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Background: Elamipretide, a novel mitochondrial modulating agent, improves myocardial energetics; however, it is unknown whether this mechanistic benefit translates into improved cardiac structure and function in heart failure (HF) with reduced ejection fraction (HFrEF). The objective of this study was to evaluate the effects of multiple subcutaneous doses of elamipretide on left ventricular end systolic volume (LVESV) as assessed by cardiac magnetic resonance imaging. Methods: We randomized 71 patients with HFrEF (LVEF ≤ 40%) in a double-blind, placebo-controlled trial in a 1:1:1 ratio to receive placebo, 4 mg or 40 mg elamipretide once daily for 28 consecutive days. Results: The mean age (standard deviation) of the study population was 65 ± 10 years, 24% were females, and the mean EF was 31% ± 7%. The change in LVESV from baseline to week 4 was not significantly different between elamipretide 4 mg (89.4 mL to 85 mL; difference, −4.4 mL) or 40 mg (77.9 mL to 76.6 mL; difference, −1.2 mL) compared with placebo (77.7 mL to 74.6 mL; difference, −3.8 mL) (4 mg vs placebo: difference of means, −0.3; 95% CI, −4.6 to 4.0; P = 0.90; and 40 mg vs placebo: difference of means, 2.3; 95% CI, −1.9 to 6.5; P = 0.28). Also, no significant differences in change in LVESV and LVEF were observed between placebo and either of the elamipretide groups. Rates of any study drug-related adverse events were similar in the 3 groups. Conclusions: Elamipretide was well tolerated but did not improve LVESV at 4 weeks in patients with stable HFrEF compared with placebo. © 2020

Aims: Troponin levels are commonly elevated among patients hospitalized for heart failure (HF), but the prevalence and prognostic significance of early post-discharge troponin elevation are unclear. This study sought to describe the frequency and prognostic value of pre-discharge and post-discharge troponin elevation, including persistent troponin elevation from the inpatient to outpatient settings. Methods and results: The ASTRONAUT trial (NCT00894387; http://www.clinicaltrials.gov) enrolled hospitalized HF patients with ejection fraction ≤40% and measured troponin I prior to discharge (i.e. study baseline) and at 1-month follow-up in a core laboratory (elevation defined as >0.04 ng/mL). This analysis included 1469 (91.0%) patients with pre-discharge troponin data. Overall, 41.5% and 29.9% of patients had elevated pre-discharge [median: 0.09 ng/mL; interquartile range (IQR): 0.06–0.19 ng/mL] and 1-month (median: 0.09 ng/mL; IQR: 0.06–0.15 ng/mL) troponin levels, respectively. Among patients with pre-discharge troponin elevation, 60.4% had persistent elevation at 1 month. After adjustment, pre-discharge troponin elevation was not associated with 12-month clinical outcomes. In contrast, 1-month troponin elevation was independently predictive of increased all-cause mortality [hazard ratio (HR) 1.59, 95% confidence interval (CI) 1.18–2.13] and cardiovascular mortality or HF hospitalization (HR 1.28, 95% CI 1.03–1.58) at 12 months. Associations between 1-month troponin elevation and outcomes were similar among patients with newly elevated (i.e. normal pre-discharge) and persistently elevated levels (interaction P ≥ 0.16). The prognostic value of 1-month troponin elevation for 12-month mortality was driven by a pronounced association among patients with coronary artery disease (interaction P = 0.009). Conclusions: In this hospitalized HF population, troponin I elevation was common during index hospitalization and at 1-month follow-up. Elevated troponin I level at 1 month, but not pre-discharge, was independently predictive of increased clinical events at 12 months. Early post-discharge troponin I measurement may offer a practical means of risk stratification and should be investigated as a therapeutic target.

