. Despite strong clinical evidence and guideline endorsements, CR remains underutilized in this population. This paper provides a comprehensive review of the role of CR in HF, focusing on exercise-based rehabilitation, psychosocial support, and education. It also explores the barriers to CR implementation, such as patient-related factors, provider-related issues, and systemic challenges. Additionally, we propose future strategies to increase CR uptake, including personalized CR programs, telehealth innovations, and integrating CR into routine HF care pathways. By addressing these challenges and implementing these strategies, healthcare systems can optimize CR delivery and improve outcomes for HF patients.

Prognostic impact of frailty based on a comprehensive frailty assessment in patients with heart failure

AIMS

This study aimed to evaluate the impact of frailty and living function domains based on the Kihon Checklist (KCL), a questionnaire for a comprehensive frailty assessment, on prognosis in patients with acute heart failure (AHF).

METHODS AND RESULTS

The Kochi Registry of Subjects with Acute Decompensated Heart Failure (Kochi YOSACOI) study was a prospective multicentre cohort study enrolling 1061 patients hospitalized for AHF from May 2017 to December 2019 in Japan. We divided patients into three groups according to the severity of frailty using the KCL and compared clinical outcomes after discharge. The primary endpoint was all-cause death, and the secondary outcomes were cardiovascular death, heart failure (HF) rehospitalization, and the composite event of cardiovascular death and HF rehospitalization. Of 936 patients (median age, 81 years; 48.9% women) who could be assessed for frailty, we identified frailty in 501 patients (53.5%), prefrailty in 290 patients (31.0%), and non-frailty in 145 patients (15.5%). Compared with prefrail and non-frail patients, frail patients were older (83 vs. 79 and 72 years, P < 0.001), were more likely to be women (53.9% vs. 43.1% and 43.4%, P = 0.005), and were more likely to have a history of previous HF hospitalization (35.4% vs. 25.3% and 19.6%, P < 0.001) and multimorbidity (90.8% vs. 81.0% and 73.8%, P < 0.001). Frail patients had a lower rate of discharge to home (79.7% vs. 94.8% and 96.5%, P < 0.001). During the 2 year follow-up period, frail patients had a higher incidence rate of all-cause death, cardiovascular death, and HF rehospitalization (log-rank P < 0.001, P < 0.001, and P = 0.003, respectively). After adjusting for other prognostic factors, multivariate analysis showed that frailty was associated with all-cause death [adjusted hazard ratio (HR): 2.917, 95% confidence interval (CI): 1.326-6.417, P = 0.008] and cardiovascular death (adjusted HR: 7.026, 95% CI: 1.700-29.030, P = 0.007). Among all domains of the KCL, the cognitive function domain was associated with a higher risk of all-cause death (P = 0.004) and cardiovascular death (P < 0.001). The depression domain remained associated with a higher risk of HF rehospitalization (P = 0.045). The risk for all-cause death increased with an increase in total KCL score (adjusted HR: 1.819, 95% CI: 1.300-2.547, P < 0.001).

CONCLUSIONS

The KCL is a useful tool for risk stratification of adverse outcomes in patients with AHF. Functional declines in psycho-emotional domains including cognitive function and depressed mood contribute to adverse outcomes.

Effectiveness and Influencing Factors of Home-Center-Based Cardiac Rehabilitation as a Transitional Strategy for Acute Myocardial Infarction Patients

Currently, providing patients, particularly those with acute myocardial infarction (AMI), with comprehensive cardiac rehabilitation (CR) has been challenging because of the inadequate availability of medical resources in developing countries. To ensure balance between disease instability and early rehabilitation, strategies for facilitating professional and comprehensive CR opportunities for patients with AMI must be explored.A prospective cohort study was carried out on 1,533 patients with AMI who were admitted to a tertiary hospital between July 2018 and October 2019. Following the principle of voluntarism, 286 patients with AMI participated in home-center-based CR (HCB group), whereas 1,247 patients received usual care (UC group). The primary endpoint of this study was the occurrence of cardiovascular events at 30 months after AMI. Moreover, the study analyzed factors that influence participation rate and effectiveness of the CR model.After analysis, a significant difference in the occurrence of cardiovascular endpoints between the HCB group and the UC group was observed (harzard ratio, 0.68 [95%CI, 0.51-0.91], P = 0.008), with participation in home-center-based CR being an independent influencing factor. Multivariate regression analysis revealed age, gender, smoking history, triglyceride levels, and ejection fraction as independent factors that influence participation rate. Female gender, peak oxygen uptake per kilogram body weight, and ventilation/carbon dioxide production slope were identified as factors that affect the effectiveness of the CR model.In the context of developing countries, this study demonstrates that the home-center-based CR model is efficient and analyzes factors that influence participation rate and effectiveness of the model. These findings provide practical insights for further development of CR programs.

Cancer history and physical function in patients with cardiovascular disease

Both cancer and cardiovascular disease (CVD) cause skeletal muscle mass loss, thereby increasing the likelihood of a poor prognosis. We investigated the association between cancer history and physical function and their combined association with prognosis in patients with CVD. We retrospectively reviewed 3,796 patients with CVD (median age: 70 years; interquartile range [IQR]: 61-77 years) who had undergone physical function tests (gait speed and 6-minute walk distance [6MWD]) at discharge. We performed multiple linear regression analyses to assess potential associations between cancer history and physical function. Moreover, Kaplan-Meier curves and Cox regression analyses were used to evaluate prognostic associations in four groups of patients categorized by the absence or presence of cancer history and of high or low physical function. Multiple regression analyses showed that cancer history was significantly and independently associated with a lower gait speed and 6MWD performance. A total of 610 deaths occurred during the follow-up period (median: 3.1 years; IQR: 1.4-5.4 years). The coexistence of low physical function and cancer history in patients with CVD was associated with a significantly higher mortality risk, even after adjusting for covariates (cancer history/low gait speed, hazard ratio [HR]: 1.93, P < 0.001; and cancer history/low 6MWD, HR: 1.61, P = 0.002). Cancer history is associated with low physical function in patients with CVD, and the combination of both factors is associated with a poor prognosis.

