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1.
  • O'Connor, C. M., et al. (författare)
  • Effect of nesiritide in patients with acute decompensated heart failure
  • 2011
  • Ingår i: The New England journal of medicine. - : Massachusetts Medical Society. - 0028-4793 .- 1533-4406. ; 365:1, s. 32-43
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Nesiritide is approved in the United States for early relief of dyspnea in patients with acute heart failure. Previous meta-analyses have raised questions regarding renal toxicity and the mortality associated with this agent. METHODS: We randomly assigned 7141 patients who were hospitalized with acute heart failure to receive either nesiritide or placebo for 24 to 168 hours in addition to standard care. Coprimary end points were the change in dyspnea at 6 and 24 hours, as measured on a 7-point Likert scale, and the composite end point of rehospitalization for heart failure or death within 30 days. RESULTS: Patients randomly assigned to nesiritide, as compared with those assigned to placebo, more frequently reported markedly or moderately improved dyspnea at 6 hours (44.5% vs. 42.1%, P=0.03) and 24 hours (68.2% vs. 66.1%, P=0.007), but the prespecified level for significance (P
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  • Dickstein, D. L., et al. (författare)
  • Brain and blood biomarkers of tauopathy and neuronal injury in humans and rats with neurobehavioral syndromes following blast exposure
  • 2021
  • Ingår i: Molecular Psychiatry. - : Springer Science and Business Media LLC. - 1359-4184 .- 1476-5578. ; 26, s. 5940-5954
  • Tidskriftsartikel (refereegranskat)abstract
    • Traumatic brain injury (TBI) is a risk factor for the later development of neurodegenerative diseases that may have various underlying pathologies. Chronic traumatic encephalopathy (CTE) in particular is associated with repetitive mild TBI (mTBI) and is characterized pathologically by aggregation of hyperphosphorylated tau into neurofibrillary tangles (NFTs). CTE may be suspected when behavior, cognition, and/or memory deteriorate following repetitive mTBI. Exposure to blast overpressure from improvised explosive devices (IEDs) has been implicated as a potential antecedent for CTE amongst Iraq and Afghanistan Warfighters. In this study, we identified biomarker signatures in rats exposed to repetitive low-level blast that develop chronic anxiety-related traits and in human veterans exposed to IED blasts in theater with behavioral, cognitive, and/or memory complaints. Rats exposed to repetitive low-level blasts accumulated abnormal hyperphosphorylated tau in neuronal perikarya and perivascular astroglial processes. Using positron emission tomography (PET) and the [F-18]AV1451 (flortaucipir) tau ligand, we found that five of 10 veterans exhibited excessive retention of [F-18]AV1451 at the white/gray matter junction in frontal, parietal, and temporal brain regions, a typical localization of CTE tauopathy. We also observed elevated levels of neurofilament light (NfL) chain protein in the plasma of veterans displaying excess [F-18]AV1451 retention. These findings suggest an association linking blast injury, tauopathy, and neuronal injury. Further study is required to determine whether clinical, neuroimaging, and/or fluid biomarker signatures can improve the diagnosis of long-term neuropsychiatric sequelae of mTBI.
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  • Cosmi, F., et al. (författare)
  • Treatment with insulin is associated with worse outcome in patients with chronic heart failure and diabetes
  • 2018
  • Ingår i: European Journal of Heart Failure. - : Wiley. - 1388-9842. ; 20:5, s. 888-895
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims Up to one-third of patients with diabetes mellitus and heart failure (HF) are treated with insulin. As insulin causes sodium retention and hypoglycaemia, its use might be associated with worse outcomes. Methods and results We examined two datasets: 24 012 patients with HF from four large randomized trials and an administrative database of 4 million individuals, 103 857 of whom with HF. In the former, survival was examined using Cox proportional hazards models adjusted for baseline variables and separately for propensity scores. Fine-Gray competing risk regression models were used to assess the risk of hospitalization for HF. For the latter, a case-control nested within a population-based cohort study was conducted with propensity score. Prevalence of diabetes mellitus at study entry ranged from 25.5% to 29.5% across trials. Insulin alone or in combination with oral hypoglycaemic drugs was prescribed at randomization to 24.4% to 34.5% of the patients with diabetes. The rates of death from any cause and hospitalization for HF were higher in patients with vs. without diabetes, and highest of all in patients prescribed insulin [propensity score pooled hazard ratio for all-cause mortality 1.27 (1.16-1.38), for HF hospitalization 1.23 (1.13-1.33)]. In the administrative registry, insulin prescription was associated with a higher risk of all-cause death [odds ratio (OR) 2.02, 95% confidence interval (CI) 1.87-2.19] and rehospitalization for HF (OR 1.42, 95% CI 1.32-1.53). Conclusions Whether insulin use is associated with poor outcomes in HF should be investigated further with controlled trials, as should the possibility that there may be safer alternative glucose-lowering treatments for patients with HF and type 2 diabetes mellitus.
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  • Kristensen, S. L., et al. (författare)
  • Prevalence and incidence of intraventricular conduction delays and outcomes in patients with heart failure and reduced ejection fraction: Insights from PARADIGM-HF and ATMOSPHERE
  • 2020
  • Ingår i: European Journal of Heart Failure. - : Wiley. - 1388-9842 .- 1879-0844. ; 22:12, s. 2370-9
  • Tidskriftsartikel (refereegranskat)abstract
    • AIMS: The importance of intraventricular conduction delay (IVCD), incidence of new IVCD and its relationship to outcomes in heart failure and reduced ejection fraction (HFrEF) is not well studied. We addressed these questions in the PARADIGM-HF and ATMOSPHERE trials. METHODS AND RESULTS: Risk of the primary composite outcome of cardiovascular death or HF hospitalization and all-cause mortality were estimated by use of Cox regression according to baseline QRS duration and morphology in 11,861 patients without an intracardiac device. At baseline, 1,789 (15.1%) patients had left bundle branch block (LBBB), 524 (4.4%) RBBB, 454 (3.8%) non-specific IVCD, 2588 (21.8%) "mildly abnormal" QRS (110-129 milliseconds [ms]) and 6506 (54.9%) QRS <110 ms. During a median follow-up of 2.5 years, the risk of the primary composite endpoint was higher among those with a wide QRS, irrespective of morphology: hazard ratios (95% CI) LBBB 1.36 (1.23, 1.50), RBBB 1.54 (1.31, 1.79), nonspecific IVCD 1.65 (1.40, 1.94) and QRS 110-129 ms 1.35 (95% CI 1.23, 1.47), compared with QRS duration <110 ms. A total of 1,234 (15.6%) patients developed new-onset QRS-widening >/=130 ms (6.1 per 100 py). Incident LBBB occurred in 495 (6.3%) patients (2.4 per 100 py) and was associated with a higher risk of the primary composite outcome; HR 1.42 (1.12, 1.82). CONCLUSION: In patients with HFrEF, a wide QRS was associated with worse clinical outcomes irrespective of morphology. The annual incidence of new-onset LBBB was around 2.5%, and associated with a higher risk of adverse outcomes, highlighting the importance of repeat ECG review.