Multiple drug classes have shown incremental benefits in heart failure with reduced ejection fraction. Most of these trials were designed to achieve specific doses of the investigational agent. Clinical practice guidelines recommend using the same target dosing of therapies, as tolerated. However, with the increasing number of available therapies, clinicians face the challenge of simultaneously using several drugs, achieving target doses, and managing side effects that are often overlapping. Blood pressure, renal function, hyperkalaemia, and other factors may impede achieving target doses of all medications, leaving clinicians with dilemmas as to how to sequence and dose these various classes of drugs. The guideline-directed eligibility for certain drugs and devices requires stability on maximally tolerated doses of background therapies. However, significant variability exists in dosing achieved in clinical practice. We discuss the existing background data regarding the doses of heart failure medications in clinical trials and in practice, and provide recommendations on how to navigate this complex therapeutic decision-making. © 2018 The Authors. European Journal of Heart Failure © 2018 European Society of Cardiology

ACCF : American College of Cardiology Foundation ACS : acute coronary syndrome AHA : American Heart Association CAD : coronary artery disease CABG : coronary artery bypass grafting CKMB : creatine kinase MB isoform cTn : cardiac troponin CT : computed tomography CV : coefficient of variation ECG : electrocardiogram ESC : European Society of Cardiology FDG : fluorodeoxyglucose h : hour(s) HF : heart failure LBBB : left bundle branch block LV : left ventricle LVH : left ventricular hypertrophy MI : myocardial infarction mIBG : meta-iodo-benzylguanidine min : minute(s) MONICA : Multinational MONItoring of trends and determinants in CArdiovascular disease) MPS : myocardial perfusion scintigraphy MRI : magnetic resonance imaging mV : millivolt(s) ng/L : nanogram(s) per litre Non-Q MI : non-Q wave myocardial infarction NSTEMI : non-ST-elevation myocardial infarction PCI : percutaneous coronary intervention PET : positron emission tomography pg/mL : pictogram(s) per millilitre Q wave MI : Q wave myocardial infarction RBBB : right bundle branch block sec : second(s) SPECT : single photon emission computed tomography STEMI : ST elevation myocardial infarction ST–T : ST-segment –T wave URL : upper reference limit WHF : World Heart Federation WHO : World Health Organization Myocardial infarction (MI) can be recognised by clinical features, including electrocardiographic (ECG) findings, elevated values of biochemical markers (biomarkers) of myocardial necrosis, and by imaging, or may be defined by pathology. It is a major cause of death and disability worldwide. MI may be the first manifestation of coronary artery disease (CAD) or it may occur, repeatedly, in patients with established disease. Information on MI rates can provide useful information regarding the burden of CAD within and across populations, especially if standardized data are collected in a manner that …

We studied safety and tolerability of neladenoson bialanate, a novel oral selective partial adenosine A1 receptor agonist that maintains the cardioprotective effects of adenosine without the undesired side effects of a full agonist, in 2 pilot studies in patients with heart failure with reduced ejection fraction (HFrEF). The beta-blocker interaction study was a single-blind, placebo-controlled study on the effects of a 30-mg single dose of neladenoson bialanate on atrioventricular (AV) conduction in 11 patients with HFrEF treated with beta-blockers. The PARSiFAL pilot study was a double-blind, placebo-controlled study on the effects of a 7-day treatment with 10 or 20 mg neladenoson bialanate or placebo in 31 patients with HFrEF on beta-blocker therapy. In the beta-blocker interaction study with 11 HFrEF patients, no second-or third-degree AV block was detected on 48-hour Holter monitoring. In the 31 HFrEF patients included in the PARSiFAL pilot study, no second-or third-degree AV blocks were observed during 24-hour Holter monitoring, and no effects were seen on heart rate and blood pressure. Median absolute changes in LVEF, measured by cardiac magnetic resonance, were 1.9% (interquartile range-1.1 to 4.3), 0.3% (-1.4 to 2.7), and 2.2% (0.4 to 4.5), in the placebo, 10-mg, and 20-mg groups, respectively. Treatment of HFrEF patients with the novel partial adenosine A1 agonist neladenoson bialanate appeared to be safe in 2 small pilot studies, and no atrioventricular conduction disorders or neurological side effects were observed. No significant early changes in cardiac function were detected.