Association Between Adherence to a 3-Month Cardiac Rehabilitation Program and Long-Term Clinical Outcomes in Japanese Patients With Cardiac Implantable Electronic Devices

PURPOSE

The objective of this study was to evaluate the association between comprehensive cardiac rehabilitation (CCR) completion and long-term clinical outcomes in patients with cardiac implantable electronic devices (CIED).

METHODS

This retrospective cohort study included 834 patients with CIED who participated in CCR, which included a cardiopulmonary exercise test or 6-min walk test. Patients with a left ventricular ejection fraction ≤40%, predicted peak oxygen uptake ≤80%, or B-type natriuretic peptide level ≥80 pg/mL were eligible. The primary outcome was all-cause mortality.

RESULTS

After excluding 241 patients with duplicate records and 69 who underwent CCR in the outpatient department, the data of 524 patients were analyzed. Mean age was 64 ± 15 yr, 389 (74%) patients were men, left ventricular ejection fraction was 31 ± 15%, and 282 (54%) patients had a history of hospitalization for worsening heart failure. Of the patients referred for CCR, 294 (56%) completed the program, and an additional 230 patients started but did not complete CCR. Over a 3.7-yr median follow-up period, all-cause mortality occurred in 156 (30%) patients. Completers had lower all-cause mortality rates than non-completers (log-rank 15.77, P < .001). After adjusting for prognostic baseline characteristics, completers had 58% lower all-cause mortality risks than non-completers (HR = 0.42; 95% CI, 0.27-0.64, P < .001).

CONCLUSIONS

Three-mo CCR program completion was associated with lower mortality risks in patients with CIED. New programs or management methods are needed to decrease mortality risks, especially for those who cannot complete CCR programs.

Efficacy of Activity Trackers in Patients With Heart Failure With Preserved Ejection Fraction

BACKGROUND

Heart failure with preserved ejection fraction (HFpEF) is a common, complex syndrome associated with elevated morbidity and mortality. Patients with HFpEF have a high prevalence of comorbidities, including hypertension, diabetes mellitus, and obesity, which are closely related to the underlying mechanisms of the disease. Lifestyle modification with weight loss and physical activity can improve risk factors and functional outcomes in HFpEF. We sought to observe daily physical activity and determine whether utilizing an activity tracker can enhance functional status in HFpEF patients.

METHODS

We performed a prospective analysis of 57 patients with HFpEF from 2021 to 2023 at a single academic medical center who utilized a Fitbit to record one year of daily step activity. The patients were evaluated in the ambulatory setting for an initial visit and subsequently at intervals of 3, 6, and 12 months to gather vitals, labs, physical exam, and functional measurements, including the Six-Minute Walk Test (6MWT) and Kansas City Cardiomyopathy Questionnaire-12 (KCCQ-12). Associations between variables were assessed using Pearson's r correlation using Stata 18.0.

RESULTS

 Of the 49 patients who completed the study, the mean age was 68.1 ± 10.2 years, with 67% of patients identifying as female. The average BMI was 36.4 ± 8.6 kg/m2. Across each time interval, the median numbers of steps per day were 4,113 (2,517-6,520) (1-3 months), 4,583 (2,532-6,326) (4-6 months), and 3,957 (2,942-5,982) (7-12 months). There was no statistically significant variation in daily step count (p=0.06). We observed a statistically significant increase of 66 (6-200) feet in the 6MWT (p= 0.002) from baseline (1,175 (910-1,400)) to 12 months (1,321 (1,000-1,550)). The daily step count was highly correlated with the 6MWT across all time points (1-3 months: r= .70, p< .001; 4-6 months: r= .61, p< .001; 7-12 months: r= .69, p< .001). The total KCCQ-12 scores increased by 6.8 (-4.2-19.8) points (p=0.005) from baseline (60.1 (41.7-73.4)) to 12 months (69.8 (50-84.4)). Among the sub-categories of the questionnaire, we observed a positive correlation between physical limitation scores and daily step count (1-3 months: r= .47, p=.001; 4-6 months: r= .63, p< .001; 7-12 months: r= .56, p= .001). Of interest, one patient who was taking over 15,000 daily steps scored their physical limitation 10-20 points lower than those taking less than half the steps and had one of the lowest quality of life scores in the cohort, reflecting the subjective nature of heart failure (HF) symptoms.

CONCLUSION

Fitbit technology offers a convenient means to monitor real-time physical activity in patients with HFpEF. Utilizing a Fitbit to record daily step activity enhances health-related quality of life in this population. In contrast to the improved average total KCCQ-12 score, we did not observe a clinically significant increase in the 6MWT over the course of the year. Our findings establish the utility of daily step count as a valuable surrogate for six-minute walk distance.

Effects of cardiac rehabilitation on cognitive function in patients with acute coronary syndrome: A systematic review

Background

Construction of an intervention method for the cognitive dysfunction of patients with acute coronary syndrome (ACS) is needed. Exercise-based comprehensive cardiac rehabilitation is a potentially effective approach that can improve cognitive function in ACS patients. This study aimed to investigate the effect of cardiac rehabilitation on cognitive function in ACS patients through a systematic review.

Methods

A systematic review was conducted of studies on PubMed, MEDLINE, Web of Science, and the Cumulative Index to Nursing and Allied Health Literature (CINAHL) on September 13, 2022, to identify those reporting the effects of cardiac rehabilitation on cognitive function in ACS patients. Data that reported exercise-based comprehensive cardiac rehabilitation and cognitive function (even if not main results and any type of cognitive function assessment was used) were extracted.

Results

In total, six studies were included that comprised a total of 1085 ACS patients. Overall positive effects of cardiac rehabilitation on cognitive function in ACS patients were reported across the six studies. All studies included aerobic exercise, resistance exercise, and patient education in cardiac rehabilitation. Meta-analysis could not be undertaken because each dataset used different methods to evaluate cognitive function, and the outcomes were different.

