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Heart failure normal ejection fraction

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https://www.readbyqxmd.com/read/28324981/hemodynamic-determinants-and-ventriculo-arterial-coupling-are-sex-associated-in-heart-failure-patients
#1
Peter L Kerkhof, Guy R Heyndrickx, John K-J Li
End-systolic volume (ESV) and end-diastolic volume (EDV) are key parameters in the analysis of left ventricular (LV) function, and the study of cardiac remodeling. The volume regulation graph (VRG) relates these fundamental determinants, and permits convenient stratification for clinically relevant covariates. This contribution analyzes sex-associated differences in hemodynamic parameters for 197 heart failure (HF) patients, evaluated by biplane ventriculography, in combination with arterial pressure. We calculated LV parameters such as stroke volume (SV), cardiac output (CO), ESV, EDV, ejection fraction (EF), end-systolic elastance (Emax), besides arterial parameters: effective arterial elastance (Ea), elastance ratio (the coupling index k), peripheral resistance (Rs), pulse pressure (PP), and arterial compliance (C), all normalized for body surface area when appropriate...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28321682/recent-advances-and-clinical-applications-of-pet-cardiac-autonomic-nervous-system-imaging
#2
REVIEW
Nabil E Boutagy, Albert J Sinusas
PURPOSE OF REVIEW: The purpose of this review was to summarize current advances in positron emission tomography (PET) cardiac autonomic nervous system (ANS) imaging, with a specific focus on clinical applications of novel and established tracers. RECENT FINDINGS: [(11)C]-Meta-hydroxyephedrine (HED) has provided useful information in evaluation of normal and pathological cardiovascular function. Recently, [(11)C]-HED PET imaging was able to predict lethal arrhythmias, sudden cardiac death (SCD), and all-cause mortality in heart failure patients with reduced ejection fraction (HFrEF)...
April 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28321239/xinfuli-improves-cardiac-function-histopathological-changes-and-attenuate-cardiomyocyte-apoptosis-in-rats-with-doxorubicin-induced-cardiotoxicity
#3
Pei-Pei Lu, Jie Ma, Xiao-Peng Liang, Cai-Xia Guo, Yan-Kun Yang, Kun-Qi Yang, Qi-Ming Shen, Li-Hong Ma, Xian-Liang Zhou
BACKGROUND: Xinfuli Granule (XG), a compound Chinese herbal medicine, has been effectively used in China for the treatment of heart failure for more than fifty years. This study aimed to investigate the effects and the underlying mechanisms of Xinfuli in rats with doxorubicin-induced cardiotoxicity. METHODS: Sprague-Dawley rats were treated with intraperitoneal injection of Doxorubicin (DOX, 2.5 mg/kg per week) for six weeks, and then randomly divided into four groups which received intragastrically administration of normal saline (control group) or different dosage of XG (0...
December 2016: Journal of Geriatric Cardiology: JGC
https://www.readbyqxmd.com/read/28316175/-diagnostic-value-of-combining-serum-soluble-st2-and-interleukin-33-for-heart-failure-patients-with-preserved-left-ventricular-ejection-fraction
#4
N S Luo, H F Zhang, P M Liu, Y Q Lin, T C Huang, Y Yang, J F Wang
Objective: Diagnostic efficacy of serum markers is low for heart failure patients with preserved left ventricular ejection fraction (HF-pEF) as compared to heart failure patients with reduced left ventricular ejection fraction.We sought to explore the diagnostic value of serum levels of soluble ST2 (sST2) combined with interleukin-33 (IL-33) for the diagnosis of HF-pEF in this study. Methods: A total of 376 patients with HF-pEF (HF group), 376 matched-control patients without heart failure who shared similar clinical characteristics (non-HF group) were included in the study...
March 24, 2017: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28315356/the-effect-of-angiotensin-receptor-neprilysin-inhibitor-sacubitril-valsartan-on-central-nervous-system-amyloid-%C3%AE-concentrations-and-clearance-in-the-cynomolgus-monkey
#5
Heidi A Schoenfeld, Tim West, Philip B Verghese, Mary Holubasch, Neeta Shenoy, David Kagan, Chiara Buono, Wei Zhou, Marc DeCristofaro, Julie Douville, Geoffrey G Goodrich, Keith Mansfield, Chandra Saravanan, Frederic Cumin, Randy L Webb, Randall J Bateman
Sacubitril/valsartan (LCZ696) is the first angiotensin receptor neprilysin inhibitor approved to reduce cardiovascular mortality and hospitalization in patients with heart failure with reduced ejection fraction. As neprilysin (NEP) is one of several enzymes known to degrade amyloid-β (Aβ), there is a theoretical risk of Aβ accumulation following long-term NEP inhibition. The primary objective of this study was to evaluate the potential effects of sacubitril/valsartan on central nervous system clearance of Aβ isoforms in cynomolgus monkeys using the sensitive Stable Isotope Labeling Kinetics (SILK™)-Aβ methodology...