Acute heart failure (HF) is a global pandemic with more than one million admissions to hospital annually in the US and millions more worldwide. Post-discharge mortality and readmission rates remain unchanged and unacceptably high. Although recent drug development programmes have failed to deliver novel therapies capable of reducing cardiovascular morbidity and mortality in patients hospitalized for worsening chronic HF, hospitalized HF registries and clinical trial databases have generated a wealth of information improving our collective understanding of the HF syndrome. This review will summarize key insights from clinical trials in acute HF and hospitalized HF registries over the last several decades, focusing on improving the management of patients with HF and reduced ejection fraction.

Aims In the EVEREST trial, tolvaptan improved symptoms and body weight during hospitalization for heart failure (HF), but did not improve post-discharge cardiovascular outcomes. We hypothesized that this disconnect between the short- and long-term effects may be related to changes in serum osmolality. We describe the longitudinal profile of osmolality and its response to tolvaptan during and after hospitalization for HF. Methods and results EVEREST enrolled 4133 patients hospitalized for HF and reduced EF. Serum osmolality data were available in 3744 (91%). We assessed the effects of tolvaptan on serum osmolality and related these effects to in-hospital changes in body weight and physician-assessed symptoms. Calculated values of osmolality, determined from serum sodium, blood urea nitrogen, and glucose, were 3-4 mOsm/kg higher than concurrently measured serum osmolality at enrolment and discharge in both treatment arms. During hospitalization in the placebo group, serum osmolality slightly increased throughout hospitalization, whereas serum sodium decreased and blood urea nitrogen increased until discharge. Tolvaptan increased osmolality by hospital day 1, but this effect diminished by post-discharge week 4-8 and disappeared by post-discharge week 56. In-hospital changes in osmolality were poorly correlated with in-hospital changes in body weight and physician-assessed dyspnoea. Conclusion Tolvaptan increased serum osmolality during hospitalization for HF, a time frame when the drug also improved signs and symptoms of HF. However, this effect on osmolality declined in the early post-discharge period, when tolvaptan failed to influence clinical outcomes. Serum osmolality, which can be estimated based on readily available laboratory parameters, may be a marker or a target of response to tolvaptan.

Aims To determine tolerability and the optimal dose regimen of the soluble guanylate cyclase stimulator vericiguat in patients with chronic heart failure and preserved ejection fraction (HFpEF). Methods and results SOCRATES-PRESERVED was a prospective, randomized, placebo-controlled double-blind, Phase 2b dose-finding study in patients with HFpEF (ejection fraction ≥ 45%). Patients received vericiguat once daily at 1.25 or 2.5 mg fixed doses, or 5 or 10mg titrated from a 2.5 mg starting dose, or placebo for 12 weeks. The two primary endpoints were change from baseline in log-transformed N-terminal pro-B-type natriuretic peptide (NT-ProBNP) and left atrial volume (LAV) at 12 weeks. Patients (N= 477; 48% women; mean age 73 ± 10 years; baseline atrial fibrillation 40%) were randomized within 4 weeks of HF hospitalization (75%) or outpatient treatment with intravenous diuretics for HF (25%) to vericiguat (n = 384) or placebo (n = 93). In the pooled three highest dose arms change in logNT-proBNP (vericiguat:0.038 ± 0.782 log(pg/mL), n = 195; placebo: -0.098 ± 0.778 log(pg/mL), n = 73; one-sided P = 0.8991, two-sided P = 0.2017), and change in LAV [vericiguat: -1.7 ± 12.8 mL (n = 194); placebo: -3.4 ± 12.7 mL (n = 67), one-sided P = 0.8156, two-sided P = 0.3688] were not different from placebo. Vericiguat was well tolerated (adverse events: vericiguat 10 mg arm, 69.8%; placebo, 73.1%), with low discontinuation rates in all groups, and no changes in blood pressure at 10 mg compared with placebo. The pre-specified exploratory endpoint of Kansas City Cardiomyopathy Questionnaire Clinical Summary Score improved in the vericiguat 10 mg arm by mean 19.3 ± 16.3 points [median 19.8 (interquartile range 10.4-30.7)] from baseline (mean difference from placebo 9.2 points). Conclusion Vericiguat was well tolerated, did not change NT-proBNP and LAV at 12 weeks compared with placebo but was associated with improvements in quality of life in patients with HFpEF. Given the encouraging results on quality of life, the effects of vericiguat in patients with HFpEF warrant further study, possibly with higher doses, longer follow-up and additional endpoints. © The Author 2016. Published by Oxford University Press on behalf of the European Society of Cardiology.