Conclusions

This systematic review showed that cardiac rehabilitation could have positive effects on cognitive function in ACS patients. Our results support the efficacy of cardiac rehabilitation for cognitive function in ACS patients. Additional well-designed clinical trials of exercise-based comprehensive cardiac rehabilitation should be conducted to clarify the true effect on cognitive function in ACS patients.

Changes in left atrial function following two regimens of combined exercise training in patients with ischemic cardiomyopathy: a pilot study

Purpose

Left atrial dysfunction has shown to play a prognostic role in patients with ischemic cardiomyopathy (ICM) and is becoming a therapeutic target for pharmacological and non-pharmacological interventions. The effects of exercise training on the atrial function in patients with ICM have been poorly investigated. In the present study, we assessed the effects of a 12-week combined training (CT) program on the left atrial function in patients with ICM.

Methods

We enlisted a total of 45 clinically stable patients and randomly assigned them to one of the following three groups: 15 to a supervised CT with low-frequency sessions (twice per week) (CTLF); 15 to a supervised CT with high-frequency sessions (thrice per week) (CTHF); and 15 to a control group following contemporary preventive exercise guidelines at home. At baseline and 12 weeks, all patients underwent a symptom-limited exercise test and echocardiography. The training included aerobic continuous exercise and resistance exercise. The analysis of variance (ANOVA) was used to compare within- and inter-group changes.

Results

At 12 weeks, the CTLF and CTHF groups showed a similar increase in the duration of the ergometric test compared with the control (ANOVA p < 0.001). The peak atrial longitudinal strain significantly increased in the CTHF group, while it was unchanged in the CTLF and control groups (ANOVA p = 0.003). The peak atrial contraction strain presented a significant improvement in the CTHF group compared with the CTLF and control groups. The left ventricular global longitudinal strain significantly increased in both the CTHF and the CTLF groups compared with the control group (ANOVA p = 0.017). The systolic blood pressure decreased in the CTHF and CTLF groups, while it was unchanged in the control group. There were no side effects causing the discontinuation of the training.

Conclusions

We demonstrated that a CT program effectively improved atrial function in patients with ICM in a dose-effect manner. This result can help with programming exercise training in this population.

The Effects of Exercise on Telomere Length in Persons With Heart Failure

BACKGROUND

Telomere length is reduced in persons with heart failure (HF). Inflammation is a putative mechanism contributing to telomere shortening. Although physical activity is known to increase telomere length, its effects in HF are unknown.

OBJECTIVE

The aim of this study was to examine the effects of exercise on telomere length and its relationship with interleukin (IL)-1β in persons with HF.

METHODS

This secondary analysis of a 3-month home-based aerobic exercise intervention measured total telomere length and IL-1β levels in persons with HF (69% with reduced ejection fraction).

RESULTS

Total telomere length increased and plasma IL-1β levels decreased in the exercise group from baseline to 3 months. Total telomere length was negatively associated with IL-1β at baseline ( r = -0.441 P = .001).

CONCLUSIONS

The association between telomere length and IL-1β suggests a relationship between inflammation and cellular aging. Moderate-intensity exercise may help maintain cellular functions. Further research is needed to examine the effects on outcomes in persons with HF.

Mapping Knowledge Landscapes and Emerging Trends of the Links Between Frailty and Heart Failure: A Bibliometric Analysis From 2000 to 2023

Background Frailty, within the context of heart failure (HF), is strongly linked to poor patient outcomes. Investigating the vulnerable condition of individuals with HF is crucial, not only for medical reasons but also as a significant public health challenge, especially among the elderly population where both HF and frailty are common. Therefore, it is essential to prioritize HF patients with frailty over those without such symptoms. To begin, promptly assessing the impact of academic research in this area is crucial, considering factors such as geographical regions, authors, journals, and institutions. Additionally, it is important to explore current topics and identify potential areas that could inspire future researchers to conduct further studies to advance public health. Methodology We conducted a search in the Web of Science Core Collection database to identify articles and reviews in the English language focusing on frailty and HF which were published from January 1, 2000, to December 31, 2023. To perform bibliometric analysis, VOSviewer (v.1.6.18) and CiteSpace (v.6.1.R2) were utilized. Results A total of 1,381 original English-language articles were gathered, comprising 1,162 articles and 219 reviews. The quantity of research publications in this area has experienced significant growth since 2013. Among all countries, the United States has contributed the largest number of publications, accounting for 409 articles (29.62% of the total). Additionally, the United States has received the highest number of citations, being cited a total of 13,329 times, as well as boasting the greatest total link strength. Duke University stands out as the institution with the highest number of research papers, having published 40 articles (2.90% of the total). It has also received the most citations, with a total of 2,455 times, and possesses the highest total link strength, which amounts to 212. Within the realm of prolific authors, Kentaro Kamiya from Kitasato University emerges as the most productive, having authored 28 articles (2.03% of the total). When considering scholarly journals, "Esc Heart Failure" contains the highest number of articles pertaining to frailty and HF, publishing a noteworthy 36 articles (2.61% of the total). Noteworthy keywords within this field encompass frailty, heart failure, elderly, mortality, and cardiovascular disease. Over the past five years, the most popular keywords have centered around "frailty syndrome," "sarcopenia," and "therapeutic interventions." Conclusions Research on frailty and HF at a global scale has experienced substantial growth between 2000 and 2023, demonstrating a prospective field for further exploration with potential advantages from ongoing progress. Prospective studies could prioritize the enhancement of cardiac rehabilitation for patients coping with HF and frailty while ensuring the preservation of their overall quality of life.

Randomized Controlled Trial of Cardiac Rehabilitation Using the Balance Exercise Assist Robot in Older Adults with Cardiovascular Disease

BACKGROUND

Recent studies have investigated the effects of exercise on the functional capacity of older adults; training with a balance exercise assist robot (BEAR) effectively improves posture. This study compared the clinical safety and efficacy of training using BEAR video games to conventional resistance training in older adults with cardiovascular disease (CVD).

