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de Oliveira MT, Baptista R, Chavez-Leal SA, Bonatto MG. Heart failure management with β-blockers: can we do better? Curr Med Res Opin 2024; 40:43-54. [PMID: 38597068 DOI: 10.1080/03007995.2024.2318002] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Accepted: 02/08/2024] [Indexed: 04/11/2024]
Abstract
Heart failure (HF) is associated with disabling symptoms, poor quality of life, and a poor prognosis with substantial excess mortality in the years following diagnosis. Overactivation of the sympathetic nervous system is a key feature of the pathophysiology of HF and is an important driver of the process of adverse remodelling of the left ventricular wall that contributes to cardiac failure. Drugs which suppress the activity of the renin-angiotensin-aldosterone system, including β-blockers, are foundation therapies for the management of heart failure with reduced ejection fraction (HFrEF) and despite a lack of specific outcomes trials, are also widely used by cardiologist in patients with HF with preserved ejection fraction (HFpEF). Today, expert opinion has moved away from recommending that treatment for HF should be guided solely by the LVEF and interventions should rather address signs and symptoms of HF (e.g. oedema and tachycardia), the severity of HF, and concomitant conditions. β-blockers improve HF symptoms and functional status in HF and these agents have demonstrated improved survival, as well as a reduced risk of other important clinical outcomes such as hospitalisation for heart failure, in randomised, placebo-controlled outcomes trials. In HFpEF, β-blockers are anti-ischemic and lower blood pressure and heart rate. Moreover, β-blockers also reduce mortality in the setting of HF occurring alongside common comorbid conditions, such as diabetes, CKD (of any severity), and COPD. Higher doses of β-blockers are associated with better clinical outcomes in populations with HF, so that ensuring adequate titration of therapy to their maximal (or maximally tolerated) doses is important for ensuring optimal outcomes for people with HF. In principle, a patient with HF could have combined treatment with a β-blocker, renin-angiotensin-aldosterone system inhibitor/neprilysin inhibitor, mineralocorticoid receptor antagonist, and a SGLT2 inhibitor, according to tolerability.
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Affiliation(s)
- Mucio Tavares de Oliveira
- Heart Institute, Day Hospital and Infusion Center, University of Sao Paulo Medical School, Sao Paulo, Brazil
- Infusion Center and Day Hospital at Heart Institute (InCor), University of Sao Paulo, Sao Paulo, Brazil
| | - Rui Baptista
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
- Center for Innovative Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
- Clinical Academic Center of Coimbra (CACC), Coimbra, Portugal
- Cardiology Department, Centro Hospitalar Entre Douro e Vouga, Santa Maria da Feira, Portugal
| | | | - Marcely Gimenes Bonatto
- Department of Heart Failure and Heart Transplant, Hospital Santa Casa de Misericórdia de, Curitiba, Brazil
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Kuchynka P, Podzimkova J, Marek J, Danek BA, Vitkova I, Kreidlova M, Roblova L, Kovarnik T, Simek S, Horak J, Habasko J, Linhart A, Palecek T. Long-term outcomes and reverse remodelling in recently diagnosed unexplained left ventricular systolic dysfunction. ESC Heart Fail 2024; 11:859-870. [PMID: 38204216 DOI: 10.1002/ehf2.14643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 11/07/2023] [Accepted: 12/05/2023] [Indexed: 01/12/2024] Open
Abstract
AIMS In patients with recently diagnosed non-ischaemic LV systolic dysfunction, left ventricular reverse remodelling (LVRR) and favourable prognosis has been documented in studies with short-term follow-up. The aim of our study was to assess the long-term clinical course and stability of LVRR in these patients. METHODS AND RESULTS We prospectively studied 133 patients (37 women; 55 [interquartile range 46, 61] years) with recently diagnosed unexplained LV systolic dysfunction, with heart failure symptoms lasting <6 months and LV ejection fraction <40% persisting after at least 1 week of therapy. All patients underwent endomyocardial biopsy (EMB) at the time of diagnosis and serial echocardiographic and clinical follow-up over 5 years. LVRR was defined as the combined presence of (1) LVEF ≥ 50% or increase in LVEF ≥ 10% points and (2) decrease in LV end-diastolic diameter index (LVEDDi) ≥ 10% or (3) LVEDDi ≤ 33 mm/m2. LVRR was observed in 46% patients at 1 year, in 60% at 2 years and 50% at 5 years. Additionally, 2% of patients underwent heart transplantation and 12% experienced heart failure hospitalization. During 5-year follow-up, 23 (17%) of the study cohort died. In multivariate analysis, independent predictors of mortality were baseline right atrial size (OR 1.097, CI 1.007-1.196), logBNP level (OR 2.02, CI 1.14-3.56), and PR interval (OR 1.02, CI 1.006-1.035) (P < 0.05 for all). The number of macrophages on EMB was associated with overall survival in univariate analysis only. LVRR at 1 year of follow-up was associated with a lower rate of mortality and heart failure hospitalization (P = 0.025). In multivariate analysis, independent predictors of LVRR were left ventricular end-diastolic volume index (OR 0.97, CI 0.946-0.988), LVEF (OR 0.89, CI 0.83-0.96), and diastolic blood pressure (OR 1.04, CI 1.01-1.08) (P < 0.05 for all). CONCLUSIONS LVRR occurs in over half of patients with recent onset unexplained LV systolic dysfunction during first 2 years of optimally guided heart failure therapy and then remains relatively stable during 5-year follow-up. Normalization of adverse LV remodelling corresponds to a low rate of mortality and heart failure hospitalizations during long-term follow-up.
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Affiliation(s)
- Petr Kuchynka
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Jana Podzimkova
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Josef Marek
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Barbara Anna Danek
- Division of Cardiology, University of Washington Medical Center, Seattle, WA, USA
| | - Ivana Vitkova
- Institute of Pathology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Miluse Kreidlova
- Institute of Medical Biochemistry and Laboratory Diagnostics, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
| | - Lenka Roblova
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Tomas Kovarnik
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Stanislav Simek
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Jan Horak
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Jan Habasko
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Ales Linhart
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
| | - Tomas Palecek
- 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University in Prague and General University Hospital in Prague, Prague, Czech Republic
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Pensa AV, Khan SS, Shah RV, Wilcox JE. Heart failure with improved ejection fraction: Beyond diagnosis to trajectory analysis. Prog Cardiovasc Dis 2024; 82:102-112. [PMID: 38244827 DOI: 10.1016/j.pcad.2024.01.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 01/14/2024] [Indexed: 01/22/2024]
Abstract
Left ventricular (LV) systolic dysfunction represents a highly treatable cause of heart failure (HF). A substantial proportion of patients with HF with reduced ejection fraction (EF;HFrEF) demonstrate improvement in LV systolic function (termed HF with improved EF [HFimpEF]), either spontaneously or when treated with guideline-directed medical therapy (GDMT). Although it is a relatively new HF classification, HFimpEF has emerged in recent years as an important and distinct clinical entity. Improvement in LVEF leads to decreased rates of mortality and adverse HF-related outcomes compared to patients with sustained LV systolic dysfunction (HFrEF). While numerous clinical and imaging factors have been associated with HFimpEF, identification of which patients do and do not improve requires further investigation. In addition, patients improve at different rates, and what determines the trajectory of HFimpEF patients after improvement is incompletely characterized. A proportion of patients maintain improvement in LV systolic function, while others experience a recrudescence of systolic dysfunction, especially with GDMT discontinuation. In this review we discuss the contemporary guideline-recommended classification definition of HFimpEF, the epidemiology of improvement in LV systolic function, and the clinical course of this unique patient population. We also offer evidence-based recommendations for the clinical management of HFimpEF and provide a roadmap for future directions in understanding and improving outcomes in the care of patients with HFimpEF.