Aims: Exploratory assessment of the potential benefits of the novel soluble guanylate cyclase stimulator vericiguat on health status in patients with heart failure (HF) with preserved ejection fraction. Methods and results: The SOCRATES-PRESERVED trial randomized patients with chronic HF and ejection fraction ≥ 45% within 4 weeks of decompensation to 12 weeks of treatment with titrated doses of vericiguat (1.25, 2.5, 5, and 10 mg once daily) or placebo. Health status was assessed with the disease-specific Kansas City Cardiomyopathy Questionnaire (KCCQ) and the generic health-related quality of life measure EQ-5D. In total, 477 patients were randomized 12.9 ± 9.0 days after hospitalization or if requiring outpatient treatment with intravenous diuretics for HF. Baseline KCCQ clinical summary score (CSS), a combination of symptom and physical function domains, was 52.3 ± 20.4 in the 10 mg arm and 54.1 ± 23.0 in placebo, and EQ-5D US index score was 0.74 ± 0.2 and 0.73 ± 0.2, respectively. A larger proportion of patients treated with vericiguat in the 10 mg arm, compared with placebo, achieved clinically meaningful improvements in KCCQ-CSS (82.0% vs. 59.0%, number needed to treat = 4.35, P = 0.0052). Important domains of the KCCQ as well as EQ-5D scores demonstrated a dose-dependent relationship with vericiguat. In the 10 mg arm, the mean physical limitations domain increased by +17.2 ± 19.1 at 12 weeks, compared with +4.5 ± 21.6 in placebo (P = 0.0009). The EQ-5D US index score increased by +0.064 ± 0.167 in the 10 mg arm, compared with a decrease of −0.009 ± 0.195 in placebo (P = 0.0461). Improvements in KCCQ and EQ-5D scores paralleled physician-assessed NYHA class and clinical congestion. Conclusion: Vericiguat, in exploratory hypothesis-generating analyses, was associated with clinically important improvements in patients' health status, as assessed by the KCCQ and EQ-5D. Further studies should be conducted to test the hypothesis that vericiguat improves physical functioning and health-related quality of life in patients with HF with preserved ejection fraction. © 2017 The Authors. European Journal of Heart Failure © 2017 European Society of Cardiology

Heart failure is a pressing worldwide public-health problem with millions of patients having worsening heart failure. Despite all the available therapies, the condition carries a very poor prognosis. Existing therapies provide symptomatic and clinical benefit, but do not fully address molecular abnormalities that occur in cardiomyocytes. This shortcoming is particularly important given that most patients with heart failure have viable dysfunctional myocardium, in which an improvement or normalization of function might be possible. Although the pathophysiology of heart failure is complex, mitochondrial dysfunction seems to be an important target for therapy to improve cardiac function directly. Mitochondrial abnormalities include impaired mitochondrial electron transport chain activity, increased formation of reactive oxygen species, shifted metabolic substrate utilization, aberrant mitochondrial dynamics, and altered ion homeostasis. In this Consensus Statement, insights into the mechanisms of mitochondrial dysfunction in heart failure are presented, along with an overview of emerging treatments with the potential to improve the function of the failing heart by targeting mitochondria. © 2017 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.