METHODS

Ninety patients (mean age: 78 years) hospitalized due to worsening CVD were randomized to cardiac rehabilitation (CR) Group R (conventional resistance training) or Group B (training using BEAR). After appropriate therapy, patients underwent laboratory testing and functional evaluation using the timed up-and-go test (TUG), short physical performance battery (SPPB), and functional independence measure (FIM) just before discharge and 4 months after CR. The rates of CVD readmission, cardiac death, and fall-related fractures were monitored.

RESULTS

BEAR had no adverse effects during exercise. At 4 months, TUG and SPPB improved significantly in both groups, with no significant difference between them. FIM motor and the Geriatric Nutritional Risk Index were significantly improved in Group B versus Group R. There was no significant difference in cardiac events and fall-related fractures between the two groups.

CONCLUSION

CR with BEAR is safe and comparable to conventional resistance training for improving balance in older adults with CVD.

Beneficial impacts of physical activity on heart rate variability: A systematic review and meta-analysis

BACKGROUND

Cardiovascular diseases (CVD) are the leading causes of morbidity and mortality. Heart rate variability (HRV) represents the modulatory capacity of the autonomous nervous system and influences mortality. By surveying this meta-analysis, we investigated the impact of physical activity on HRV.

METHODS

Databases, online journal libraries and clinical trial registries were searched for publications of randomized controlled and non-randomized controlled trials concerning adults with coronary artery disease (CAD)/ischemic heart disease (IHD), congestive heart failure (CHF), peripheral arterial disease (PAD) or after acute coronary syndrome (ACS) joining an intervention group with physical activity or a control group with usual care or no intervention. Extracted time-domain and frequency-domain parameter of HRV were analyzed in a meta-analysis using a random effect model. Subgroup analyses concerning intervention type, study design and type of heart disease and sensitivity analysis were performed.

RESULTS

Significant results were obtained for RR-Interval (p = 0.05) and standard deviation of Normal-to-Normal intervals (SDNN) (p = 0.01) for short-term assessment and for the ratio of low-frequency power (LF) to high-frequency power (HF) (p = 0.05) for 24-hour assessment. Subgroup analyses also resulted significant: root-mean-square difference of successive normal R-R intervals (RMSSD) (p = 0.01), SDNN (p = 0.02) and HF (p < 0.01) concerning CHF.

CONCLUSION

We were able to demonstrate the positive impact of physical activity on HRV, especially in patients with CHF. Cardiac rehabilitation exercise programs need to be individualized to identify the most beneficial method of training for improving the prognosis of patients with CVD.

Burden from Study Questionnaire on Patient Fatigue in Qualitative Congestive Heart Failure Research

Mixed methods research forms the backbone of translational research methodologies. Qualitative research and subjective data lead to hypothesis generation and ideas that are then proven via quantitative methodologies and gathering objective data. In this vein, clinical trials that generate subjective data may have limitations, when they are not followed through with quantitative data, in terms of their ability to be considered gold standard evidence and inform guidelines and clinical management. However, since many research methods utilise qualitative tools, an initial factor is that such tools can create a burden on patients and researchers. In addition, the quantity of data and its storage contributes to noise and quality issues for its primary and post hoc use. This paper discusses the issue of the burden of subjective data collected and fatigue in the context of congestive heart failure (CHF) research. The CHF population has a high baseline morbidity, so no doubt the focus should be on the content; however, the lengths of the instruments are a product of their vigorous validation processes. Nonetheless, as an important source of hypothesis generation, if a choice of follow-up qualitative assessment is required for a clinical trial, shorter versions of the questionnaire should be used, without compromising the data collection requirements; otherwise, we need to invest in this area and find suitable solutions.

Safe and promising outcomes of in-hospital preoperative rehabilitation for coronary artery bypass grafting after an acute coronary syndrome

OBJECTIVE

In patients with stable hemodynamic status after an acute coronary syndrome (ACS), coronary artery bypass grafting (CABG) after preoperative investigations can provide outcomes comparable to those of emergency surgery. However, no established guidelines exist regarding the preparation period before surgery. We report the results of the use of an inpatient cardiac rehabilitation program followed by CABG after an ACS to improve post-operative outcomes and prognosis after discharge.

METHODS

From 2005 to 2017, 471 patients underwent either isolated or combined CABG at our institution, and of those, the 393 who received isolated CABG were included in the analysis. Twenty-seven patients (6.9%) were admitted with ACS and underwent preoperative rehabilitation before undergoing CABG, with a subsequent review of surgical morbidity and mortality rates. Propensity score matching yielded a cohort of 26 patients who underwent preoperative rehabilitation (group A) and 26 controls (group B). Preoperative characteristics were similar between groups.

RESULTS

The completion rate of the rehabilitation program was 96.3%. All programs were conducted with inpatients, with an average length of stay of 23 ± 12 days. All patients completed in-bed exercises, and 85% completed out-of-bed exercises. The 30-day postoperative mortality was 0% in both groups A and B, and the rate of postoperative major adverse cardiac or cerebrovascular events at 12 months did not differ significantly between groups (7.7% vs 3.9%, respectively; p = 1.0). The duration of mechanical ventilation (1.3 ± 0.3 vs 1.5 ± 0.3 days, respectively; p = 0.633), length of intensive care unit stay (4.4 ± 2.1 vs 4.8 ± 2.3 days, respectively; p = 0.584) and length of hospital stay (25 ± 13 vs 22 ± 9 days, respectively; p = 0.378) did not differ significantly between groups.

CONCLUSIONS

No complications of preoperative rehabilitation were observed, suggesting that it is an acceptable option for patients who experience ACS and undergo CABG. These results are promising in offering more robust designs of future trials.