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Affiliation(s)
- Anthony V Pensa
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America
| | - Sadiya S Khan
- Department of Medicine, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America
| | - Ravi V Shah
- Department of Medicine, Division of Cardiology, Vanderbilt University School of Medicine, Nashville, TN, United States of America
| | - Jane E Wilcox
- Department of Medicine, Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL, United States of America.
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Yang CD, Chen JW, Quan JW, Shu XY, Feng S, Aihemaiti M, Ding FH, Shen WF, Lu L, Zhang RY, Wang XQ. Long-term glycemic variability predicts compromised development of heart failure with improved ejection fraction: a cohort study. Front Endocrinol (Lausanne) 2023; 14:1211954. [PMID: 37800137 PMCID: PMC10547879 DOI: 10.3389/fendo.2023.1211954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 08/31/2023] [Indexed: 10/07/2023] Open
Abstract
Background A substantial portion of heart failure (HF) patients adherent to guideline-directed medical therapies have experienced improved ejection fraction (EF), termed HFimpEF. Glycemic variability (GV) has emerged as a critical cardiometabolic factor. However, the relation between long-term GV and the incidence of HFimpEF is still unclear. Methods A total of 591 hospitalized HF patients with reduced EF (HFrEF, EF≤ 40%) admitted from January 2013 to December 2020 were consecutively enrolled. Repeat echocardiograms were performed at baseline and after around 12 months. The incidence of HFimpEF, defined as (1) an absolute EF improvement ≥10% and (2) a second EF > 40% and its association with long-term fasting plasma glucose (FPG) variability were analyzed. Results During a mean follow-up of 12.2 ± 0.6 months, 218 (42.0%) patients developed HFimpEF. Multivariate analysis showed FPG variability was independently associated with the incidence of HFimpEF after adjustment for baseline HbA1c, mean FPG during follow-up and other traditional risk factors (odds ratio [OR] for highest vs. lowest quartile of CV of FPG: 0.487 [95% CI 0.257~0.910]). Evaluation of GV by alternative measures yielded similar results. Subgroup analysis revealed that long-term GV was associated with HFimpEF irrespective of glycemic levels and diabetic conditions. Conclusions This study reveals that greater FPG variability is associated with compromised development of HFimpEF. A more stable control of glycemic levels might provide favorable effects on myocardial functional recovery in HF patients even without diabetes.
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Affiliation(s)
- Chen Die Yang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Jia Wei Chen
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Jin Wei Quan
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Xin Yi Shu
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Shuo Feng
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Muladili Aihemaiti
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Feng Hua Ding
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Wei Feng Shen
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Lin Lu
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Rui Yan Zhang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
| | - Xiao Qun Wang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, China
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Chrysakis N, Xanthopoulos A, Magouliotis D, Starling RC, Drakos SG, Triposkiadis F, Skoularigis J. Myocardial Recovery. Diagnostics (Basel) 2023; 13:diagnostics13081504. [PMID: 37189604 DOI: 10.3390/diagnostics13081504] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/11/2023] [Accepted: 04/17/2023] [Indexed: 05/17/2023] Open
Abstract
In this paper, the feasibility of myocardial recovery is analyzed through a literature review. First, the phenomena of remodeling and reverse remodeling are analyzed, approached through the physics of elastic bodies, and the terms myocardial depression and myocardial recovery are defined. Continuing, potential biochemical, molecular, and imaging markers of myocardial recovery are reviewed. Then, the work focuses on therapeutic techniques that can facilitate the reverse remodeling of the myocardium. Left ventricular assist device (LVAD) systems are one of the main ways to promote cardiac recovery. The changes that take place in cardiac hypertrophy, extracellular matrix, cell populations and their structural elements, β-receptors, energetics, and several biological processes, are reviewed. The attempt to wean the patients who experienced cardiac recovery from cardiac assist device systems is also discussed. The characteristics of the patients who will benefit from LVAD are presented and the heterogeneity of the studies performed in terms of patient populations included, diagnostic tests performed, and their results are addressed. The experience with cardiac resynchronization therapy (CRT) as another way to promote reverse remodeling is also reviewed. Myocardial recovery is a phenomenon that presents with a continuous spectrum of phenotypes. There is a need for algorithms to screen suitable patients who may benefit and identify specific ways to enhance this phenomenon in order to help combat the heart failure epidemic.