Despite all available therapies, the rates of hospitalization and death from heart failure (HF) remain unacceptably high. The most common reasons for hospital admission are symptoms related to congestion. During hospitalization, most patients respond well to standard therapy and are discharged with significantly improved symptoms. Post-discharge, many patients receive diligent and frequent follow-up. However, rehospitalization rates remain high. One potential explanation is a persistent failure by clinicians to adequately manage congestion in the outpatient setting. The failure to successfully manage these patients post-discharge may represent an unmet need to improve the way congestion is both recognized and treated. A primary aim of future HF management may be to improve clinical surveillance to prevent and manage chronic fluid overload while simultaneously maximizing the use of evidence-based therapies with proven long-term benefit. Improvement in cardiac function is the ultimate goal and maintenance of a ‘‘dry’’ clinical profile is important to prevent hospital admission and improve prognosis. This paper focuses on methods for monitoring congestion, and strategies for water and sodium management in the context of the complex interplay between the cardiac and renal systems. A rationale for improving recognition and treatment of congestion is also proposed.

Aims To evaluate oral doses of the non-steroidal mineralocorticoid receptor antagonist finerenone given for 90 days in patients with worsening heart failure and reduced ejection fraction and chronic kidney disease and/or diabetes mellitus. Methods and results Miner Alocorticoid Receptor antagonist Tolerability Study-Heart Failure (ARTS-HF) was a randomized, double-blind, phase 2b multicentre study (ClinicalTrials.gov: NCT01807221). Of 1286 screened patients, 1066 were randomized. Patients received oral, once-daily finerenone (2.5, 5, 7.5, 10, or 15 mg, uptitrated to 5, 10, 15, 20, or 20 mg, respectively, on Day 30) or eplerenone (25 mg every other day, increased to 25 mg once daily on Day 30, and to 50 mg once daily on Day 60) for 90 days. The primary endpoint was the percentage of individuals with a decrease of >30% in plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) from baseline to Day 90. A key exploratory endpoint was a composite clinical endpoint of death from any cause, cardiovascular hospitalizations, or emergency presentation for worsening HF until Day 90. Mean age ranged from 69.2 to 72.5 years in different treatment groups (standard deviation 9.7-10.6 years). Decreases in NT-proBNP of >30% from baseline occurred in 37.2% of patients in the eplerenone group and 30.9, 32.5, 37.3, 38.8, and 34.2% in the 2.5â †'5, 5â †'10, 7.5â †'15, 10â †'20, and 15â †'20 mg finerenone groups, respectively (P = 0.42-0.88). Except for the 2.5â †'5 mg finerenone group, the composite clinical endpoint occurred numerically less frequently in finerenone-treated patients compared with eplerenone; this difference reached nominal statistical significance in the 10â †'20 mg group (hazard ratio 0.56, 95% confidence interval, CI, 0.35; 0.90; nominal P = 0.02), despite the fact that this phase 2 study was not designed to detect statistical significant differences. A potassium level increase to ≥5.6 mmol/L at any time point occurred in 4.3% of patients, with a balanced distribution among all treatment groups. Conclusion Finerenone was well tolerated and induced a 30% or greater decrease in NT-proBNP levels in a similar proportion of patients to eplerenone. The finding of reduced clinical events in the finerenone 10â †'20 mg group should be further explored in a large outcomes trial. © The Author 2016.

Acute worsening heart failure (WHF) is seen in a sizable portion of patients hospitalized for heart failure, and is increasingly being recognized as an entity that is associated with an adverse in-hospital course. WHF is generally defined as worsening heart failure symptoms and signs requiring an intensification of therapy, and is reported to be seen in anywhere from 5% to 42% of heart failure admissions. It is difficult to ascertain the exact epidemiology of WHF due to varying definitions used in the literature. Studies indicate that WHF cannot be precisely predicted on the basis of baseline variables assessed at the time of admission. Recent data suggest that some experimental therapies may reduce the risk of development of WHF among hospitalized heart failure patients, and this is associated with a reduction in risk of subsequent post-discharge cardiovascular mortality. In this respect, WHF holds promise as a endpoint for acute heart failure clinical trials to better elucidate the benefit of targeted novel therapies. Better understanding of the pathophysiology and a consensus on the definition of WHF will further improve our epidemiological and clinical understanding of this entity. © 2015 The Authors. © 2015 European Society of Cardiology.