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8.
  • Shen, L., et al. (författare)
  • Contemporary Characteristics and Outcomes in Chagasic Heart Failure Compared With Other Nonischemic and Ischemic Cardiomyopathy
  • 2017
  • Ingår i: Circulation. Heart failure. - 1941-3289 .- 1941-3297. ; 10:11
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Chagas' disease is an important cause of cardiomyopathy in Latin America. We aimed to compare clinical characteristics and outcomes in patients with heart failure (HF) with reduced ejection fraction caused by Chagas' disease, with other etiologies, in the era of modern HF therapies. METHODS AND RESULTS: This study included 2552 Latin American patients randomized in the PARADIGM-HF (Prospective Comparison of ARNI With ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure) and ATMOSPHERE (Aliskiren Trial to Minimize Outcomes in Patients With Heart Failure) trials. The investigator-reported etiology was categorized as Chagasic, other nonischemic, or ischemic cardiomyopathy. The outcomes of interest included the composite of cardiovascular death or HF hospitalization and its components and death from any cause. Unadjusted and adjusted Cox proportional hazards models were performed to compare outcomes by pathogenesis. There were 195 patients with Chagasic HF with reduced ejection fraction, 1300 with other nonischemic cardiomyopathy, and 1057 with ischemic cardiomyopathy. Compared with other etiologies, Chagasic patients were more often female, younger, and had lower prevalence of hypertension, diabetes mellitus, and renal impairment (but had higher prevalence of stroke and pacemaker implantation) and had worse health-related quality of life. The rates of the composite outcome were 17.2, 12.5, and 11.4 per 100 person-years for Chagasic, other nonischemic, and ischemic patients, respectively-adjusted hazard ratio for Chagasic versus other nonischemic: 1.49 (95% confidence interval, 1.15-1.94; P=0.003) and Chagasic versus ischemic: 1.55 (1.18-2.04; P=0.002). The rates of all-cause mortality were also higher. CONCLUSIONS: Despite younger age, less comorbidity, and comprehensive use of conventional HF therapies, patients with Chagasic HF with reduced ejection fraction continue to have worse quality of life and higher hospitalization and mortality rates compared with other etiologies. CLINICAL TRIAL REGISTRATION: PARADIGM-HF: URL: http://www.clinicaltrials.gov. Unique identifier: NCT01035255; ATMOSPHERE: URL: http://www.clinicaltrials.gov. Unique identifier: NCT00853658.
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  • Simpson, J., et al. (författare)
  • Prognostic Models Derived in PARADIGM-HF and Validated in ATMOSPHERE and the Swedish Heart Failure Registry to Predict Mortality and Morbidity in Chronic Heart Failure
  • 2020
  • Ingår i: JAMA Cardiology. - : American Medical Association (AMA). - 2380-6583 .- 2380-6591. ; 5:4, s. 432-441
  • Tidskriftsartikel (refereegranskat)abstract
    • Importance: Accurate prediction of risk of death or hospitalizations in patients with heart failure (HF) may allow physicians to explore how more accurate decisions regarding appropriateness and timing of disease-modifying treatments, advanced therapies, or the need for end-of-life care can be made. Objective: To develop and validate a prognostic model for patients with HF. Design, Setting, and Participants: Multivariable analyses were performed in a stepwise fashion. Harrell C statistic was used to assess the discriminative ability. The derivation cohort was Prospective Comparison of ARNI With ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure trial (PARADIGM-HF) participants. The models were validated using the Aliskiren Trial to Minimize Outcomes in Patients with Heart Failure Trial (ATMOSPHERE) study and in the Swedish Heart Failure Registry (SwedeHF). A total of 8399 participants enrolled in PARADIGM-HF. Data were analyzed between June 2016 and June 2018. Main Outcomes and Measures: Cardiovascular death, all-cause mortality, and the composite of cardiovascular death or HF hospitalization at both 1 and 2 years. Results: Complete baseline clinical data were available for 8011 patients in PARADIGM-HF. The mean (SD) age of participants was 64 (11.4) years, 78.2% were men (n = 6567 of 8011), and 70.6% were New York Heart Association class II (n = 5919 of 8011). During a mean follow-up of 27 months, 1546 patients died, and 2031 had a cardiovascular death or HF hospitalization. The common variables were: Male sex, race/ethnicity (black or Asian), region (Central Europe or Latin America), HF duration of more than 5 years, New York Heart Association class III/IV, left ventricular ejection fraction, diabetes mellitus, β-blocker use at baseline, and allocation to sacubitril/valsartan. Ranked by χ2, N-terminal pro brain natriuretic peptide was the single most powerful independent predictor of each outcome. The C statistic at 1 and 2 years was 0.74 (95% CI, 0.71-0.76) and 0.71 (95% CI, 0.70-0.73) for the primary composite end point, 0.73 (95% CI, 0.71-0.75) and 0.71 (95% CI, 0.69-0.73) for cardiovascular death, and 0.71 (95% CI, 0.69-0.74) and 0.70 (95% CI, 0.67-0.74) for all-cause death, respectively. When validated in ATMOSPHERE, the C statistic at 1 and 2 years was 0.71 (95% CI, 0.69-0.72) and 0.70 (95% CI, 0.68-0.71) for the primary composite end point, 0.71 (95% CI, 0.69-0.74) and 0.70 (95% CI, 0.69-0.72) for cardiovascular death, and 0.71 (95% CI, 0.69-0.74) and 0.70 (95% CI, 0.68-0.72) for all-cause death, respectively. An online calculator was created to allow calculation of an individual's risk (http://www.predict-hf.com). Conclusions and Relevance: Predictive models performed well and were developed and externally validated in large cohorts of geographically representative patients, comprehensively characterized with clinical and laboratory data including natriuretic peptides, who were receiving contemporary evidence-based treatment. © 2020 American Medical Association. All rights reserved.