Clinical Impact of Improvement in Sarcopenia through Cardiac Rehabilitation in Patients with Heart Failure

OBJECTIVES

Sarcopenia in patients with heart failure (HF) is associated with poor prognosis. Cardiac rehabilitation (CR) decreases the incidence of adverse events in patients with HF. However, the clinical implications of improving sarcopenia status through CR remain unclear. This study investigated the relationship between the changes in sarcopenia status in patients with HF undergoing outpatient CR and the risk of mortality and adverse events.

DESIGN

This was a retrospective cohort study of patients hospitalized at the Kitasato University Hospital Cardiovascular Center for the treatment of HF between January 2007 and December 2020.

SETTING AND PARTICIPANTS

Patients with HF whose sarcopenia status was assessed at hospital discharge and following at least 3 months of outpatient CR were included. Based on the sarcopenia status, all patients were divided into 3 groups: patients without sarcopenia at discharge (ie, robust), patients with sarcopenia at discharge but no sarcopenia following CR (ie, improved), and patients with sarcopenia at discharge and following CR (ie, unimproved).

METHODS

Cox regression analysis was used to examine the risk of all-cause death associated with the 3 sarcopenia status groups.

RESULTS

Of 546 patients with HF (median age: 70 years; male: 63.6%), 377 (69.0%), 54 (9.9%), and 115 (21.1%) were classified as robust, improved, and unimproved, respectively. Multivariate Cox regression analysis showed that the unimproved group had a significantly greater risk of all-cause death when compared to the robust group [hazard ratio (HR) 2.603, 95% CI 1.375-4.930, P = .004], but it did not differ from the improved group (HR 1.403, 95% CI 0.598-3.293, P = .43).

CONCLUSIONS AND IMPLICATIONS

No improvement in sarcopenia status in patients with HF undergoing outpatient CR was associated with a higher risk of all-cause death. Sarcopenia may be an important target to improve the prognosis of patients with HF.

Inpatient vs. Outpatient: A Systematic Review of Information Needs throughout the Heart Failure Patient Journey

The objective of this systematic review was to identify and describe information needs for individuals with heart failure (HF) throughout their patient journey. Six databases were searched (APA PsycINFO, CINAHL Ultimate, Embase, Emcare Nursing, Medline ALL, and Web of Science Core Collection) from inception to February 2023. Search strategies were developed utilizing the PICO framework. Potential studies of any methodological design were considered for inclusion through a snowball hand search. Data from the included articles were extracted by a reviewer, and the extraction accuracy was independently cross-checked by another author. Quality appraisal was assessed using the Mixed-Methods Appraisal Tool. A narrative synthesis was used to analyze all the outcomes according to the Synthesis Without Meta-analysis reporting guidelines. Twenty-five studies (15 quantitative and 10 qualitative) were included. Socioeconomic, cultural, and demographic factors influencing information needs were considered. The top three information needs for outpatients included general HF information, signs and symptoms and disease management strategies. For inpatients, medications, risk factors, and general HF were reported as the top needs. These divergent needs emphasize the importance of tailored education at different stages. Additionally, the review identified gaps in global representation, with limited studies from Africa and South America, underscoring the need for inclusive research. The findings caution against overgeneralization due to varied reporting methods. Practical implications call for culturally sensitive interventions to address nuanced HF patients' needs, while future research must prioritize standardized reporting, consider diverse patient journey timepoints, and minimize biases for enhanced reliability and applicability.

Incremental prognostic value of functional impairment assessed by 6-min walking test for the prediction of mortality in heart failure

Natriuretic peptides (NP) are recognized as the most powerful predictors of adverse outcomes in heart failure (HF). We hypothesized that a measure of functional limitation, as assessed by 6-min walking test (6MWT), would improve the accuracy of a prognostic model incorporating a NP. This was a multicenter observational retrospective study. We studied the prognostic value of severe functional impairment (SFI), defined as the inability to perform a 6MWT or a distance walked during a 6MWT < 300 m, in 1696 patients with HF admitted to cardiac rehabilitation. The primary outcome was 1-year all-cause mortality. After adjusting for the baseline multivariable risk model-including age, sex, systolic blood pressure, anemia, renal dysfunction, sodium level, and NT-proBNP-or for the MAGGIC score, SFI had an odds ratio of 2.58 (95% CI 1.72-3.88; p < 0.001) and 3.12 (95% CI 2.16-4.52; p < 0.001), respectively. Adding SFI to the baseline risk model or the MAGGIC score yielded a significant improvement in discrimination and risk classification. Our data suggest that a simple, 6MWT-derived measure of SFI is a strong predictor of death and provide incremental prognostic information over well-established risk markers in HF, including NP, and the MAGGIC score.

Relationship between serum iron level and physical function in heart failure patients is lost by presence of diabetes

AIMS

Iron deficiency (ID) is common in patients with heart failure (HF) and is reportedly associated with exercise intolerance and impaired quality of life. Iron supplementation therapy in HF patients with ID improves exercise capacity. Conversely, protective roles of iron depletion in the development of diabetes mellitus (DM) and its complications have been proposed. This study aimed to determine the impact of ID on physical function in HF patients with and without DM.

METHODS AND RESULTS

We enrolled consecutive patients who were admitted to our institute for HF diagnosis and management. The short physical performance battery (SPPB) was used to evaluate physical function, and low physical function was defined as an SPPB score of <10 points as individuals with SPPB scores of <10 points are most likely to be classified as frail and are at high risk for disability and future adverse events, including death. ID was defined as serum ferritin < 100 or 100-299 ng/mL when transferrin saturation (TSAT) was <20% according to the HF guidelines. Among the 562 HF patients (72 ± 14 years old; 56% male), 329 patients (58%) and 191 patients (34%) had ID and low physical function, respectively. Multivariate logistic regression analysis showed that TSAT as a continuous variable, but not ID, was a predictor of low physical function (odds ratio: 0.980, P = 0.024). Subgroup analysis showed that a significant association between low TSAT and low physical function was lost in HF patients with DM (P for interaction < 0.001). A spline dose-response curve for the relationship between TSAT and risk of low physical function with adjustments for covariates associated with low physical function in non-DM patients was almost linear with an increase in the risk of low physical function as the TSAT increased, but such a relationship was not found in the analyses of DM patients. A lack of close TSAT-SPPB relationship in HF patients with DM was confirmed also in a propensity-score-matched cohort.