IMPORTANCE Worsening chronic heart failure (HF) is a major public health problem. OBJECTIVE To determine the optimal dose and tolerability of vericiguat, a soluble guanylate cyclase stimulator, in patients with worsening chronic HF and reduced left ventricular ejection fraction (LVEF). DESIGN, SETTING, AND PARTICIPANTS Dose-finding phase 2 study that randomized 456 patients acrossEurope,North America,andAsiabetweenNovember2013andJanuary2015, with follow-up ending June 2015. Patientswere clinically stable with LVEF less than 45%within 4weeks of a worseningchronicHFevent, defined asworseningsignsandsymptomsofcongestionandelevated natriuretic peptide level requiring hospitalization or outpatient intravenous diuretic. INTERVENTIONS Placebo (n = 92) or 1 of 4 daily target doses of oral vericiguat (1.25mg [n = 91], 2.5mg [n = 91], 5mg [n = 91], 10mg [n = 91]) for 12 weeks. MAIN OUTCOMES AND MEASURES The primary end pointwas change from baseline toweek 12 in log-transformed level of N-terminal pro-B-type natriuretic peptide (NT-proBNP). The primary analysis specified pooled comparison of the 3 highest-dose vericiguat groups with placebo, and secondary analysis evaluated a dose-response relationship with vericiguat and the primary end point. RESULTS Overall, 351 patients (77.0%) completed treatment with the study drug with valid 12-week NT-proBNP levels and no major protocol deviation and were eligible for primary end point evaluation. In primary analysis, change in log-transformed NT-proBNP levels from baseline to week 12 was not significantly different between the pooled vericiguat group (log-transformed: baseline, 7.969; 12 weeks, 7.567; difference, -0.402; geometric means: baseline, 2890 pg/mL; 12 weeks, 1932 pg/mL) and placebo (log-transformed: baseline, 8.283; 12 weeks, 8.002; difference, -0.280; geometric means: baseline, 3955 pg/mL; 12 weeks, 2988 pg/mL) (difference of means, -0.122; 90% CI, -0.32 to 0.07; ratio of geometric means, 0.885, 90% CI, 0.73-1.08; P = .15). The exploratory secondary analysis suggested a dose-response relationship whereby higher vericiguat doses were associated with greater reductions in NT-proBNP level (P < .02). Rates of any adverse event were 77.2%and 71.4% among the placebo and 10-mg vericiguat groups, respectively. CONCLUSIONS AND RELEVANCE Among patients with worsening chronic HF and reduced LVEF, compared with placebo, vericiguat did not have a statistically significant effect on change in NT-proBNP level at 12 weeks but was well-tolerated. Further clinical trials of vericiguat based on the dose-response relationship in this study are needed to determine the potential role of this drug for patients with worsening chronic HF. Copyright 2015 American Medical Association. All rights reserved.

Worsening chronic heart failure (HF) is a major public health problem.