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  • Babich, T, et al. (författare)
  • Ceftazidime, Carbapenems, or Piperacillin-tazobactam as Single Definitive Therapy for Pseudomonas aeruginosa Bloodstream Infection: A Multisite Retrospective Study
  • 2020
  • Ingår i: Clinical infectious diseases : an official publication of the Infectious Diseases Society of America. - : Oxford University Press (OUP). - 1537-6591. ; 70:11, s. 2270-2280
  • Tidskriftsartikel (refereegranskat)abstract
    • BackgroundThe optimal antibiotic regimen for Pseudomonas aeruginosa bacteremia is controversial. Although β-lactam monotherapy is common, data to guide the choice between antibiotics are scarce. We aimed to compare ceftazidime, carbapenems, and piperacillin-tazobactam as definitive monotherapy.MethodsA multinational retrospective study (9 countries, 25 centers) including 767 hospitalized patients with P. aeruginosa bacteremia treated with β-lactam monotherapy during 2009–2015. The primary outcome was 30-day all-cause mortality. Univariate and multivariate, including propensity-adjusted, analyses were conducted introducing monotherapy type as an independent variable.ResultsThirty-day mortality was 37/213 (17.4%), 42/210 (20%), and 55/344 (16%) in the ceftazidime, carbapenem, and piperacillin-tazobactam groups, respectively. Type of monotherapy was not significantly associated with mortality in either univariate, multivariate, or propensity-adjusted analyses (odds ratio [OR], 1.14; 95% confidence interval [CI], 0.52–2.46, for ceftazidime; OR, 1.3; 95% CI, 0.67–2.51, for piperacillin-tazobactam, with carbapenems as reference in propensity adjusted multivariate analysis; 542 patients). No significant difference between antibiotics was demonstrated for clinical failure, microbiological failure, or adverse events. Isolation of P. aeruginosa with new resistance to antipseudomonal drugs was significantly more frequent with carbapenems (36/206 [17.5%]) versus ceftazidime (25/201 [12.4%]) and piperacillin-tazobactam (28/332 [8.4%] (P = .007).ConclusionsNo significant difference in mortality, clinical, and microbiological outcomes or adverse events was demonstrated between ceftazidime, carbapenems, and piperacillin-tazobactam as definitive treatment of P. aeruginosa bacteremia. Higher rates of resistant P. aeruginosa after patients were treated with carbapenems, along with the general preference for carbapenem-sparing regimens, suggests using ceftazidime or piperacillin-tazobactam for treating susceptible infection.
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  • Shen, L., et al. (författare)
  • Development and external validation of prognostic models to predict sudden and pump-failure death in patients with HFrEF from PARADIGM-HF and ATMOSPHERE
  • 2021
  • Ingår i: Clinical Research in Cardiology. - : Springer Science and Business Media LLC. - 1861-0684 .- 1861-0692. ; 110, s. 1334-1349
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Sudden death (SD) and pump failure death (PFD) are the two leading causes of death in patients with heart failure and reduced ejection fraction (HFrEF). Objective Identifying patients at higher risk for mode-specific death would allow better targeting of individual patients for relevant device and other therapies. Methods We developed models in 7156 patients with HFrEF from the Prospective comparison of ARNI with ACEI to Determine Impact on Global Mortality and morbidity in Heart Failure (PARADIGM-HF) trial, using Fine-Gray regressions counting other deaths as competing risks. The derived models were externally validated in the Aliskiren Trial to Minimize Outcomes in Patients with Heart Failure (ATMOSPHERE) trial. Results NYHA class and NT-proBNP were independent predictors for both modes of death. The SD model additionally included male sex, Asian or Black race, prior CABG or PCI, cancer history, MI history, treatment with LCZ696 vs. enalapril, QRS duration and ECG left ventricular hypertrophy. While LVEF, ischemic etiology, systolic blood pressure, HF duration, ECG bundle branch block, and serum albumin, chloride and creatinine were included in the PFD model. Model discrimination was good for SD and excellent for PFD with Harrell's C of 0.67 and 0.78 after correction for optimism, respectively. The observed and predicted incidences were similar in each quartile of risk scores at 3 years in each model. The performance of both models remained robust in ATMOSPHERE. Conclusion We developed and validated models which separately predict SD and PFD in patients with HFrEF. These models may help clinicians and patients consider therapies targeted at these modes of death.
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  • Zannad, F., et al. (författare)
  • Clinical outcome endpoints in heart failure trials: a European Society of Cardiology Heart Failure Association consensus document
  • 2013
  • Ingår i: European Journal of Heart Failure. - : Wiley. - 1388-9842 .- 1879-0844. ; 15:10, s. 1082-1094
  • Tidskriftsartikel (refereegranskat)abstract
    • Endpoint selection is a critically important step in clinical trial design. It poses major challenges for investigators, regulators, and study sponsors, and it also has important clinical and practical implications for physicians and patients. Clinical outcomes of interest in heart failure trials include all-cause mortality, cause-specific mortality, relevant non-fatal morbidity (e.g. all-cause and cause-specific hospitalization), composites capturing both morbidity and mortality, safety, symptoms, functional capacity, and patient-reported outcomes. Each of these endpoints has strengths and weaknesses that create controversies regarding which is most appropriate in terms of clinical importance, sensitivity, reliability, and consistency. Not surprisingly, a lack of consensus exists within the scientific community regarding the optimal endpoint(s) for both acute and chronic heart failure trials. In an effort to address these issues, the Heart Failure Association of the European Society of Cardiology (HFA-ESC) convened a group of expert heart failure clinical investigators, biostatisticians, regulators, and pharmaceutical industry scientists (Nice, France, 12-13 February 2012) to evaluate the challenges of defining heart failure endpoints in clinical trials and to develop a consensus framework. This report summarizes the group's recommendations for achieving common views on heart failure endpoints in clinical trials.