March 15, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28314504/low-ejection-fraction-in-donor-hearts-is-not-directly-associated-with-increased-recipient-mortality
#6
Carol W Chen, Michael H Sprys, Ann C Gaffey, Jennifer J Chung, Kenneth B Margulies, Michael A Acker, Pavan Atluri
BACKGROUND: Reduced left ventricular ejection fraction (EF) in the donor heart is often a contraindication for transplant. However, small studies have validated the use of hearts with evidence of myocardial dysfunction to boost the number of organs available for transplant. We hypothesize that donor hearts with reduced EF undergo myocardial recovery after transplant and result in equivalent recipient survival compared with grafts with normal function. METHODS: We examined post-operative outcomes of heart recipients in the database of the United Network for Organ Sharing...
February 4, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28303624/effect-of-eplerenone-in-patients-with-heart-failure-and-reduced-ejection-fraction-potential-effect-modification-by-abdominal-obesity-insight-from-the-emphasis-hf-trial
#7
Arnaud Olivier, Bertram Pitt, Nicolas Girerd, Zohra Lamiral, Jean-Loup Machu, John J V McMurray, Karl Swedberg, Dirk J van Veldhuisen, Timothy J Collier, Stuart J Pocock, Patrick Rossignol, Faiez Zannad, Anne Pizard
AIMS: An excessive production of aldosterone influences outcome in patients with heart failure (HF) and in obese patients. Findings from laboratory studies suggest that chronic aldosterone blockade maybe more beneficial in abdominally obese HF-prone rats. In the current study, we investigated if the clinical response to a mineralocorticoid receptor antagonist in mildly symptomatic HF patients varied by abdominal obesity. METHODS AND RESULTS: A total of 2587 NYHA class II, reduced ejection fraction HF (HFrEF) patients enrolled in the EMPHASIS-HF trial were randomly assigned to eplerenone and placebo...
March 16, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28299615/remote-monitoring-in-heart-failure-the-current-state
#8
REVIEW
Rajeev C Mohan, J Thomas Heywood, Roy S Small
The treatment of congestive heart failure is an expensive undertaking with much of this cost occurring as a result of hospitalization. It is not surprising that many remote monitoring strategies have been developed to help patients maintain clinical stability by avoiding congestion. Most of these have failed. It seems very unlikely that these failures were the result of any one underlying false assumption but rather from the fact that heart failure is a progressive, deadly disease and that human behavior is hard to modify...
March 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28299572/early-weight-loss-independent-effects-of-sleeve-gastrectomy-on-diet-induced-cardiac-dysfunction-in-obese-wistar-rats
#9
Tammy L Kindel, Tom Foster, Paul Goldspink, Steven J Kindel, John Corbett, Michael Widlanksy, Jennifer Strande
INTRODUCTION: Several reports suggest that bariatric surgery significantly improves cardiac function in patients with obesity cardiomyopathy. The mechanism is unknown but may be due to weight-loss independent factors. We predict that the changes in gastrointestinal anatomy after a rodent model of sleeve gastrectomy (SG) will have weight-loss independent effects on cardiac dysfunction. METHODOLOGY: Cardiac dysfunction was induced by feeding a 60% kcal from fat diet to male Wistar rats for 10 weeks...
March 15, 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28290874/-the-impact-of-asymptomatic-left-ventricular-dilatation-on-the-course-of-anterior-myocardial-infarction
#10
M T Beishenkulov, A K Ibraeva, Z M Chazymova
AIM: to elucidate effect of asymptomatic left ventricular (LV) dilatation on the course of myocardial infarction (MI). MATERIAL AND METHODS: LV remodeling and diastolic function, as well as inter- and intraventricular asynchrony were studied in 58 patients with primary anterior MI without signs of heart failure and ejection fraction >40% on month 12 of the disease. Patients were divided into 2 groups: with normal-sized left ventricle (LV end diastolic size [EDS] <5...