CONCLUSIONS

TSAT as a continuous variable, but not ID, was independently associated with physical function in HF patients, and a significant association was lost in patients with HF and DM, suggesting a limited impact of iron supplementation therapy in HF patients with DM.

Association Between Nurse-Led Multidisciplinary Education and Cardiac Events in Patients With Heart Failure: A Retrospective Chart Review

PURPOSE

This study examined the modifiable factors, including nurse-led multidisciplinary education and in/out-of-hospital rehabilitation, to predict cardiac events in patients with heart failure (HF) in South Korea.

METHODS

A retrospective review of the medical records was conducted using data of patients admitted for HF between June 2021 and April 2022. A total of 342 patients were included in this study. Information related to HF education, cardiac rehabilitation, and demographic and clinical characteristics were collected. Cardiac events, including emergency department visits, readmissions, and deaths, were defined as a composite of events. After adjusting for covariates, a multivariate Cox proportional hazard regression model was used to explore the association between modifiable factors and cardiac events in patients with HF.

RESULTS

During the follow-up period (median, 823 days), 123 patients (36.0%) experienced at least one cardiac event. In the Cox regression model, patients who received nurse-led multidisciplinary HF education during hospitalization were less likely to experience cardiac events (hazard ratio: 0.487; 95% confidence interval [CI]:0.239-0.993). Additionally, high NT-pro BNP levels were associated with an increased risk of cardiac events.

CONCLUSIONS

The education led by nurses on HF was a factor that reduced adverse prognoses in patients with HF. Our results highlight the importance of a nurse-led multidisciplinary approach during hospitalization.

Vulnerable period in heart failure: a window of opportunity for the optimization of treatment - a statement by Mexican experts

Acute heart failure (HF) is associated with poor prognosis. After the acute event, there is a vulnerable period during which the patient has a marked risk of readmission or death. Therefore, early optimization of treatment is mandatory during the vulnerable period. The objective of this article is to provide recommendations to address the management of patients with HF during the vulnerable period from a practical point of view. A group of Mexican experts met to prepare a consensus document. The vulnerable period, with a duration of up to 6 months after the acute event - either hospitalization, visit to the emergency department or the outpatient clinic/day hospital - represents a real window of opportunity to improve outcomes for these patients. To best individualize the recommendations, the management strategies were divided into three periods (early, intermediate and late vulnerable period), including not only therapeutic options but also evaluation and education. Importantly, the recommendations are addressed to the entire cardiology team, including physicians and nurses, but also other specialists implicated in the management of these patients. In conclusion, this document represents an opportunity to improve the management of this population at high risk, with the aim of reducing the burden of HF.

The impact of cardiac rehabilitation for older adults with heart failure who underwent invasive cardiac treatment eligible for long-term care needs certification: A retrospective cohort study

Background

This study aimed to assess the usefulness of cardiac rehabilitation (CR) for older adults with heart failure (HF) who need nursing care and investigate the effect of CR on cognitive function (CF) and basic activities of daily living (BADL).

Methods

This was a retrospective cohort study. The study included older adults with HF eligible for long-term care insurance in fiscal year 2014 (FY2014) as the baseline and followed them up until March 2018. Patients were divided into two groups, CR (+) and CR (-), and the changes in their CF and BADL scores over time for 3 years were investigated.

Results

Of the 765 patients included in the study, 36.5% performed CR. BADL scores in the CR (+) and CR (-) groups (mean (SE)) were 5.81 (0.26) vs. 5.87 (0.20) in FY2014, 5.6 (0.28) vs. 5.92 (0.21) in FY2015, 5.72 (0.31) vs. 6.15 (0.22) in FY2016, and 5.64 (0.33) vs. 6.40 (0.25) in FY2017, respectively. BADL scores worsened over time in the CR (-) group but had a trend to inhibit decline in the CR (+) group, and a significant difference was observed between both groups (p = 0.04). Multivariate analysis showed a significant difference in CR as a factor suppressing ADL decline after 1 year (adjusted odds ratios: 0.54, 95% confidence intervals: 0.36-0.82; p = 0.004). However, no significant difference in the CF scores was observed.

Conclusion

CR for older adults with HF eligible for long-term care needs certification does not affect CF and may suppress ADL decline.

Provider-Perceived Value of Interprofessional Team Meetings as a Core Element of a Lifestyle Medicine Program: A Mixed-Methods Analysis of One Center's Experience

Interprofessional care improves outcomes for medically complex patients and may be a valuable addition to standard lifestyle medicine practice, but implementation barriers exist. The purpose of this study was to explore the key features, perceived impact, and implementation considerations related to holding interprofessional team meetings as part of an intensive lifestyle medicine program. In this mixed-methods study, focus groups were conducted with 15 lifestyle medicine clinicians from various healthcare disciplines who had participated in interprofessional team meetings. Quantitative descriptive statistics of the meeting minutes were also calculated. Clinician-perceived benefits from participating in interprofessional team meetings included increased acquisition of knowledge, access to other clinicians, collaborative decision-making, patient satisfaction, and achievement of patient-centered goals. Participants described the importance of preparing an agenda for the interprofessional team meetings in advance, but a major implementation challenge was the time required to prepare for and conduct the meetings. Commitment and financial support by organization and program leadership were reported as key facilitators to implementing the meetings. Clinicians perceive significant value from incorporation of interprofessional team meetings into an intensive lifestyle medicine program, but successful implementation of meetings requires investment from all levels within a healthcare system.