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  • Dewan, P., et al. (författare)
  • Differential Impact of Heart Failure With Reduced Ejection Fraction on Men and Women
  • 2019
  • Ingår i: Journal of the American College of Cardiology. - : Elsevier BV. - 0735-1097. ; 73:1, s. 29-40
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND Heart failure (HF) trials initiated in the last century highlighted many differences between men and women. Of particular concern was undertreatment of women compared with men, but much has changed during the past 20 years. OBJECTIVES This study sought to identify these changes, which may give a new perspective on the management of, and outcomes in, women with HF. METHODS The study analyzed 12,058 men and 3,357 women enrolled in 2 large HF with reduced ejection fraction (HFrEF) trials with near identical inclusion and exclusion criteria and the same principal outcomes. Outcomes were adjusted for other prognostic variables including N-terminal pro-B-type natriuretic peptide. RESULTS Women were older and more often obese than men were, had slightly higher systolic blood pressure and heart rate, and were less likely to have most comorbidities, except hypertension. Women had more symptoms and signs (e.g., pedal edema 23.4% vs 19.9%; p < 0.0001) and worse quality of life-median Kansas City Cardiomyopathy Questionnaire Clinical Summary Score 71.3 (interquartile range: 53.4 to 86.5) versus 81.3 (interquartile range: 65.1 to 92.7; p < 0.0001)-despite similar left ventricular ejection fraction and N-terminal pro-B-type natriuretic peptide. However, women had lower mortality (adjusted hazard ratio: 0.68; 95% confidence interval: 0.62 to 0.74; p < 0.001) and risk of HF hospitalization (hazard ratio: 0.80; 95% confidence interval: 0.72 to 0.89; p < 0.001). Diuretics and anticoagulants were underutilized in women. Device therapy was underused in both men and women, but more so in women (e.g., defibrillator 8.6% vs. 16.6%; p < 0.0001). CONCLUSIONS Although women with HFrEF live longer than men, their additional years of life are of poorer quality, with greater self-reported psychological and physical disability. The explanation for this different sex-related experience of HFrEF is unknown as is whether physicians recognize it. Women continue to receive suboptimal treatment, compared with men, with no obvious explanation for this shortfall.
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  • Dewan, P., et al. (författare)
  • Income Inequality and Outcomes in Heart Failure A Global Between-Country Analysis
  • 2019
  • Ingår i: Jacc-Heart Failure. - : Elsevier BV. - 2213-1779. ; 7:4, s. 336-346
  • Tidskriftsartikel (refereegranskat)abstract
    • OBJECTIVES This study examined the relationship between income inequality and heart failure outcomes. BACKGROUND The income inequality hypothesis postulates that population health is influenced by income distribution within a society, with greater inequality associated with worse outcomes. METHODS This study analyzed heart failure outcomes in 2 large trials conducted in 54 countries. Countries were divided by tertiles of Gini coefficients (where 0% represented absolute income equality and 100% represented absolute income inequality), and heart failure outcomes were adjusted for standard prognostic variables, country per capita income, education index, hospital bed density, and health worker density. RESULTS Of the 15,126 patients studied, 5,320 patients lived in Gini coefficient tertile 1 countries (coefficient: <33%), 6,124 patients lived in tertile 2 countries (33% to 41%), and 3,772 patients lived in tertile 3 countries (>41%). Patients in tertile 3 were younger than tertile 1 patients, were more often women, and had less comorbidity and several indicators of less severe heart failure, yet the tertile 3-to-1 hazard ratios (HRs) for the primary composite outcome of cardiovascular death or heart failure hospitalization were 1.57 (95% confidence interval [CI]: 1.38 to 1.79) and 1.48 for all-cause death (95% CI: 1.29 to 1.71) after adjustment for recognized prognostic variables. After additional adjustments were made for per capita income, education index, hospital bed density, and health worker density, these HRs were 1.46 (95% CI: 1.25 to 1.70) and 1.30 (95% CI: 1.10 to 1.53), respectively. CONCLUSIONS Greater income inequality was associated with worse heart failure outcomes, with an impact similar to those of major comorbidities. Better understanding of the societal and personal bases of these findings may suggest approaches to improve heart failure outcomes. (C) 2019 The Authors. Published by Elsevier on behalf of the American College of Cardiology Foundation.
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  • Dewan, P., et al. (författare)
  • The prevalence and importance of frailty in heart failure with reduced ejection fraction - an analysis of PARADIGM-HF and ATMOSPHERE
  • 2020
  • Ingår i: European Journal of Heart Failure. - : Wiley. - 1388-9842 .- 1879-0844. ; 22:11, s. 2123-2133
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims Frailty, characterized by loss of homeostatic reserves and increased vulnerability to physiological decompensation, results from an aggregation of insults across multiple organ systems. Frailty can be quantified by counting the number of 'health deficits' across a range of domains. We assessed the frequency of, and outcomes related to, frailty in patients with heart failure and reduced ejection fraction (HFrEF). Methods and results Using a cumulative deficits approach, we constructed a 42-item frailty index (FI) and applied it to identify frail patients enrolled in two HFrEF trials (PARADIGM-HF and ATMOSPHERE). In keeping with previous studies, patients with FI <= 0.210 were classified as non-frail and those with higher scores were divided into two categories using score increments of 0.100. Clinical outcomes were examined, adjusting for prognostic variables. Among 13 625 participants, mean (+/- standard deviation) FI was 0.250 (0.10) and 8383 patients (63%) were frail (FI >0.210). The frailest patients were older and had more symptoms and signs of heart failure. Women were frailer than men. All outcomes were worse in the frailest, with high rates of all-cause death or all-cause hospitalization: 40.7 (39.1-42.4) vs. 22.1 (21.2-23.0) per 100 person-years in the non-frail; adjusted hazard ratio 1.63 (1.53-1.75) (P < 0.001). The rate of all-cause hospitalizations, taking account of recurrences, was 61.5 (59.8-63.1) vs. 31.2 (30.3-32.2) per 100 person-years (incidence rate ratio 1.76; 1.62-1.90; P < 0.001). Conclusion Frailty is highly prevalent in HFrEF and associated with greater deterioration in quality of life and higher risk of hospitalization and death. Strategies to prevent and treat frailty are needed in HFrEF.