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Affiliation(s)
- Nikolaos Chrysakis
- Department of Cardiology, University Hospital of Larissa, 41110 Larissa, Greece
| | - Andrew Xanthopoulos
- Department of Cardiology, University Hospital of Larissa, 41110 Larissa, Greece
| | - Dimitrios Magouliotis
- Unit of Quality Improvement, Department of Cardiothoracic Surgery, University of Thessaly, Biopolis, 41110 Larissa, Greece
| | - Randall C Starling
- Department of Cardiovascular Medicine, Heart, Vascular, and Thoracic Institute, Cleveland Clinic, Cleveland, OH 44195, USA
| | - Stavros G Drakos
- Division of Cardiovascular Medicine, Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah Health, Salt Lake City, UT 84132, USA
| | - Filippos Triposkiadis
- Department of Cardiology, University Hospital of Larissa, 41110 Larissa, Greece
- School of Medicine, European University Cyprus, Nicosia 2404, Cyprus
| | - John Skoularigis
- Department of Cardiology, University Hospital of Larissa, 41110 Larissa, Greece
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Yang CD, Aihemaiti M, Quan JW, Chen JW, Shu XY, Ding FH, Shen WF, Lu L, Zhang RY, Pan WQ, Wang XQ. HbA1c level is associated with the development of heart failure with recovered ejection fraction in hospitalized heart failure patients with type 2 diabetes. Int J Cardiol 2023; 371:259-265. [PMID: 36116615 DOI: 10.1016/j.ijcard.2022.09.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 08/26/2022] [Accepted: 09/12/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Due to advances in medical treatments, a substantial proportion of heart failure (HF) patients with reduced left ventricular ejection fraction (EF, HFrEF) have experienced partial or complete recovery of EF, termed HFrecEF, and markedly improved clinical outcomes. In the present study, we sought to investigate the relationship between glycemic control and the incidence of HFrecEF in hospitalized HFrEF patients with type 2 diabetes mellitus (T2DM). METHODS A total of 463 hospitalized T2DM patients with HFrEF were consecutively enrolled. Follow-up echocardiogram was performed after around 12 months. Patients who had an absolute EF improvement ≥10% and a second EF > 40% were classified into HFrecEF, and those who did not meet these criteria were defined as persistent HFrEF. RESULTS During the 12-month follow-up, 44.5% of T2DM patients developed HFrecEF. Patients with HFrecEF had significantly lower HbA1c level than those with persistent HFrEF (6.5% [IQR 5.8% ∼ 7.2%] vs. 6.7% [IQR 6.1% ∼ 7.8%], P = 0.003), especially in HF of an ischemic etiology. HbA1c levels were inversely correlated with changes in EF during follow-up. After multivariate adjustment, every 1% increase in HbA1c conferred a 17.4% (OR: 0.826 [95% CI 0.701-0.968]) lower likelihood of HFrecEF. Compared to patients with good glycemic control (HbA1c ≤ 6.2%), those with poor glycemic control (HbA1c > 7.1%) had a 52.0% (OR: 0.480 [95% CI 0.281-0.811] decreased likelihood of HFrecEF. CONCLUSIONS This study demonstrates that uncontrolled HbA1c level is associated with compromised development of HFrecEF in T2DM patients with HF, especially in those with an ischemic etiology.
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Affiliation(s)
- Chen Die Yang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Muladili Aihemaiti
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Jin Wei Quan
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Jia Wei Chen
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Xin Yi Shu
- Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Feng Hua Ding
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Wei Feng Shen
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China; Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Lin Lu
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China; Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Rui Yan Zhang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China
| | - Wen Qi Pan
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China.
| | - Xiao Qun Wang
- Department of Cardiovascular Medicine, Ruijin Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China; Institute of Cardiovascular Disease, Shanghai Jiao-Tong University School of Medicine, Shanghai, PR China.
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Chen X, Wu M. Heart failure with recovered ejection fraction: Current understanding and future prospects. Am J Med Sci 2023; 365:1-8. [PMID: 36084706 DOI: 10.1016/j.amjms.2022.07.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/18/2022] [Accepted: 07/12/2022] [Indexed: 01/04/2023]
Abstract
Heart failure with reduced ejection fraction (HFrEF) is a prevalent kind of heart failure in which a significant amount of the ejection fraction can be repaired, and left ventricular remodeling and dysfunction can be reversed or even restored completely. However, a considerable number of patients still present clinical signs and biochemical features of incomplete recovery from the pathophysiology of heart failure and are at risk for adverse outcomes such as re-deterioration of systolic function and recurrence of HFrEF. Furthermore, it is revealed from a microscopic perspective that even if partial or complete reverse remodeling occurs, the morphological changes of cardiomyocytes, extracellular matrix deposition, and abnormal transcription and expression of pathological genes still exist. Patients with "recovered ejection fraction" have milder clinical symptoms and better outcomes than those with continued reduction of ejection fraction. Based on the unique characteristics of this subgroup and the existence of many unknowns, the academic community defines it as a new category-heart failure with recovered ejection fraction (HFrecEF). Because there is a shortage of natural history data for this population as well as high-quality clinical and basic research data, it is difficult to accurately evaluate clinical risk and manage this population. This review will present the current understanding of HFrecEF from the limited literature.
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Affiliation(s)
- Xi Chen
- Department of Cardiology, Affiliated Hospital of Putian University, Fujian, China
| | - Meifang Wu
- Department of Cardiology, Affiliated Hospital of Putian University, Fujian, China.
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Yang CD, Pan WQ, Feng S, Quan JW, Chen JW, Shu XY, Aihemaiti M, Ding FH, Shen WF, Lu L, Zhang RY, Wang XQ. Insulin Resistance Is Associated With Heart Failure With Recovered Ejection Fraction in Patients Without Diabetes. J Am Heart Assoc 2022; 11:e026184. [PMID: 36129062 DOI: 10.1161/jaha.122.026184] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Because of advances in medical treatments, a substantial proportion of patients with heart failure (HF) have experienced recovery of ejection fraction (EF), termed HF with recovered EF (HFrecEF). Insulin resistance (IR) is prevalent in HF and tightly related with prognosis. This study investigates the relationship between IR and the incidence of HFrecEF in patients who are nondiabetic. Methods and Results A total of 262 patients with HF with reduced EF (HFrEF) who were nondiabetic were consecutively enrolled. Patients were classified into HFrecEF (follow-up EF>40% and ≥10% absolute increase) or otherwise persistent HFrEF based on repeat echocardiograms after 12 months. IR was estimated by an updated homeostasis model assessment for IR (HOMA2-IR). The median HOMA2-IR level was 1.05 (interquartile range [IQR], 0.67-1.63) in our cohort of patients with HF who were nondiabetic. During follow-up, 121 (odds ratio [OR], 46.2% [95% CI 40.2-52.2]) patients developed HFrecEF. Compared with patients with HFrEF, patients with HFrecEF had significantly lower HOMA2-IR levels (0.92 [IQR, 0.61-1.37] versus 1.14 [IQR, 0.75-1.78], P=0.007), especially in nonischemic HF. Log2-transformed HOMA2-IR was inversely correlated to improvements in EF (Pearson's r=-0.25, P<0.001). After multivariable adjustment, a doubling of HOMA2-IR was associated with a 42.8% decreased likelihood of HFrecEF (OR, 0.572 [95% CI, 0.385-0.827]). Conclusions This study reveals that IR is independently associated with compromised development of HFrecEF in patients who are nondiabetic.