Developing Multidisciplinary Management of Heart Failure in the Super-Aging Society of Japan

The Japanese population is rapidly aging because of its long life expectancy and low birth rate; additionally, the number of patients with heart failure (HF) is increasing to the extent that HF is now considered a pandemic. According to a recent HF registry study, Japanese patients with HF have both medical and care-related problems. Although hospitalization is used to provide medical services, and institutionalization is used to provide care for frail older adults, it can be difficult to distinguish between them. In this context, multidisciplinary management of HF has become increasingly important in preventing hospital readmissions and maintaining a patient's quality of life. Academia has promoted an increase in the number of certified HF nurses and educators. Researchers have issued numerous guidelines or statements on topics such as cardiac rehabilitation, nutrition, and palliative care, in addition to the diagnosis and treatment of acute and chronic HF. Moreover, the Japanese government has created incentives through various medical and long-term care systems adjustments to increase collaboration between these two fields. This review summarizes current epidemiological registries that focus not only on medical but also care-related problems and the 10 years of multidisciplinary management experience in Japanese medical and long-term care systems.

Factors that predict compliance in a virtual cardiac rehabilitation program

BACKGROUND

Despite the well-established benefits of cardiac rehabilitation (CR) for patients with cardiovascular disease (CVD), participation in CR remain low. Virtual CR programs present a unique opportunity to promote utilization. To date, few virtual CR cohorts have been analyzed for compliance. This study aims to determine factors that predict compliance within a large virtual CR program in the United States.

METHODS

We analyzed 1409 patients enrolled in the Kaiser Permanente Mid-Atlantic States Virtual CR program that consists of 12 CR sessions via telephone. Demographic characteristics, as well as body weight, blood pressure, HbA1c level, and smoking status were collected at admission. Patients were further classified by CVD diagnosis codes. Compliance was defined as at least 75% (9/12 sessions) attendance. Data was analyzed using simple and multiple regression models with significance defined as P < 0.05.

RESULTS

Age was the single strongest predictor for virtual CR compliance (adjusted R2 = 0.58; P < 0.001), and non-compliant patients were younger. HbA1C level, CVD diagnosis codes, and smoking status each moderately predicted compliance (adjusted R2 = 0.48, 0.42, and 0.31, respectively; P < 0.001). Smoking and HbA1C level combined in a multiple regression model significantly improved prediction of compliance (adjusted R2 = 0.79, P < 0.01). Sex, baseline weight or hypertension were not significant predictors of CR compliance.

CONCLUSIONS

Age, diabetes, CVD diagnoses, smoking status at admission are independent predictors of compliance in a large virtual CR program. Targeted intervention could be designed accordingly to improve CR compliance.

Association of Frailty and Depressive Symptoms With the Establishment of Exercise Habits in Patients Undergoing Outpatient Cardiac Rehabilitation

Objective

To assess whether patients undergoing outpatient cardiac rehabilitation who have frailty and depressive symptoms at discharge are less likely than those without these condition to establish positive exercise habits.

Design

A retrospective cohort study that involved the assessment of frailty and depressive symptoms at the end of a 3-month course of cardiac rehabilitation. Frailty was defined as the patient noting 3 or more items using the criteria of Fried et al, while depressive symptoms were delineated by Patient Health Questionnaire-9 (PHQ-9) scores of 10 or greater.

Setting

General hospital (1048 beds) with outpatient cardiac rehabilitation in a suburb location in Japan.

Participants

344 individuals underwent outpatient cardiac rehabilitation during the January 1, 2019-June 1, 2022, study period. Of these, 48 individuals were excluded because they did not complete the course and 54 were excluded because they lacked outcome data. Finaly, 242 individuals (mean age: 68.2±11.1 years) were analyzed.

Interventions

Not applicable.

Main Outcome Variable

The establishment of an exercise habit defined as exercising at least 2 days per week and 30 minutes per day.

Results

Participants were divided into 4 groups depending upon the presence or absence of frailty and depressive symptoms: non-frail with no reported depressive symptoms (173 subjects), frailty-only (21 subjects), depressive symptoms-only (38 subjects), and frailty and depressive symptoms (10 subjects). Compared with patients who were not depressed and not frail, those with frailty only (odds ratio [OR]: 0.43, 95% confidence interval: 0.21-0.88, P=.02) and those with frailty and depressive symptoms (OR: 0.21, 95% confidence interval: 0.05-0.82, P=.025) had significantly lower ORs for establishing exercise habits. After multivariate adjustment, the OR of establishing an exercise habit was significantly lower in those with only frailty (OR: 0.35, 95% confidence interval: 0.14-0.85, P=.005).

Conclusions

This study, while limited by the small number of subjects with both frailty and depressive symptoms, indicates that interventions to prevent frailty during hospitalization and cardiac rehabilitation may be essential for cardiovascular disease patients with frailty whether or not associated with depressive symptoms.

Predictors of home-based cardiac rehabilitation exercise adherence among patients with chronic heart failure: a theory-driven cross-sectional study

BACKGROUND

The factors influencing home-based cardiac rehabilitation exercise adherence among patients with chronic heart failure remain unclear. This study aimed to explore predictors of home-based cardiac rehabilitation exercise adherence in these patients, based on the theory of planned behavior.

METHODS

This theory-driven, cross-sectional study used convenience sampling to recruit patients with chronic heart failure undergoing home-based cardiac rehabilitation. Instruments used included the Home-Based Cardiac Rehabilitation Exercise Adherence Scale, the Multidimensional Self-Efficacy for Exercise Scale, the Perceived Social Support Scale, and the Tampa Scale for Kinesiophobia Heart. Multivariate linear hierarchical regression analysis was employed to examine the factors influencing exercise adherence.

RESULTS

A total of 215 patients with chronic heart failure undergoing home-based cardiac rehabilitation participated in the study. The overall score for home cardiac rehabilitation exercise adherence was (48.73 ± 3.92). Multivariate linear hierarchical regression analysis revealed that age (β=-0.087, p = 0.012), education level (β = 0.080, p = 0.020), fear of movement (β=-0.254, p < 0.001), perceived social support (β = 0.451, p < 0.001), and exercise self-efficacy (β = 0.289, p < 0.001) influenced home-based cardiac rehabilitation exercise adherence. In the second model, fear of exercise explained 23.60% of the total variance, while perceived social support and exercise self-efficacy explained 26.60% of the total variance in the third model.