August 2016: Kardiologiia
https://www.readbyqxmd.com/read/28284461/right-ventricular-systolic-dysfunction-in-chagas-disease-defined-by-speckle-tracking-echocardiography-a-comparative-study-with-cardiac-magnetic-resonance-imaging
#11
Henrique T Moreira, Gustavo J Volpe, José A Marin-Neto, Chike C Nwabuo, Bharath Ambale-Venkatesh, Luis G Gali, Oswaldo C Almeida-Filho, Minna M D Romano, Antonio Pazin-Filho, Benedito C Maciel, João A C Lima, André Schmidt
BACKGROUND: Chagas disease leads to biventricular heart failure, usually with prominent systemic congestion. Although echocardiography is widely used in clinical routine, the utility of echocardiographic parameters to detect right ventricular (RV) systolic dysfunction in patients with Chagas disease is unknown. We sought to study the diagnostic value of echocardiography, including speckle-tracking parameters, to distinguish individuals with RV systolic dysfunction from those with normal RV systolic function in Chagas disease using cardiac magnetic resonance (CMR) as the reference method...
March 8, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28276870/renal-sympathetic-denervation-for-treatment-of-patients-with-heart-failure-summary-of-the-available-evidence
#12
Wail Nammas, Juhani Koistinen, Tuomas Paana, Pasi P Karjalainen
Heart failure syndrome results from compensatory mechanisms that operate to restore - back to normal - the systemic perfusion pressure. Sympathetic overactivity plays a pivotal role in heart failure; norepinephrine contributes to maintenance of the systemic blood pressure and increasing preload. Cardiac norepinephrine spillover increases in patients with heart failure; norepinephrine exerts direct toxicity on cardiac myocytes resulting in a decrease of synthetic activity and/or viability. Importantly, cardiac norepinephrine spillover is a powerful predictor of mortality in patients with moderate to severe HF...
February 10, 2017: Annals of Medicine
https://www.readbyqxmd.com/read/28269196/characterization-of-patient-specific-biventricular-mechanics-in-heart-failure-with-preserved-ejection-fraction-hyperelastic-warping
#13
Hua Zou, Xiaodan Zhao, Xi Ce, Lik Chuan Lee, Martin Genet, Yi Su, Rusan Tan, Liang Zhong
Heart failure with preserved ejection fraction (HFPEF) is considered as a major public health problem. Traditionally, HFPEF is diagnosed based on a "normal" EF, but the studies have explored the potential role of left ventricular mechanics. Furthermore, right ventricular mechanics and bi-ventricular interaction in HFPEF is currently not well understood. In this study, we aim to develop a framework using a hyperelastic warping approach to quantify bi-ventricular and septum strains from cardiac magnetic resonance (CMR) images...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28258906/association-between-subclinical-left-ventricular-systolic-dysfunction-and-glycemic-control-in-asymptomatic-type-2-diabetic-patients-with-preserved-left-ventricular-function
#14
Giacomo Zoppini, Corinna Bergamini, Stefano Bonapace, Andrea Rossi, Maddalena Trombetta, Alessandro Mantovani, Anna Toffalini, Laura Lanzoni, Lorenzo Bertolini, Luciano Zenari, Enzo Bonora, Giovanni Targher
BACKGROUND: Type 2 diabetes is strongly associated with the occurrence of cardiovascular diseases, especially heart failure. Some studies have suggested that subclinical systolic dysfunction as assessed by tissue Doppler imaging (TDI) is already present in uncomplicated diabetic patients with normal left ventricular ejection fraction (LVEF). Considering the importance of this aspect, the aim of this cross-sectional study was to examine the relationship between glycated hemoglobin and mean s' wave velocity (a reliable measure of early LV systolic dysfunction) in a cohort of type 2 diabetic outpatients with preserved LVEF and without ischemic heart disease...
February 13, 2017: Journal of Diabetes and its Complications
https://www.readbyqxmd.com/read/28254175/relationship-between-physical-activity-body-mass-index-and-risk-of-heart-failure
#15
Ambarish Pandey, Michael LaMonte, Liviu Klein, Colby Ayers, Bruce M Psaty, Charles B Eaton, Norrina B Allen, James A de Lemos, Mercedes Carnethon, Philip Greenland, Jarett D Berry
BACKGROUND: Lower leisure-time physical activity (LTPA) and higher body mass index (BMI) are independently associated with risk of heart failure (HF). However, it is unclear if this relationship is consistent for both heart failure with preserved ejection fraction (HFpEF) and heart failure with reduced ejection fraction (HFrEF). OBJECTIVES: This study sought to quantify dose-response associations between LTPA, BMI, and the risk of different HF subtypes. METHODS: Individual-level data from 3 cohort studies (WHI [Women's Health Initiative], MESA [Multi-Ethnic Study of Atherosclerosis], and CHS [Cardiovascular Health Study]) were pooled and participants were stratified into guideline-recommended categories of LTPA and BMI...