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Affiliation(s)
- Chen Die Yang
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Wen Qi Pan
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Shuo Feng
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Jin Wei Quan
- Institute of Cardiovascular Disease Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Jia Wei Chen
- Institute of Cardiovascular Disease Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Xin Yi Shu
- Institute of Cardiovascular Disease Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Muladili Aihemaiti
- Institute of Cardiovascular Disease Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Feng Hua Ding
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Wei Feng Shen
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China.,Institute of Cardiovascular Disease Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Lin Lu
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China.,Institute of Cardiovascular Disease Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Rui Yan Zhang
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
| | - Xiao Qun Wang
- Department of Cardiovascular Medicine, Ruijin Hospital Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China.,Institute of Cardiovascular Disease Shanghai Jiao-Tong University School of Medicine Shanghai P. R. China
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Alnuwaysir RIS, Hoes MF, van Veldhuisen DJ, van der Meer P, Beverborg NG. Iron Deficiency in Heart Failure: Mechanisms and Pathophysiology. J Clin Med 2021; 11:125. [PMID: 35011874 PMCID: PMC8745653 DOI: 10.3390/jcm11010125] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Revised: 12/17/2021] [Accepted: 12/22/2021] [Indexed: 12/15/2022] Open
Abstract
Iron is an essential micronutrient for a myriad of physiological processes in the body beyond erythropoiesis. Iron deficiency (ID) is a common comorbidity in patients with heart failure (HF), with a prevalence reaching up to 59% even in non-anaemic patients. ID impairs exercise capacity, reduces the quality of life, increases hospitalisation rate and mortality risk regardless of anaemia. Intravenously correcting ID has emerged as a promising treatment in HF as it has been shown to alleviate symptoms, improve quality of life and exercise capacity and reduce hospitalisations. However, the pathophysiology of ID in HF remains poorly characterised. Recognition of ID in HF triggered more research with the aim to explain how correcting ID improves HF status as well as the underlying causes of ID in the first place. In the past few years, significant progress has been made in understanding iron homeostasis by characterising the role of the iron-regulating hormone hepcidin, the effects of ID on skeletal and cardiac myocytes, kidneys and the immune system. In this review, we summarise the current knowledge and recent advances in the pathophysiology of ID in heart failure, the deleterious systemic and cellular consequences of ID.
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Affiliation(s)
| | | | | | | | - Niels Grote Beverborg
- Department of Cardiology, University Medical Center Groningen, University of Groningen, P.O. Box 30.001, 9700 RB Groningen, The Netherlands; (R.I.S.A.); (M.F.H.); (D.J.v.V.); (P.v.d.M.)
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He Y, Ling Y, Guo W, Li Q, Yu S, Huang H, Zhang R, Gong Z, Liu J, Mo L, Yi S, Lai D, Yao Y, Liu J, Chen J, Liu Y, Chen S. Prevalence and Prognosis of HFimpEF Developed From Patients With Heart Failure With Reduced Ejection Fraction: Systematic Review and Meta-Analysis. Front Cardiovasc Med 2021; 8:757596. [PMID: 34901217 PMCID: PMC8655693 DOI: 10.3389/fcvm.2021.757596] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 10/15/2021] [Indexed: 11/21/2022] Open
Abstract
Background: Heart failure with improved ejection fraction (HFimpEF) is classified as a new type of heart failure, and its prevalence and prognosis are not consistent in previous studies. There is no systematic review and meta-analysis regarding the prevalence and prognosis of the HFimpEF. Method: A systematic search was performed in MEDLINE, EMBASE, and Cochrane Library from inception to May 22, 2021 (PROSPERO registration: CRD42021260422). Studies were included for analysis if the prognosis of mortality or hospitalization were reported in HFimpEF or in patients with heart failure with recovered ejection fraction (HFrecEF). The primary outcome was all-cause mortality. Cardiac hospitalization, all-cause hospitalization, and composite events of mortality and hospitalization were considered as secondary outcomes. Result: Nine studies consisting of 9,491 heart failure patients were eventually included. During an average follow-up of 3.8 years, the pooled prevalence of HFimpEF was 22.64%. HFimpEF had a lower risk of mortality compared with heart failure patients with reduced ejection fraction (HFrEF) (adjusted HR: 0.44, 95% CI: 0.33–0.60). HFimpEF was also associated with a lower risk of cardiac hospitalization (HR: 0.40, 95% CI: 0.20–0.82) and the composite endpoint of mortality and hospitalization (HR: 0.56, 95% CI: 0.44–0.73). Compared with patients with preserved ejection fraction (HFpEF), HFimpEF was associated with a moderately lower risk of mortality (HR: 0.42, 95% CI: 0.32–0.55) and hospitalization (HR: 0.73, 95% CI: 0.58–0.92). Conclusion: Around 22.64% of patients with HFrEF would be treated to become HFimpEF, who would then obtain a 56% decrease in mortality risk. Meanwhile, HFimpEF is associated with lower heart failure hospitalization. Further studies are required to explore how to promote left ventricular ejection fraction improvement and improve the prognosis of persistent HFrEF in patients. Systematic Review Registration:https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021260422, identifier: CRD42021260422.
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Affiliation(s)
- Yibo He
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yihang Ling
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Wei Guo
- Guangdong Provincial Geriatrics Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Qiang Li
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Sijia Yu
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Haozhang Huang
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Rongting Zhang
- Department of Cardiology, Longyan First Affiliated Hospital of Fujian Medical University, Longyan, China
| | - Zhiwen Gong
- Department of Cardiology, First People's Hospital of Kashgar Prefecture, Kashgar, China.,Department of Cardiology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Jiaxuan Liu
- Department of Cardiology, First People's Hospital of Kashgar Prefecture, Kashgar, China.,Department of Cardiology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Liyi Mo
- Department of Cardiology, First People's Hospital of Kashgar Prefecture, Kashgar, China.,Department of Cardiology, The Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, China
| | - Shixin Yi
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Disheng Lai
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Younan Yao
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jin Liu
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Jiyan Chen
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Yong Liu
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
| | - Shiqun Chen
- Department of Cardiology, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
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11
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van den Berge JC, Vroegindewey MM, Veenis JF, Brugts JJ, Caliskan K, Manintveld OC, Akkerhuis KM, Boersma E, Deckers JW, Constantinescu AA. Left ventricular remodelling and prognosis after discharge in new-onset acute heart failure with reduced ejection fraction. ESC Heart Fail 2021; 8:2679-2689. [PMID: 33934556 PMCID: PMC8318456 DOI: 10.1002/ehf2.13299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 02/23/2021] [Accepted: 02/28/2021] [Indexed: 12/28/2022] Open
Abstract
Aims This study aimed to investigate the left ventricular (LV) remodelling and long‐term prognosis of patients with new‐onset acute heart failure (HF) with reduced ejection fraction who were pharmacologically managed and survived until hospital discharge. We compared patients with ischaemic and non‐ischaemic aetiology. Methods and results This cohort study consisted of 111 patients admitted with new‐onset acute HF in the period 2008–2016 [62% non‐ischaemic aetiology, 48% supported by inotropes, vasopressors, or short‐term mechanical circulatory devices, and left ventricular ejection fraction (LVEF) at discharge 28% (interquartile range 22–34)]. LV dimensions, LVEF, and mitral valve regurgitation were used as markers for LV remodelling during up to 3 years of follow‐up. Both patients with non‐ischaemic and ischaemic HF had significant improvement in LVEF (P < 0.001 and P = 0.004, respectively) with significant higher improvement in those with non‐ischaemic HF (17% vs. 6%, P < 0.001). Patients with non‐ischaemic HF had reduction in LV end‐diastolic and end‐systolic diameters (6 and 10 mm, both P < 0.001), but this was not found in those with ischaemic HF [+3 mm (P = 0.09) and +2 mm (P = 0.07), respectively]. During a median follow‐up of 4.6 years, 98 patients (88%) did not reach the composite endpoint of LV assist device implantation, heart transplantation, or all‐cause mortality, with no difference between with ischaemic and non‐ischaemic HF [hazard ratio 0.69 (95% confidence interval 0.19–2.45)]. Conclusions Patients with new‐onset acute HF with reduced ejection fraction discharged on optimal medical treatment have a good prognosis. We observed a considerable LV remodelling with improvement in LV function and dimensions, starting already at 6 months in patients with non‐ischaemic HF but not in their ischaemic counterparts.