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  • Kristensen, S. L., et al. (författare)
  • Prognostic Value of N-Terminal Pro-B-Type Natriuretic Peptide Levels in Heart Failure Patients With and Without Atrial Fibrillation
  • 2017
  • Ingår i: Circulation Heart Failure. - 1941-3289 .- 1941-3297. ; 10:10
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Patients with heart failure (HF) and atrial fibrillation (AF) have higher circulating levels of NT-proBNP (N-terminal pro-B-type natriuretic peptide) than HF patients without AF. There is uncertainty about the prognostic importance of a given concentration of NT-proBNP in HF patients with and without AF. We investigated this question in a large cohort of patients with HF and reduced ejection fraction. METHODS AND RESULTS: We studied 14 737 patients with HF and reduced ejection fraction and a measurement of NT-proBNP at time of screening, enrolled in either the PARADIGM-HF trial (Prospective Comparison of ARNI With ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure) or the ATMOSPHERE trial (Aliskiren Trial to Minimize Outcomes in Patients With Heart Failure), of whom 3575 (24%) had AF on their baseline ECG. Median (Q1, Q3) levels of NT-proBNP were 1817 pg/mL (1095-3266 pg/mL) in those with AF and 1271 pg/mL (703-2569 pg/mL) in those without (P<0.0001). Patients with AF were older (67 versus 62 years), had worse New York Heart Association class (III/IV; 36% versus 24%), and experienced fewer previous HF hospitalizations (52% versus 61%) or myocardial infarction (30% versus 46%); all P<0.001. We categorized patients with and without AF into 5 NT-proBNP bands: <400, 400 to 999 (reference), 1000 to 1999, 2000 to 2999, and >/=3000 pg/mL. For the primary composite outcome of cardiovascular death or HF hospitalization, event rates differed for patients with and without AF in the lowest band (<400 pg/mL; 8.2 versus 5.0 per 100 patient-years), but not for the higher bands (400-999 pg/mL, 7.4 versus 7.7 per 100 patient-years; 1000-1999 pg/mL, 9.8 versus 11.4 per 100 patient-year; 2000-2999 pg/mL, 13.5 versus 13.4 per 100 patient-years; >/=3000 pg/mL, 22.7 versus 23.0 per 100 patient-years). These findings were consistent whether NT-proBNP was examined as a categorical or continuous variable and before and after adjustment for other prognostic variables. We found similar results for the components of the composite outcome and all-cause mortality. CONCLUSIONS: HF and reduced ejection fraction patients with AF had higher NT-proBNP than those without AF. However, above a concentration of 400 pg/mL (representing most patients in each group), NT-proBNP had similar predictive value for adverse cardiovascular outcomes, irrespective of AF status. CLINICAL TRIAL REGISTRATION: URL: https://www.clinicaltrials.gov. Unique identifier NCT00853658 (ATMOSPHERE) and NCT01035255 (PARADIGM-HF).
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  • Curtain, J. P., et al. (författare)
  • Clinical Outcomes Related to Background Diuretic Use and New Diuretic Initiation in Patients With HFrEF
  • 2022
  • Ingår i: Jacc-Heart Failure. - : Elsevier BV. - 2213-1779. ; 10:6, s. 415-427
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND Up to 20% of patients in heart failure with reduced ejection fraction (HFrEF) trials are not taking diuretic agents at baseline, but little is known about them. OBJECTIVES The aim of this study was to examine outcomes in patients with HFrEF not taking diuretic medications and after diuretic medications are started. METHODS Patient characteristics and outcomes were compared between patients taking or not taking diuretic drugs at baseline in the ATMOSPHERE (Aliskiren Trial of Minimizing Outcomes for Patients With Heart Failure) and PARADIGM-HF (Prospective Comparison of ARNI With ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure Trial) trials combined. Patients starting diuretic medications were also compared with those remaining off diuretic drugs during follow-up. Symptoms (Kansas City Cardiomyopathy Questionnaire Clinical Summary Score [KCCQ-CSS]), hospitalization for worsening heart failure (HF), mortality, and kidney function (estimated glomerular filtration rate slope) were examined. RESULTS At baseline, the 3,079 of 15,415 patients (20%) not taking diuretic medications had a less severe HF profile, less neurohumoral activation, and better kidney function. They were less likely to experience the primary outcome (hospitalization for HF or cardiovascular death) than patients taking diuretic agents (adjusted HR: 0.77; 95% CI: 0.74-0.80; P < 0.001) and death of any cause. Commencement of a diuretic drug was associated with higher subsequent risk for death (adjusted HR: 2.05; 95% CI: 1.99-2.11; P < 0.001) and greater decreases in KCCQ-CSS and estimated glomerular filtration rate. The 5 strongest predictors of initiation of diuretic medications were higher N-terminal pro-B-type natriuretic peptide, higher body mass index, older age, history of diabetes, and worse KCCQ-CSS. In PARADIGM-HF, fewer patients who were treated with sacubitril/valsartan commenced diuretic agents (OR: 0.72; 95% CI: 0.58-0.88; P = 0.002). CONCLUSIONS Patients with HFrEF not taking diuretic medications and those who remained off them had better outcomes than patients treated with diuretic agents or who commenced them. (C) 2022 by the American College of Cardiology Foundation.
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22.
  • Khan, M. S., et al. (författare)
  • Natriuretic peptide plasma concentrations and risk of cardiovascular versus non-cardiovascular events in heart failure with reduced ejection fraction: Insights from the PARADIGM-HF and ATMOSPHERE trials
  • 2021
  • Ingår i: American Heart Journal. - : Elsevier BV. - 0002-8703. ; 237, s. 45-53
  • Tidskriftsartikel (refereegranskat)abstract
    • Background : N-terminal pro-B-type natriuretic peptide (NT-proBNP) plasma concentrations are independent prognostic markers in patients with heart failure and reduced ejection fraction (HFrEF). Whether a differential risk association between NT-proBNP plasma concentrations and risk of cardiovascular (CV) vs non-CV adverse events exists is not well known. Objective : To assess if there is a differential proportional risk of CV vs non-CV adverse events by NT-proBNP plasma concentrations. Methods : In this post hoc combined analysis of PARADIGM-HF and ATMOSPHERE trials, proportion of CV vs non-CV mortality and hospitalizations were assessed by NT-proBNP levels ( <400, 400-999, 1000-1999, 2000-2999, and >3000 pg/mL) at baseline using Cox regression adjusting for traditional risk factors. Results : A total of 14,737 patients with mean age of 62 +/- 8 years (24% history of atrial fibrillation [AF]) were studied. For CV deaths, the event rates per 1000 patient-years steeply increased from 33.8 in the <= 400 pg/mL group to 142.3 in the >= 3000 pg/mL group, while the non-CV death event rates modestly increased from 9.0 to 22.7, respectively. Proportion of non-CV deaths decreased across the 5 NT-proBNP groups (21.1%, 18.4%, 17.9%, 17.4%, and 13.7% respectively). Similar trend was observed for non-CV hospitalizations (46.4%, 42.6%, 42.9%, 42.0%, and 36.9% respectively). These results remained similar when stratified according to the presence of AF at baseline and prior HF hospitalization within last 12 months. Conclusions : The absolute CV event rates per patient years of follow-up were greater and had higher stepwise increases than non-CV event rates across a broad range of NT-proBNP plasma concentrations indicating a differential risk of CV events at varying baseline NT-proBNP values. These results have implications for future design of clinical trials.