CONCLUSION

This study found that home-based cardiac rehabilitation exercise adherence in patients with chronic heart failure was suboptimal, and identified its influencing factors. Targeted interventions addressing these factors, such as tailored education, support, and addressing fear of exercise, may help improve exercise adherence.

Benefits of Cardiac Rehabilitation in Cardio-Renal Patients With Heart Failure With Reduced Ejection Fraction

PURPOSE

Chronic kidney disease (CKD) is common in heart failure (HF). Chronic kidney disease often worsens the prognosis and impairs the management of patients with HF. Chronic kidney disease is frequently accompanied by sarcopenia, which limits the benefits of cardiac rehabilitation (CR). The aim of this study was to evaluate the impact of CR on cardiorespiratory fitness in HF patients with reduced ejection fraction (HFrEF) according to the CKD stage.

METHODS

We conducted a retrospective study including 567 consecutive patients with HFrEF, who underwent a 4-wk CR program, and who were evaluated by cardiorespiratory exercise test before and after the program. Patients were stratified according to their estimated glomerular filtration rate (eGFR). We performed multivariate analysis looking for factors associated with an improvement of 10% in peak oxygen uptake (V˙ o2peak ).

RESULTS

Thirty-eight percent of patients had eGFR <60 mL/min/1.73m². With decreasing eGFR, we observed deterioration in V˙ o2peak , first ventilatory threshold (VT1) and workload and an increase in brain natriuretic peptide levels at baseline. After CR, there was an improvement in V˙ O2peak (15.3 vs 17.8 mL/kg/min, P < .001), VT1 (10.5 vs 12.4 mL/kg/min, P < .001), workload (77 vs 94 W, P < .001), and brain natriuretic peptide (688 vs 488 pg/mL, P < .001). These improvements were statistically significant for all stages of CKD. In a multivariate analysis predicting factors associated with V˙ o2peak improvement, renal function did not interfere with results.

CONCLUSIONS

Cardiac rehabilitation is beneficial in patients with HFrEF with CKD regardless of CKD stage. The presence of CKD should not prevent the prescription of CR in patients with HFrEF.

Association Between Early Initiation of Cardiac Rehabilitation and Short-Term Outcomes of Patients With Acute Heart Failure Admitted to the Intensive Care Unit

Cardiac rehabilitation (CR) is a promising therapeutic option for chronic heart failure (HF). However, the extent to which early rehabilitation is beneficial for patients receiving critical care remains controversial. This study examined the association between the early initiation of CR and the short-term clinical outcomes of patients admitted to the intensive care unit (ICU) with acute HF. We used the Diagnosis Procedure Combination database, a nationwide inpatient database in Japan, and included patients with acute HF admitted to the ICU within 2 days after hospital admission. We defined the early initiation of CR as its initiation within 2 days of hospital admission. We performed an overlap weighting based on the propensity scores and inverse probability of treatment weighting analysis to compare the clinical outcomes between patients with and without early initiation of CR. Among 25,362 eligible patients, 3,582 (14.1%) received an early initiation of CR. Overlap weighting created well-balanced cohorts, which showed that the early initiation of CR was related to lower in-hospital mortality (odds ratio [OR] 0.81, 95% confidence interval [CI] 0.68 to 0.96) and shorter hospital stay. The inverse probability of treatment weighting analysis also showed that in-hospital mortality was lower in the patients with the early initiation of CR (OR 0.80, 95% CI 0.67 to 0.96). The instrumental variable analysis also demonstrated the association of the early initiation of CR with lower in-hospital mortality (OR 0.64, 95% CI 0.44 to 0.93). In conclusion, early initiation of CR after hospital admission was associated with better short-term outcomes in patients with acute HF admitted to the ICU, suggesting the potential of the early administration of CR for acute HF requiring intensive care.

Frailty and heart failure: State-of-the-art review

At least half of all patients with heart failure (HF) are affected by frailty, a syndrome that limits an individual ability to recover from acute stressors. While frailty affects up to 90% of patients with HF with preserved ejection fraction, it is also seen in ~30-60% of patients with HF with reduced ejection fraction, with ~26% higher prevalence in women compared with men. The relationship between frailty and HF is bidirectional, with both conditions exacerbating the other. Frailty is further complicated by a higher prevalence of sarcopenia (by ~20%) in HF patients compared with patients without HF, which negatively affects outcomes. Several frailty assessment methods have been employed historically including the Fried frailty phenotype and Rockwood Clinical Frailty Scale to classify HF patients based on the severity of frailty; however, a validated HF-specific frailty assessment tool does not currently exist. Frailty in HF is associated with a poor prognosis with a 1.5-fold to 2-fold higher risk of all-cause death and hospitalizations compared to non-frail patients. Frailty is also highly prevalent in patients with worsening HF, affecting >50% of patients hospitalized for HF. Such patients with multiple readmissions for decompensated HF have markedly poor outcomes compared to younger, non-frail cohorts, and it is hypothesized that it may be due to major physical and functional limitations that limit recovery from an acute episode of worsening HF, a care aspect that has not been addressed in HF guidelines. Frail patients are thought to confer less benefit from therapeutic interventions due to an increased risk of perceived harm, resulting in lower adherence to HF interventions, which may worsen outcomes. Multiple studies report that <40% of frail patients are on guideline-directed medical therapy for HF, of which most are on suboptimal doses of these medications. There is a lack of evidence generated from randomized trials in this incredibly vulnerable population, and most current practice is governed by post hoc analyses of trials, observational registry-based data and providers' clinical judgement. The current body of evidence suggests that the treatment effect of most guideline-based interventions, including medications, cardiac rehabilitation and device therapy, is consistent across all age groups and frailty subgroups and, in some cases, may be amplified in the older, more frail population. In this review, we discuss the characteristics, assessment tools, impact on prognosis and impact on therapeutic interventions of frailty in patients with HF.