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Affiliation(s)
- Jan C van den Berge
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Maxime M Vroegindewey
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Jesse F Veenis
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Jasper J Brugts
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Kadir Caliskan
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Olivier C Manintveld
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - K Martijn Akkerhuis
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Eric Boersma
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Jaap W Deckers
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
| | - Alina A Constantinescu
- Department of Cardiology, Erasmus MC, University Medical Center Rotterdam, Dr. Molewaterplein 40, Room Rg4, PO Box 2040, Rotterdam, 3015 GD, The Netherlands
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12
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Hiraiwa H, Okumura T, Shimizu S, Arao Y, Oishi H, Kato H, Kuwayama T, Yamaguchi S, Haga T, Yokoi T, Kondo T, Sugiura Y, Kano N, Watanabe N, Fukaya K, Furusawa K, Sawamura A, Morimoto R, Fujimoto K, Mutsuga M, Usui A, Murohara T. Pathological changes of the myocardium in reworsening of anthracycline-induced cardiomyopathy after explant of a left ventricular assist device. NAGOYA JOURNAL OF MEDICAL SCIENCE 2021; 82:129-134. [PMID: 32273641 PMCID: PMC7103868 DOI: 10.18999/nagjms.82.1.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We herein report the long-term changes in cardiac function and pathological findings after successful explantation of a left ventricular assist device in a 42-year-old patient with anthracycline-induced cardiomyopathy with reworsening heart failure. Endomyocardial biopsy samples revealed that the cardiomyocyte diameter decreased and collagen volume fraction increased just after left ventricular assist device explantation. The collagen volume fraction decreased after 6 months, despite preserved systolic function. At 5 years after left ventricular assist device explantation, the systolic function markedly decreased and cardiomyocyte diameter increased. Pathological changes of the myocardium may enable the identification of cardiac dysfunction prior to echocardiographic changes in patients with reworsening heart failure after left ventricular assist device explantation.
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Affiliation(s)
- Hiroaki Hiraiwa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Takahiro Okumura
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shinya Shimizu
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Cardiology, Japanese Red Cross Nagoya Daiichi Hospital, Nagoya, Japan
| | - Yoshihito Arao
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hideo Oishi
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroo Kato
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tasuku Kuwayama
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shogo Yamaguchi
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomoaki Haga
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tsuyoshi Yokoi
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toru Kondo
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yuki Sugiura
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoaki Kano
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoki Watanabe
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kenji Fukaya
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kenji Furusawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akinori Sawamura
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ryota Morimoto
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kazuro Fujimoto
- Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masato Mutsuga
- Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akihiko Usui
- Department of Cardiac Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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13
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Vallakati A, Hasan AK, Boudoulas KD. Transcatheter Mitral Valve Repair in Patients with Heart Failure: A Meta-Analysis. Cardiology 2020; 146:42-48. [PMID: 33260194 DOI: 10.1159/000511412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 08/29/2020] [Indexed: 11/19/2022]
Abstract
BACKGROUND Severe secondary mitral regurgitation (MR) is associated with poor prognosis in heart failure patients with left ventricular systolic dysfunction. Few observational and randomized controlled studies demonstrated the efficacy of transcatheter mitral valve repair in heart failure patients with significant MR. A meta-analysis of published studies was performed to evaluate the role of transcatheter mitral valve repair using the MitraClip device in heart failure patients with significant secondary MR. METHODS A literature search was performed using PubMed, Cochran CENTRAL, and Embase databases using the search terms "percutaneous mitral valve repair" or "transcatheter mitral valve repair" and "heart failure." Studies that compared medical therapy plus transcatheter mitral valve repair using MitraClip to medical therapy alone in heart failure patients with significant secondary MR were included for pooled analysis. A random-effects model with the Mantel-Haenszel method was used to analyze the data. RESULTS Four studies, 2 randomized controlled and 2 nonrandomized studies met the criteria for analysis. Pooled analysis included a total of 1,421 patients, of which 746 patients underwent transcatheter mitral valve repair and 675 patients received medical therapy alone. When compared to medical therapy, transcatheter mitral valve repair significantly decreased all-cause mortality (OR 0.58, 95% CI 0.37-0.91; p = 0.02). A trend toward significant reduction in rehospitalizations (OR 0.35, 95% CI 0.12-1.00; p = 0.05) was also observed. Periprocedural complications ranged from 7.5 to 12.6%. CONCLUSION Evidence from pooled analysis suggests that transcatheter mitral valve repair using MitraClip on top of medical therapy, in appropriately selected symptomatic heart failure patients with significant secondary MR, provides survival benefit and may decrease hospitalizations when compared with guideline-directed medical therapy alone.