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23.
  • Kondo, T., et al. (författare)
  • Predicting stroke in heart failure and reduced ejection fraction without atrial fibrillation
  • 2022
  • Ingår i: European Heart Journal. - : Oxford University Press (OUP). - 0195-668X .- 1522-9645. ; 43:42, s. 4469-4479
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims Patients with heart failure with reduced ejection fraction (HFrEF) are at significant risk of stroke. Anticoagulation reduces this risk in patients with and without atrial fibrillation (AF), but the risk-to-benefit balance in the latter group, overall, is not favourable. Identification of patients with HFrEF, without AF, at the highest risk of stroke may allow targeted and safer use of prophylactic anticoagulant therapy. Methods and results In a pooled patient-level cohort of the PARADIGM-HF, ATMOSPHERE, and DAPA-HF trials, a previously derived simple risk model for stroke, consisting of three variables (history of prior stroke, insulin-treated diabetes, and plasma N-terminal pro-B-type natriuretic peptide level), was validated. Of the 20 159 patients included, 12 751 patients did not have AF at baseline. Among patients without AF, 346 (2.7%) experienced a stroke over a median follow up of 2.0 years (rate 11.7 per 1000 patient-years). The risk for stroke increased with increasing risk score: fourth quintile hazard ratio (HR) 2.35 [95% confidence interval (CI) 1.60-3.45]; fifth quintile HR 3.73 (95% CI 2.58-5.38), with the first quintile as reference. For patients in the top quintile, the rate of stroke was 21.2 per 1000 patient-years, similar to participants with AF not receiving anticoagulation (20.1 per 1000 patient-years). Model discrimination was good with a C-index of 0.84 (0.75-0.91). Conclusion It is possible to identify a subset of HFrEF patients without AF with a stroke-risk equivalent to that of patients with AF who are not anticoagulated. In these patients, the risk-to-benefit balance might justify the use of prophylactic anticoagulation, but this hypothesis needs to be tested prospectively.
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24.
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25.
  • Mogensen, U. M., et al. (författare)
  • Type of Atrial Fibrillation and Outcomes in Patients With Heart Failure and Reduced Ejection Fraction
  • 2017
  • Ingår i: Journal of the American College of Cardiology. - : Elsevier BV. - 0735-1097 .- 1558-3597. ; 70:20, s. 2490-2500
  • Tidskriftsartikel (refereegranskat)abstract
    • BACKGROUND: Atrial fibrillation (AF) is common in heart failure (HF), but the outcome by type of AF is largely unknown. OBJECTIVES: This study investigated outcomes related to type of AF (paroxysmal, persistent or permanent, or new onset) in 2 recent large trials in patients with HF with reduced ejection fraction. METHODS: The study analyzed patients in the PARADIGM-HF (Prospective comparison of ARNI with ACEI to Determine Impact on Global Mortality and morbidity in Heart Failure) and ATMOSPHERE (Aliskiren Trial to Minimize Outcomes in Patients with Heart Failure) trials. Multivariable Cox regression models were used to estimate hazard ratios (HRs) for outcomes related to AF type. RESULTS: Of 15,415 patients, 5,481 (35.6%) had a history of AF at randomization, and of these, 1,645 (30.0%) had paroxysmal AF. Compared with patients without AF, patients with paroxysmal AF at randomization had a higher risk of the primary composite endpoint of cardiovascular death or HF hospitalization (HR: 1.20; 95% confidence interval [CI]: 1.09 to 1.32; p < 0.001), HF hospitalization (HR: 1.34; 95% CI: 1.19 to 1.51; p < 0.001), and stroke (HR: 1.34; 95% CI: 1.02 to 1.76; p = 0.037), whereas the corresponding risks in patients with persistent or permanent AF were not elevated. Neither type of AF was associated with higher mortality. New onset AF was associated with the greatest risk of adverse outcomes: primary endpoint (HR: 2.21; 95% CI: 1.80 to 2.71), HF hospitalization (HR: 2.11; 95% CI: 1.58 to 2.81), stroke (HR: 2.20; 95% CI: 1.25 to 3.88), and all-cause mortality (HR: 2.26; 95% CI: 1.86 to 2.74), all p values < 0.001, compared with patients without AF. Anticoagulants were used less often in patients with paroxysmal (53%) and new onset (16%) AF than in patients with persistent or permanent AF (71%). CONCLUSIONS: Among HF patients with a history of AF, those with paroxysmal AF were at greater risk of HF hospitalization and stroke than were patients with persistent or permanent AF, underlining the importance of anticoagulant therapy. New onset AF was associated with increased risk of all outcomes. (Prospective comparison of ARNI with ACEI to Determine Impact on Global Mortality and Morbidity in Heart Failure [PARADIGM-HF]; NCT01035255) (Aliskiren Trial to Minimize Outcomes in Patients with Heart Failure [ATMOSPHERE]; NCT00853658).
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26.