March 7, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28251781/-123-i-mibg-imaging-for-detection-of-anthracycline-induced-cardiomyopathy
#16
REVIEW
Adam H Laursen, Jens Jakob Thune, Martin Hutchings, Philip Hasbak, Andreas Kjaer, Marie B Elming, Rasmus S Ripa
Due to improvements in early detection and treatment of malignant disease, the population of cancer survivors is constantly expanding. Cancer survivors are faced with chemotherapy-related long-term side effects, including irreversible cardiac injury with risk of heart failure (HF). Numerous antineoplastic regimens are associated with risk of cardiac side effects, but anthracyclines in particular carry a severe risk of cardiotoxicity. Currently, serial echocardiographic evaluation of resting left ventricular ejection fraction (LVEF) is the gold standard for monitoring anthracycline-induced cardiac side effects from chemotherapy...
March 2, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28246077/improved-diastolic-function-is-associated-with-higher-cardiac-output-in-patients-with-heart-failure-irrespective-of-left-ventricular-ejection-fraction
#17
Tomoyuki Tobushi, Masatsugu Nakano, Kazuya Hosokawa, Hidenobu Koga, Akira Yamada
BACKGROUND: Little is known regarding the impact of diastolic function on cardiac output (CO) in patients with heart failure, particularly in patients with lower ejection fraction. This study aimed to evaluate the impact of end-diastolic pressure-volume relationship (EDPVR) on CO and end-diastolic pressure (EDP). METHODS AND RESULTS: We retrospectively analyzed 1840 consecutive patients who underwent heart catheterization. We divided patients into 8 groups according to ejection fraction (EF) (35-45%, 46-55%, 56-65%, and 66-75%) and EDP (>16 or ≤16 mm Hg)...
February 28, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28240427/mitral-systolic-velocity-at-peak-exercise-predicts-impaired-exercise-capacity-in-patients-with-heart-failure-with-preserved-ejection-fraction
#18
Kenji Masada, Takayuki Hidaka, Yu Harada, Mirai Kinoshita, Kiho Itakura, Akifumi Higashi, Hiroto Utsunomiya, Yasuki Kihara
BACKGROUND: Nearly half of patients with heart failure have normal left ventricular ejection fraction (LVEF), but their prognosis is no better than those with reduced LVEF. Although peak oxygen consumption (VO2 ) is an independent predictor of mortality in heart failure, it is unclear how cardiac function during exercise contributes to peak VO2 . Therefore, we explored the useful parameters measured by exercise stress echocardiography to predict peak VO2 in patients with heart failure with preserved LVEF (HFpEF)...
February 2017: Echocardiography
https://www.readbyqxmd.com/read/28237273/sex-differences-in-leptin-modulate-ventilation-in-heart-failure
#19
Ivan Cundrle, Virend K Somers, Prachi Singh, Bruce D Johnson, Christopher G Scott, Lyle J Olson
BACKGROUND: Leptin modulates ventilation and circulating levels are higher in normal women than men. OBJECTIVES: The aim of this study was to compare exercise ventilation and gas exchange in men and women with heart failure (HF) and their relation to circulating leptin concentration. METHODS: Consecutive HF patients were studied by cardiopulmonary exercise testing and assay of circulating leptin concentration. RESULTS: Fifty-seven men and 20 women were similar with respect to age, BMI, NYHA class, left ventricular ejection fraction, and peak oxygen consumption (all p > 0...
February 23, 2017: Heart & Lung: the Journal of Critical Care
https://www.readbyqxmd.com/read/28229912/mid-diastolic-left-ventricular-volume-and-mass-normal-values-for-coronary-computed-tomography-angiography
#20
Daniel Juneau, Fernanda Erthal, Owen Clarkin, Atif Alzahrani, Ali Alenazy, Alomgir Hossain, Joao R Inacio, Girish Dwivedi, Alexander J Dick, Frank J Rybicki, Benjamin J W Chow
BACKGROUND: The adoption of prospectively ECG-triggered acquisition coronary computed tomography angiography (CTA) has resulted in the inability to measure left ventricle (LV) end-diastolic volume and LV ejection fraction. However other prognostic measures such as LV mass and LV mid-diastolic volume (LVMDV) can still be assessed. The objective of this study is to establish normal reference values for LVMDV and LV mass. METHODS: Left ventricular mid-diastolic volumes and LV mass were prospectively measured in 2647 consecutive 'normal' patients undergoing prospectively ECG-triggered coronary CTA...
February 10, 2017: Journal of Cardiovascular Computed Tomography
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