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Affiliation(s)
- Ajay Vallakati
- Division of Cardiovascular Diseases, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA,
| | - Ayesha K Hasan
- Division of Cardiovascular Diseases, The Ohio State University Wexner Medical Center, Columbus, Ohio, USA
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14
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Wu KC, Wongvibulsin S, Tao S, Ashikaga H, Stillabower M, Dickfeld TM, Marine JE, Weiss RG, Tomaselli GF, Zeger SL. Baseline and Dynamic Risk Predictors of Appropriate Implantable Cardioverter Defibrillator Therapy. J Am Heart Assoc 2020; 9:e017002. [PMID: 33023350 PMCID: PMC7763383 DOI: 10.1161/jaha.120.017002] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Background Current approaches fail to separate patients at high versus low risk for ventricular arrhythmias owing to overreliance on a snapshot left ventricular ejection fraction measure. We used statistical machine learning to identify important cardiac imaging and time-varying risk predictors. Methods and Results Three hundred eighty-two cardiomyopathy patients (left ventricular ejection fraction ≤35%) underwent cardiac magnetic resonance before primary prevention implantable cardioverter defibrillator insertion. The primary end point was appropriate implantable cardioverter defibrillator discharge or sudden death. Patient characteristics; serum biomarkers of inflammation, neurohormonal status, and injury; and cardiac magnetic resonance-measured left ventricle and left atrial indices and myocardial scar burden were assessed at baseline. Time-varying covariates comprised interval heart failure hospitalizations and left ventricular ejection fractions. A random forest statistical method for survival, longitudinal, and multivariable outcomes incorporating baseline and time-varying variables was compared with (1) Seattle Heart Failure model scores and (2) random forest survival and Cox regression models incorporating baseline characteristics with and without imaging variables. Age averaged 57±13 years with 28% women, 66% white, 51% ischemic, and follow-up time of 5.9±2.3 years. The primary end point (n=75) occurred at 3.3±2.4 years. Random forest statistical method for survival, longitudinal, and multivariable outcomes with baseline and time-varying predictors had the highest area under the receiver operating curve, median 0.88 (95% CI, 0.75-0.96). Top predictors comprised heart failure hospitalization, left ventricle scar, left ventricle and left atrial volumes, left atrial function, and interleukin-6 level; heart failure accounted for 67% of the variation explained by the prediction, imaging 27%, and interleukin-6 2%. Serial left ventricular ejection fraction was not a significant predictor. Conclusions Hospitalization for heart failure and baseline cardiac metrics substantially improve ventricular arrhythmic risk prediction.
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Affiliation(s)
- Katherine C Wu
- Department of Medicine Division of Cardiology Johns Hopkins University School of Medicine Baltimore MD
| | - Shannon Wongvibulsin
- Department of Biomedical Engineering and School of Medicine Johns Hopkins University Baltimore MD
| | - Susumu Tao
- Department of Medicine Division of Cardiology Johns Hopkins University School of Medicine Baltimore MD
| | - Hiroshi Ashikaga
- Department of Medicine Division of Cardiology Johns Hopkins University School of Medicine Baltimore MD.,Department of Biomedical Engineering and School of Medicine Johns Hopkins University Baltimore MD
| | | | - Timm M Dickfeld
- Department of Medicine University of Maryland Medical Systems Baltimore MD
| | - Joseph E Marine
- Department of Medicine Division of Cardiology Johns Hopkins University School of Medicine Baltimore MD
| | - Robert G Weiss
- Department of Medicine Division of Cardiology Johns Hopkins University School of Medicine Baltimore MD.,The Russell H. Morgan Department of Radiology and Radiological Science Johns Hopkins University School of Medicine Baltimore MD
| | | | - Scott L Zeger
- Department of Biostatistics Johns Hopkins Bloomberg School of Public Health Baltimore MD
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15
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Smeets M, Vaes B, Aertgeerts B, Raat W, Penders J, Vercammen J, Droogne W, Mullens W, Janssens S. Impact of an extended audit on identifying heart failure patients in general practice: baseline results of the OSCAR-HF pilot study. ESC Heart Fail 2020; 7:3950-3961. [PMID: 32969599 PMCID: PMC7754725 DOI: 10.1002/ehf2.12990] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 08/20/2020] [Accepted: 08/24/2020] [Indexed: 12/28/2022] Open
Abstract
Aims Identifying heart failure (HF) patients in general practice is challenging, and little is known about the current quality of care. We implemented an extended audit from the electronic health records (EHRs) of general practitioners (GPs) to identify HF patients and investigate patient characteristics and quality of care. Methods and results This study describes the baseline results of the OSCAR‐HF pilot study in eight general practices (51 GPs) in Flanders, Belgium. This prospective trial ran for 6 months. Interventions included an extended audit, an N‐terminal pro‐B‐type natriuretic peptide point‐of‐care test, and assistance of a specialist HF nurse. The extended audit searched on risk factors for HF, HF symptoms, signs, and medication in the GPs' EHR to generate a list of possible HF patients. GPs determined which patients had HF. Those HF patients constituted the OSCAR‐HF study population. Each patient file was manually revised to extract biomarker measurements, echocardiography data, and quality indicators. An independent panel of experts assessed the validity of GPs' HF diagnoses. Feedback about the validity of the HF diagnosis was given to the GP. Out of 18 011 patients ≥ 40 years, we identified 310 patients with a registered HF diagnosis before the study start (HF prevalence: 1.7%). The extended audit led to a 74% increase in identified HF patients (n = 538, HF prevalence: 3.0%) with a mean age of 79 ± 11 years. The prevalence of HF with reduced ejection fraction (HFrEF) was 20% (n = 110). A high proportion of patients underwent echocardiography in the past 5 years (86%, n = 462). Natriuretic peptides were rarely available in patients' files (19%, n = 100). Medical specialists should improve communication about the HF diagnosis because a specialist diagnosis was present in only 225 patients (42%) while 67% (n = 359) of the HF diagnoses were judged objectified by a panel of experts. Assigning a diagnosis of HF was particularly difficult in HF patients with preserved EF (HFpEF). HFrEF treatment rates with renin–angiotensin–aldosterone system blockers (84%, n = 92) and beta‐blockers (86%, n = 94) were very good; however, target doses were hardly reached (34% and 14%, respectively). Conclusions This study highlighted the need to improve case finding for HF in general practice and showed that an extended audit in the GPs' EHR was a successful strategy to do so. To improve the quality of HF care in general practice, specific strategies are needed to diagnose HFpEF and to reach target doses of disease‐modifying drugs in HFrEF patients.