Importance: Hospitalizations for heart failure (HHF) represent a major health burden, with high rates of early postdischarge rehospitalization and mortality. Objective: To investigate whether aliskiren, a direct renin inhibitor, when added to standard therapy, would reduce the rate of cardiovascular (CV) death or HF rehospitalization among HHF patients. Design, Setting, and Participants: International, double-blind, placebo-controlled study that randomized hemodynamically stable HHF patients a median 5 days after admission. Eligible patients were 18 years or older with left ventricular ejection fraction (LVEF) 40% or less, elevated natriuretic peptides (brain natriuretic peptide [BNP] ≥400 pg/mL or N-terminal pro-BNP [NT-proBNP] ≥1600 pg/mL), and signs and symptoms of fluid overload. Patients were recruited from 316 sites across North and South America, Europe, and Asia between May 2009 and December 2011. The follow-up period ended in July 2012. Intervention: All patients received 150 mg (increased to 300 mg as tolerated) of aliskiren or placebo daily, in addition to standard therapy. The study drug was continued after discharge for a median 11.3 months. Main Outcome Measures: Cardiovascular death or HF rehospitalization at 6 months and 12 months. Results: In total, 1639 patients were randomized, with 1615 patients included in the final efficacy analysis cohort (808 aliskiren, 807 placebo). Mean age was 65 years; mean LVEF, 28%; 41% of patients had diabetes mellitus, mean estimated glomerular filtration rate, 67 mL/min/1.73 m2. At admission and randomization, median NT-proBNP levels were 4239 pg/mL and 2718 pg/mL, respectively. At randomization, patients were receiving diuretics (95.9%), β-blockers (82.5%), angiotensin-converting enzyme inhibitors or angiotensin II receptor blockers (84.2%), and mineralocorticoid receptor antagonists (57.0%). In total, 24.9% of patients receiving aliskiren (77 CV deaths, 153 HF rehospitalizations) and 26.5% of patients receiving placebo (85 CV deaths, 166 HF rehospitalizations) experienced the primary end point at 6 months (hazard ratio [HR], 0.92; 95% CI, 0.76-1.12; P=.41). At 12 months, the event rates were 35.0% for the aliskiren group (126 CV deaths, 212 HF rehospitalizations) and 37.3% for the placebo group (137 CV deaths, 224 HF rehospitalizations; HR, 0.93; 95% CI, 0.79-1.09; P=.36). The rates of hyperkalemia, hypotension, and renal impairment/renal failure were higher in the aliskiren group compared with placebo. Conclusion and Relevance: Among patients hospitalized for HF with reduced LVEF, initiation of aliskiren in addition to standard therapy did not reduce CV death or HF rehospitalization at 6 months or 12 months after discharge. Trial Registration: clinicaltrials.gov Identifier: NCT00894387. ©2013 American Medical Association. All rights reserved.

This article provides a detailed overview of the rationale for key aspects of the protocol of the Digitalis Investigation Group (DIG) trial. It also highlights unusual aspects of the study implementation and the baseline characteristics. The DIG trial is a large, simple, international placebo-controlled trial whose primary objective is to determine the effect of digoxin on all cause mortality in patients with clinical heart failure who are in sinus rhythm and whose ejection fraction isor = 0.45. An ancillary study examines the effect in those with an ejection fraction0.45. Key aspects of the trial include the simplicity of the design, broad eligibility criteria, essential data collection, and inclusion of various types of centers. A total of 302 centers in the United States and Canada enrolled 7788 patients between February 1991 and September 1993. Follow-up continued until December 1995 with the results available in Spring 1996.

Hospitalization for worsening chronic heart failure results in high post-discharge mortality, morbidity, and cost. However, thorough characterization, soon after discharge of patients with early post-discharge events has not been previously performed. The objectives of this study were to describe the baseline, in-hospital, and post-discharge clinical, laboratory, and neurohormonal profiles of patients hospitalized for worsening heart failure with reduced ejection fraction (EF) who die or are re-admitted for cardiovascular (CV) causes within 90 days of initial hospitalization. Retrospective analysis of 4,133 patients hospitalized for worsening heart failure with EF B40% in the Efficacy of Vasopressin Antagonism in Heart Failure: Outcome Study with Tolvaptan (EVEREST) trial, which randomized patients to tolvaptan or placebo, both in addition to standard therapy. Clinical and laboratory parameters were obtained within 48 h of admission, during hospitalization, and post-discharge weeks 1, 4, 8, and every 8 weeks thereafter for a median of 9.9 months. Patients with events within 90 days were compared with those with later/no events. All-cause mortality (ACM) and CV re-hospitalization were independently adjudicated. Within 90 days of admission, 395 patients (9.6%) died and 801 patients (19.4%) were re-hospitalized for CV causes. Significant baseline and longitudinal differences were seen between groups with early versus later ([90 days) or no events at 12 months post-randomization. Post-discharge outcomes were similar in the tolvaptan and placebo groups. Patients with early post-discharge events experienced clinically significant worsening in signs and symptoms, laboratory values, and neurohormonal parameters soon after discharge. Identifying these abnormalities may facilitate efforts to reduce post-discharge mortality and re-hospitalization. © 2011 Springer Science+Business Media, LLC.