  • Swedberg, Karl, 1944, et al. (författare)
  • Successful treatment of heart failure with devices requires collaboration
  • 2008
  • Ingår i: European Journal of Heart Failure. - : Wiley. - 1388-9842. ; 10:12, s. 1229-35
  • Tidskriftsartikel (refereegranskat)abstract
    • Implanted biventricular pacemakers (cardiac resynchronisation therapy, CRT) with or without implantable cardioverter defibrillators (ICD) improve survival and morbidity in some patients with chronic heart failure (CHF) who are optimally treated with pharmacologic agents according to current guidelines. Correspondingly, ICDs improve survival. However, there is only limited evidence for device treatment in certain patient subgroups, such as the impact of ICD on outcomes in patients with reduced ejection fraction in New York Heart Association (NYHA) Class I or IV heart failure. Similarly, limited evidence exists for CRT in patients with only modest QRS prolongation or only modestly reduced ejection fraction. Despite evidence for a beneficial effect of device therapy in CHF, only a minority of eligible patients are currently offered these options. Multiple reasons contribute to the underuse of these potentially life-saving therapies. A lack of adherence to guidelines by health care professionals is an important barrier. Clearly, efforts should be made to improve the standard of care and to familiarise all physicians involved in managing CHF patients with the indications and potential efficacy of these devices. Increased collaboration between structured heart failure care and pacemaker clinics as well as between electrophysiologists, heart failure clinicians, and primary care physicians is required. Such team collaborations should lead to improved care with reduced mortality and morbidity and increased cost effectiveness. Treatment strategy should be based on a structured approach tailored to local practice and national priorities.
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31.
  • Dewan, Pooja, et al. (författare)
  • Heart failure with reduced ejection fraction: comparison of patient characteristics and clinical outcomes within Asia and between Asia, Europe and the Americas.
  • 2019
  • Ingår i: European journal of heart failure. - : Wiley. - 1879-0844 .- 1388-9842. ; 21:5, s. 577-587
  • Tidskriftsartikel (refereegranskat)abstract
    • Nearly 60% of the world's population lives in Asia but little is known about the characteristics and outcomes of Asian patients with heart failure with reduced ejection fraction (HFrEF) compared to other areas of the world.We pooled two, large, global trials, with similar design, in 13174 patients with HFrEF (patient distribution: China 833, India 1390, Japan 209, Korea 223, Philippines 223, Taiwan 199 and Thailand 95, Western Europe 3521, Eastern Europe 4758, North America 613, and Latin America 1110). Asian patients were younger (55.0-63.9years) than in Western Europe (67.9years) and North America (66.6years). Diuretics and devices were used less, and digoxin used more, in Asia. Mineralocorticoid receptor antagonist use was higher in China (66.3%), the Philippines (64.1%) and Latin America (62.8%) compared to Europe and North America (range 32.8% to 49.6%). The rate of cardiovascular death/heart failure hospitalization was higher in Asia (e.g. Taiwan 17.2, China 14.9 per 100patient-years) than in Western Europe (10.4) and North America (12.8). However, the adjusted risk of cardiovascular death was higher in many Asian countries than in Western Europe (except Japan) and the risk of heart failure hospitalization was lower in India and in the Philippines than in Western Europe, but significantly higher in China, Japan, and Taiwan.Patient characteristics and outcomes vary between Asia and other regions and between Asian countries. These variations may reflect several factors, including geography, climate and environment, diet and lifestyle, health care systems, genetics and socioeconomic influences.
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32.
  • Dewan, Pooja, et al. (författare)
  • Impact of multimorbidity on mortality in heart failure with reduced ejection fraction: which comorbidities matter most? An analysis of PARADIGM-HF and ATMOSPHERE
  • 2023
  • Ingår i: European Journal of Heart Failure. - 1388-9842 .- 1879-0844. ; 25:5, s. 687-97
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims: Multimorbidity, the coexistence of two or more chronic conditions, is synonymous with heart failure (HF). How risk related to comorbidities compares at individual and population levels is unknown. The aim of this study is to examine the risk related to comorbidities, alone and in combination, both at individual and population levels. Methods and results: Using two clinical trials in HF–the Prospective comparison of ARNI (Angiotensin Receptor–Neprilysin Inhibitor) with ACEI (Angiotensin-Converting Enzyme Inhibitor) to Determine Impact on Global Mortality and morbidity in HF trial (PARADIGM-HF) and the Aliskiren Trial to Minimize Outcomes in Patients with Heart Failure trials (ATMOSPHERE)–we identified the 10 most common comorbidities and examined 45 possible pairs. We calculated population attributable fractions (PAF) for all-cause death and relative excess risk due to interaction with Cox proportional hazard models. Of 15 066 patients in the study, 14 133 (93.7%) had at least one and 11 867 (78.8%) had at least two of the 10 most prevalent comorbidities. The greatest individual risk among pairs was associated with peripheral artery disease (PAD) in combination with stroke (hazard ratio [HR] 1.73; 95% confidence interval [CI] 1.28–2.33) and anaemia (HR 1.71; 95% CI 1.39–2.11). The combination of chronic kidney disease (CKD) and hypertension had the highest PAF (5.65%; 95% CI 3.66–7.61). Two pairs demonstrated significant synergistic interaction (atrial fibrillation with CKD and coronary artery disease, respectively) and one an antagonistic interaction (anaemia and obesity). Conclusions: In HF, the impact of multimorbidity differed at the individual patient and population level, depending on the prevalence of and the risk related to each comorbidity, and the interaction between individual comorbidities. Patients with coexistent PAD and stroke were at greatest individual risk whereas, from a population perspective, coexistent CKD and hypertension mattered most.
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33.
  • Docherty, Kieran F, et al. (författare)
  • Relationship between heart rate and outcomes in patients in sinus rhythm or atrial fibrillation with heart failure and reduced ejection fraction.
  • 2020
  • Ingår i: European journal of heart failure. - : Wiley. - 1879-0844 .- 1388-9842. ; 22:3, s. 528-538
  • Tidskriftsartikel (refereegranskat)abstract
    • To investigate the relationship between heart rate and outcomes in heart failure and reduced ejection fraction (HFrEF) patients in sinus rhythm (SR) and atrial fibrillation (AF) adjusting for natriuretic peptide concentration, a powerful prognosticator.Of 13562 patients from two large HFrEF trials, 10113 (74.6%) were in SR and 3449 (25.4%) in AF. The primary endpoint was the composite of cardiovascular death or heart failure hospitalization. Heart rate was analysed as a categorical (tertiles, T1-3) and continuous variable (per 10bpm), separately in patients in SR and AF. Outcomes were adjusted for prognostic variables, including N-terminal prohormone of B-type natriuretic peptide (NT-proBNP), and also examined using change from baseline heart rate to 1year (≤-10bpm, ≥+10bpm, <±10bpm). SR patients with a higher heart rate had worse symptoms and quality of life, more often had diabetes and higher NT-proBNP concentrations. They had higher risk of the primary endpoint [T3 vs. T1 adjusted hazard ratio (HR) 1.50, 95% confidence interval (CI) 1.35-1.66; P<0.001; per 10bpm: 1.12, 95% CI 1.09-1.16; P<0.001]. In SR, heart rate was associated with a relatively higher risk of pump failure than sudden death (adjusted HR per 10bpm 1.17, 95% CI 1.09-1.26; P<0.001 vs. 1.07, 95% CI 1.02-1.13; P=0.011). Heart rate was not predictive of any outcome in AF.In HFrEF, an elevated heart rate was an independent predictor of adverse cardiovascular outcomes in patients in SR, even after adjustment for NT-proBNP. There was no relationship between heart rate and outcomes in AF.ClinicalTrials.gov Identifiers NCT01035255 and NCT00853658.