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Affiliation(s)
- Miek Smeets
- Department of Public Health and Primary Care, KU Leuven (KUL), Leuven, Belgium
| | - Bert Vaes
- Department of Public Health and Primary Care, KU Leuven (KUL), Leuven, Belgium.,Institute of Health and Society, Université Catholique de Louvain (UCL), Brussels, Belgium
| | - Bert Aertgeerts
- Department of Public Health and Primary Care, KU Leuven (KUL), Leuven, Belgium
| | - Willem Raat
- Department of Public Health and Primary Care, KU Leuven (KUL), Leuven, Belgium
| | - Joris Penders
- Department of Clinical Biology, Ziekenhuis Oost-Limburg (ZOL), Genk, Belgium.,Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Jan Vercammen
- Department of Cardiology, Ziekenhuis Oost-Limburg (ZOL), Genk, Belgium
| | - Walter Droogne
- Department of Cardiovascular Diseases, Universitair Ziekenhuis Gasthuisberg, KU Leuven (KUL), Leuven, Belgium
| | - Wilfried Mullens
- Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium.,Department of Cardiology, Ziekenhuis Oost-Limburg (ZOL), Genk, Belgium
| | - Stefan Janssens
- Department of Cardiovascular Diseases, Universitair Ziekenhuis Gasthuisberg, KU Leuven (KUL), Leuven, Belgium
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16
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Long-Term Effects of Angiotensin Receptor-Neprilysin Inhibitors on Myocardial Function in Chronic Heart Failure Patients with Reduced Ejection Fraction. Diagnostics (Basel) 2020; 10:diagnostics10080522. [PMID: 32731353 PMCID: PMC7459629 DOI: 10.3390/diagnostics10080522] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/08/2020] [Accepted: 07/27/2020] [Indexed: 12/11/2022] Open
Abstract
Background. We sought to evaluate the long-term effects of angiotensin receptor blocker–neprilysin inhibitor (ARNI) therapy on reverse remodeling of the failing myocardium in HFrEF patients. Methods. We performed a prospective non-randomized longitudinal study on 228 HFrEF patients treated with ARNI at our center. Prior to ARNI introduction all patients received stable doses of ACEI/ARB for at least six months. Clinical, biochemical and echocardiography data were obtained at ARNI introduction and 12-month follow-up. Results At follow-up, we found significant improvements in LVEF (29.7% ± 8% vs. 36.5% ± 9%; p < 0.001), LVOT-VTI (14.8 ± 4.2 cm vs. 17.2 ± 4.2 cm; p < 0.001), TAPSE (1.7 ± 0.5 cm vs. 2.1 ± 0.6 cm; p < 0.001) and LV-EDD (6.5 ± 0.8 cm vs. 6.3 ± 0.9 cm; p = 0.001). NT-proBNP serum levels also decreased significantly (1324 (605, 3281) pg/mL vs. 792 (329, 2022) pg/mL; p = 0.001). A total of 102 (45%) of patients responded favorably to ARNI (ΔLVEF < +5%; Group A) and 126 (55%) patients achieved ΔLVEF ≥ +5% (Group B). The two groups differed significantly in age, heart failure etiology, baseline LVEF and baseline NT-proBNP. On multivariable analysis, nonischemic heart failure, LVEF < 30% and NT-proBNP < 1500 pg/mL emerged as independent correlates of favorable response to ARNI therapy. Conclusion. ARNI therapy appears to improve echocardiographic parameters of left and right ventricular function in HFrEF patients above the effect of pre-existing optimal medical management. These effects may be particularly pronounced in patients with nonischemic heart failure, LVEF < 30% and lower degree of neurohumoral activation.
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17
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Boudoulas KD, Vallakati A, Pitsis AA, Orsinelli DA, Abraham WT. The Use of MitraClip in Secondary Mitral Regurgitation and Heart Failure. CARDIOVASCULAR REVASCULARIZATION MEDICINE 2020; 21:1606-1612. [PMID: 32461047 DOI: 10.1016/j.carrev.2020.05.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 05/02/2020] [Accepted: 05/13/2020] [Indexed: 10/24/2022]
Abstract
Secondary (also known as functional) mitral regurgitation (MR) has increased substantially over the last several decades due to an increase in the prevalence of dilated cardiomyopathy (ischemic and non-ischemic). Mortality and morbidity in patients with dilated cardiomyopathy is much greater when associated with MR as compared to without MR. MR will result in further left ventricular (LV) volume overload, LV dilation, and pupillary muscle displacement resulting in deterioration of the severity of MR leading to a vicious cycle. Optimization of heart failure medical therapy, and cardiac resynchronization therapy for those that qualify, can improve severity of MR; however, significant MR will persist in certain patients. Transcatheter mitral valve repair to treat significant MR using the MitraClip (Abbott, Menlo Park, California), which grasps and coapts the posterior and anterior mitral valve leaflets, in appropriately selected patients with dilated cardiomyopathy and secondary MR has been shown to improve quality of life and prolong survival.
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Affiliation(s)
| | - Ajay Vallakati
- Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, USA
| | - Antonios A Pitsis
- Department of Cardiothoracic Surgery, St. Luke's Hospital, Thessaloniki, Greece
| | - David A Orsinelli
- Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, USA
| | - William T Abraham
- Division of Cardiovascular Medicine, The Ohio State University, Columbus, OH, USA
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18
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Withdrawal of Neurohumoral Blockade After Cardiac Resynchronization Therapy. J Am Coll Cardiol 2020; 75:1426-1438. [DOI: 10.1016/j.jacc.2020.01.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/24/2020] [Accepted: 01/27/2020] [Indexed: 01/14/2023]
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19
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Affiliation(s)
- Wilfried Mullens
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium (W.M., P.M.).,Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium (W.M.)
| | - Pieter Martens
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium (W.M., P.M.).,Doctoral School for Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium (P.M.)
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Martens P, Dupont M, Dauw J, Somers F, Herbots L, Timmermans P, Verwerft J, Mullens W. Rationale and design of the IRON-CRT trial: effect of intravenous ferric carboxymaltose on reverse remodelling following cardiac resynchronization therapy. ESC Heart Fail 2019; 6:1208-1215. [PMID: 31562751 PMCID: PMC6989286 DOI: 10.1002/ehf2.12503] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Revised: 06/14/2019] [Accepted: 07/01/2019] [Indexed: 12/28/2022] Open
Abstract
AIMS Iron deficiency is common in heart failure with reduced ejection fraction (HFrEF). In patients with cardiac resynchronization therapy (CRT), it is associated with a diminished reverse remodelling response and poor functional improvement. The latter is partially related to a loss in contractile force at higher heart rates (negative force-frequency relationship). METHODS AND RESULTS The effect of intravenous ferric carboxymaltose on reverse remodelling following cardiac resynchronization therapy (IRON-CRT) trial is a multicentre, prospective, randomized, double-blind controlled trial in HFrEF patients who experienced incomplete reverse remodelling (defined as a left ventricular ejection fraction below <45%) at least 6 months after CRT. Additionally, patients need to have iron deficiency defined as a ferritin below 100 μg/L irrespective of transferrin saturation or a ferritin between 100 and 300 μg/L with a transferrin saturation <20%. Patients will be randomized to either intravenous ferric carboxymaltose (dose based according to Summary of Product Characteristics) or intravenous placebo. The primary objective is to evaluate the effect of ferric carboxymaltose on metrics of cardiac reverse remodelling and contractility, measured by the primary endpoint, change in left ventricular ejection fraction assessed by three-dimensional (3D) echo from baseline to 3 month follow-up and the secondary endpoints change in left ventricular end-systolic and end-diastolic volume. The secondary objective is to determine if ferric carboxymaltose is capable of improving cardiac contractility in vivo, by assessing the force-frequency relationship through incremental biventricular pacing. A total of 100 patients will be randomized in a 1:1 fashion. CONCLUSIONS The IRON-CRT trial will determine the effect of ferric carboxymaltose on cardiac reverse remodelling and rate-dependent cardiac contractility in HFrEF patients.
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Affiliation(s)
- Pieter Martens
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.,Doctoral School for Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Matthias Dupont
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Jeroen Dauw
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Frauke Somers
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Lieven Herbots
- Department of Cardiology, Jessa Ziekenhuis, Hasselt, Belgium
| | | | - Jan Verwerft
- Department of Cardiology, Jessa Ziekenhuis, Hasselt, Belgium
| | - Wilfried Mullens
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.,Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
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Tucker WJ, Beaudry RI, Liang Y, Clark AM, Tomczak CR, Nelson MD, Ellingsen O, Haykowsky MJ. Meta-analysis of Exercise Training on Left Ventricular Ejection Fraction in Heart Failure with Reduced Ejection Fraction: A 10-year Update. Prog Cardiovasc Dis 2018; 62:163-171. [PMID: 30227187 PMCID: PMC6445773 DOI: 10.1016/j.pcad.2018.08.006] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2018] [Accepted: 08/19/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND The role of exercise training modality to attenuate left ventricular (LV) remodeling in heart failure patients with reduced ejection fraction (HFrEF) remains uncertain. The authors performed a systematic review and meta-analysis of published reports on exercise training (moderate-intensity continuous aerobic, high-intensity interval aerobic, and resistance exercise) and LV remodeling in clinically stable HFrEF patients. METHODS We searched MEDLINE, Cochrane Central Registry of Controlled Trials, CINAHL, and PubMed (2007 to 2017) for randomized controlled trials of exercise training on resting LV ejection fraction (EF) and end-diastolic and end-systolic volumes in HFrEF patients. RESULTS 18 trials reported LV ejection fraction (LVEF) data, while 8 and 7 trials reported LV end-diastolic and LV end-systolic volumes, respectively. Overall, moderate-intensity continuous training (MICT) significantly increased LVEF (weighted mean difference, WMD = 3.79%; 95% confidence interval, CI, 2.08 to 5.50%) with no change in LV volumes versus control. In trials ≥6 months duration, MICT significantly improved LVEF (WMD = 6.26%; 95% CI 4.39 to 8.13%) while shorter duration (<6 months) trials modestly increased LVEF (WMD = 2.33%; 95% CI 0.84 to 3.82%). High-intensity interval training (HIIT) significantly increased LVEF compared to control (WMD = 3.70%; 95% CI 1.63 to 5.77%) but was not different than MICT (WMD = 3.17%; 95% CI -0.87 to 7.22%). Resistance training performed alone or combined with aerobic training (MICT or HIIT) did not significantly change LVEF. CONCLUSIONS In clinically stable HFrEF patients, MICT is an effective therapy to attenuate LV remodeling with the greatest benefits occurring with long-term (≥6 months) training. HIIT performed for 2 to 3 months is superior to control, but not MICT, for improvement of LVEF.
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Affiliation(s)
- Wesley J Tucker
- College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, TX, USA
| | - Rhys I Beaudry
- College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, TX, USA
| | - Yuanyuan Liang
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - Alexander M Clark
- Faculty of Nursing, University of Alberta, Edmonton, Alberta, Canada
| | - Corey R Tomczak
- College of Kinesiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada
| | - Michael D Nelson
- College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, TX, USA
| | - Oyvind Ellingsen
- K. G. Jebsen Center of Exercise in Medicine, Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, Norway; Department of Cardiology, St. Olav's Hospital, Trondheim, Norway
| | - Mark J Haykowsky
- College of Nursing and Health Innovation, University of Texas at Arlington, Arlington, TX, USA.
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Martens P, Beliën H, Dupont M, Vandervoort P, Mullens W. The reverse remodeling response to sacubitril/valsartan therapy in heart failure with reduced ejection fraction. Cardiovasc Ther 2018; 36:e12435. [PMID: 29771478 DOI: 10.1111/1755-5922.12435] [Citation(s) in RCA: 115] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Revised: 05/04/2018] [Accepted: 05/09/2018] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Major classes of medical therapy for heart failure with reduced ejection fraction (HFrEF) induce reverse remodeling. The revere remodeling response to sacubitril/valsartan remains unstudied. METHODS We performed a single-center, prospective assessor-blinded study to determine the reverse remodeling response of sacubitril/valsartan therapy in HFrEF patients with a class I indication (New York heart Association [NYHA]-class II-IV, Left ventricular ejection fraction [LVEF] < 35%, optimal dose with Renin-Angiotensin-System-Blocker [RAS-blocker]). Doses of sacubitril/valsartan were optimized to individual tolerance. Echocardiographic images were assessed offline by 2 investigators blinded to both the clinical data and timing of echocardiograms. RESULTS One-hundred-twenty-five HFrEF patients (66 ± 10 years) were prospectively included. The amount of RAS-blocker before and after switch to sacubitril/valsartan was similar(P = .290), indicating individual optimal dosing of sacubitril/valsartan. Over a median(IQR) follow-up of 118(77-160) days after initiation of sacubitril/valsartan, LVEF improved (29.6 ± 6% vs 34.8 ± 6%; P < .001) and Left ventricular end-systolic (LVESV) and end-diastolic volume (LVEDV) decreased (LVESV; 147 ± 57 mL vs 129 ± 55 mL; P < .001 and LVEDV; 206 ± 71 mL vs197 ± 72 mL; P = .027). Volumetric remodeling was associated with a reduction in the degree of mitral regurgitation (1.59 ± 1.0 vs 1.11 ± 0.8; P < .001; [scale from 0-4]). Metrics of diastolic function improved; including a drop in the E/A-wave ratio (1.75 ± 1.13 vs 1.38 ± 0.88; P = .002) and diastolic filling time (% of cycle length) prolonged (48 ± 9% vs 52 ± 1%; P = .005). The percent of patients with a restrictive mitral filling pattern dropped from 47% to 23% (P = .004). A dose-dependent effect was noted for changes in LVEF (P < .001) and LVESV (P = .031), with higher doses of sacubitril/valsartan leading to more reverse remodeling. CONCLUSION Switching therapy in eligible HFrEF patients from a RAS-blocker to sacubitril/valsartan induces beneficial reverse remodeling of both metrics of systolic as diastolic function.
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Affiliation(s)
- Pieter Martens
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.,Doctoral School for Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Hanne Beliën
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Matthias Dupont
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Pieter Vandervoort
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.,Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
| | - Wilfried Mullens
- Department of Cardiology, Ziekenhuis Oost-Limburg, Genk, Belgium.,Biomedical Research Institute, Faculty of Medicine and Life Sciences, Hasselt University, Diepenbeek, Belgium
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