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34.
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35.
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36.
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37.
  • Wagenaar, Kim P., et al. (författare)
  • Effectiveness of an interactive platform, and the ESC/HFA website in patients with heart failure: design of the multicentre randomized e-Vita heart failure trial
  • 2015
  • Ingår i: European Journal of Heart Failure. - : WILEY-BLACKWELL. - 1388-9842 .- 1879-0844. ; 17:12, s. 1310-1316
  • Tidskriftsartikel (refereegranskat)abstract
    • AimsElectronic health support (e-health) may improve self-care of patients with heart failure (HF). We aim to assess whether an adjusted care pathway with replacement of routine consultations by e-health improves self-care as compared with usual care. In addition, we will determine whether the ESC/HFA (European Society of Cardiology/Heart Failure Association) website (HFM website) improves self-care when added to usual care. Finally, we aim to evaluate the cost-effectiveness of these interventions. MethodsA three-arm parallel randomized trial will be conducted. Arm 1 consists of usual care; arm 2 consists of usual care plus the HFM website; and arm 3 is the adjusted care pathway with an interactive platform for disease management (e-Vita platform), with a link to the HFM website, which replaces routine consultations with HF nurses at the outpatient clinic. In total, 414 patients managed in 10 Dutch HF outpatient clinics or in general practice will be included and followed for 12 months. Participants are included if they have had an established diagnosis of HF for at least 3 months. The primary outcome is self-care as measured by the European Heart Failure Self-care Behaviour scale (EHFScB scale). Secondary outcomes are quality of life, cardiovascular- and HF-related mortality, hospitalization, and its duration as captured by hospital and general practitioner registries, use of and user satisfaction with the HFM website, and cost-effectiveness. PerspectiveThis study will provide important prospective data on the impact and cost-effectiveness of an interactive platform for disease management and the HFM website. Clinical Trial Registrationunique identifier: NCT01755988
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38.
  • Wagenaar, Kim P., et al. (författare)
  • Effectiveness of the European Society of Cardiology/Heart Failure Association website heartfailurematters.org and an e-health adjusted care pathway in patients with stable heart failure: results of the e-Vita HF randomized controlled trial
  • 2019
  • Ingår i: European Journal of Heart Failure. - : WILEY. - 1388-9842 .- 1879-0844. ; 21:2, s. 238-246
  • Tidskriftsartikel (refereegranskat)abstract
    • Background Efficient incorporation of e-health in patients with heart failure (HF) may enhance health care efficiency and patient empowerment. We aimed to assess the effect on self-care of (i) the European Society of Cardiology/Heart Failure Association website on top of usual care, and (ii) an e-health adjusted care pathway leaving out in person routine HF nurse consultations in stable HF patients. Methods and results In a three-group parallel-randomized trial in stable HF patients from nine Dutch outpatient clinics, we compared two interventions ( website and an e-health adjusted care pathway) to usual care. The primary outcome was self-care measured with the European Heart Failure Self-care Behaviour Scale. Secondary outcomes were health status, mortality, and hospitalizations. In total, 450 patients were included. The mean age was 66.8 +/- 11.0 years, 74.2% were male, and 78.8% classified themselves as New York Heart Association I or II at baseline. After 3 months of follow-up, the mean score on the self-care scale was significantly higher in the groups using the website and the adjusted care pathway compared to usual care (73.5 vs. 70.8, 95% confidence interval 0.6-6.2; and 78.2 vs. 70.8, 95% confidence interval 3.8- 9.4, respectively). The effect attenuated, until no differences after 1 year between the groups. Quality of life showed a similar pattern. Other secondary outcomes did not clearly differ between the groups. Conclusions Both the website and an e-health adjusted care pathway improved self-care in HF patients on the short term, but not on the long term. Continuous updating of e-health facilities could be helpful to sustain effects.
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39.
  • Wagenaar, Kim P., et al. (författare)
  • heartfailurematters.org, an educational website for patients and carers from the Heart Failure Association of the European Society of Cardiology: objectives, use and future directions
  • 2017
  • Ingår i: European Journal of Heart Failure. - : WILEY. - 1388-9842 .- 1879-0844. ; 19:11, s. 1447-1454
  • Tidskriftsartikel (refereegranskat)abstract
    • Aims In 2007, the Heart Failure Association of the European Society of Cardiology (ESC) launched the information website heartfailurematters.org (HFM site) with the aim of creating a practical tool through which to provide advice and guidelines for living with heart failure to patients, their carers, health care professionals and the general public worldwide. The website is managed by the ESC at the European Heart House and is currently available in nine languages. The aim of this study is to describe the background, objectives, use, lessons learned and future directions of the HFM site. Methods and results Data on the number of visitor sessions on the site as measured by Google Analytics were used to explore use of the HFM site from 2010 to 2015. Worldwide, the annual number of sessions increased from 416 345 in 2010 to 1 636 368 in 2015. Most users (72-75%) found the site by using a search engine. Desktops and, more recently, smartphones were used to visit the website, accounting for 50% and 38%, respectively, of visits to the site in 2015. Conclusions Although its use has increased, the HFM site has not yet reached its full potential: fewer than 2 million users have visited the website, whereas the number of people living with heart failure worldwide is estimated to be 23 million. Uptake and use could be further improved by a continuous process of qualitative assessment of users preferences, and the provision of professional helpdesk facilities, comprehensive information technology, and promotional support.
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