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Heart failure normal ejection fraction

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https://www.readbyqxmd.com/read/28229912/mid-diastolic-left-ventricular-volume-and-mass-normal-values-for-coronary-computed-tomography-angiography
#1
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
https://www.readbyqxmd.com/read/28229200/-current-impact-of-cardiac-implantable-electronic-devices
#2
J Kuschyk, B Rudic, M Borggrefe, I Akin
Sudden cardiac death and chronic heart failure are among the main contributors to persisting high mortality rates in Germany. In addition to removal of causal factors and guideline-conform pharmacological therapy, therapy with cardiac implantable electronic devices (CIED) is of undisputed importance. Subcutaneous defibrillators have the advantage that they do not have intracardiac electrodes but still have the same efficacy and safety. For patients with a wide QRS complex and reduced ejection fraction, cardiac resynchronization has led to a reduction of morbidity and mortality...
February 22, 2017: Herz
https://www.readbyqxmd.com/read/28227426/characterization-of-patient-specific-biventricular-mechanics-in-heart-failure-with-preserved-ejection-fraction-hyperelastic-warping
#3
Hua Zou, Xiaodan Zhao, Xi Ce, Lik Chuan Lee, Martin Genet, Yi Su, Rusan Tan, Liang Zhong, Hua Zou, Xiaodan Zhao, Xi Ce, Lik Chuan Lee, Martin Genet, Yi Su, Rusan Tan, Liang Zhong, Rusan Tan, Martin Genet, Hua Zou, Lik Chuan Lee, Yi Su, Liang Zhong, Xiaodan Zhao, Xi Ce
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/28227219/hemodynamic-determinants-and-ventriculo-arterial-coupling-are-sex-associated-in-heart-failure-patients
#4
Peter L Kerkhof, Guy R Heyndrickx, John K-J Li, Peter L Kerkhof, Guy R Heyndrickx, John K-J Li, Peter L Kerkhof, John K J Li, Guy R Heyndrickx
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/28213914/novel-method-to-assess-intrinsic-heart-rate-recovery-in-ambulatory-ecg-recordings-tracks-cardioprotective-effects-of-chronic-autonomic-regulation-therapy-in-patients-enrolled-in-the-anthem-hf-study
#5
Gerrard M Carlson, Imad Libbus, Badri Amurthur, Bruce H KenKnight, Richard L Verrier
BACKGROUND: Postexercise heart rate recovery (HRR) is a powerful and independent predictor of mortality. Autonomic regulation therapy (ART) with chronic vagus nerve stimulation (VNS) has been shown to improve ventricular function in patients with chronic heart failure. However, the effect of ART on HRR in patients with heart failure remains unknown. METHODS: A new measure involving quantification of intrinsic HRR was developed for 24-hr ambulatory ECG (AECG) recordings based on spontaneous heart rate changes observed during daily activity in patients with symptomatic heart failure and reduced ejection fraction...
February 17, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28209386/dietary-therapy-in-heart-failure-with-preserved-ejection-fraction-and-or-left-ventricular-diastolic-dysfunction-in-patients-with-metabolic-syndrome
#6
REVIEW
Helene von Bibra, Alexander Ströhle, Martin St John Sutton, Nicolai Worm
BACKGROUND: Heart failure is an ongoing epidemic of left ventricular (LV) dilatation and/or dysfunction due to the increasing prevalence of predisposing risk factors such as age, physical inactivity, (abdominal) obesity, and type-2-diabetes. Approximately half of these patients have diastolic heart failure (HFpEF). The prognosis of HFpEF is comparable to that of systolic heart failure, but without any known effective treatment. DIASTOLIC DYSFUNCTION: A biomathematically corrected diagnostic approach is presented that quantifies diastolic dysfunction via the predominant age dependency of LV diastolic function and unmasks (metabolic) risk factors, that are independent of age and, therefore, potential targets for therapy...
January 5, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28203578/supersized-atheroma-causing-acquired-coarctation-of-aorta-leading-to-heart-failure
#7
Sajin Karakattu, Ghulam Murtaza, Sharma Dinesh, Kamesh Sivagnanam, Jeffrey Schoondyke, Timir Paul
Calcified atheromatous aortic lesion causing significant narrowing of the aorta is an uncommon clinical entity. This calcified atheroma leads to obstruction of the lumen of the aorta simulating acquired coarctation of aorta causing impaired perfusion of lower limbs, visceral ischemia, and hypertension. We report a case of 58-year-old patient who presented with dyspnea on exertion, orthopnea, paroxysmal nocturnal dyspnea, 25-lb weight gain, lower extremity edema, and chest pain. Extensive workup including computed tomography and magnetic resonance imaging revealed a large calcific mass in the aortic arch causing his presenting symptoms...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28197277/scoring-system-based-on-electrocardiogram-features-to-predict-the-type-of-heart-failure-in-patients-with-chronic-heart-failure
#8
Purnasidha Bagaswoto Hendry, Lucia Krisdinarti, Maharani Erika
BACKGROUND: Heart failure (HF) is divided into heart failure with reduced ejection fraction (HFrEF) and heart failure with preserved ejection fraction (HFpEF). Mortality from HF is inversely related to left ventricular function. Additional studies are required to distinguish between these two types of HF. A previous study showed that HFrEF is less likely when electrocardiogram (ECG) findings are normal. This study aims to create a scoring system based on ECG findings that will predict the type of HF...
June 2016: Cardiology Research
https://www.readbyqxmd.com/read/28194841/impaired-left-ventricular-global-longitudinal-strain-in-patients-with-heart-failure-with-preserved-ejection-fraction-insights-from-the-relax-trial
#9
Adam D DeVore, Steven McNulty, Fawaz Alenezi, Mads Ersboll, Justin M Vader, Jae K Oh, Grace Lin, Margaret M Redfield, Gregory Lewis, Marc J Semigran, Kevin J Anstrom, Adrian F Hernandez, Eric J Velazquez
BACKGROUND: While abnormal left ventricular (LV) global longitudinal strain (GLS) has been described in patients with heart failure with preserved ejection fraction (HFpEF), its prevalence and clinical significance are poorly understood. METHODS AND RESULTS: Patients enrolled in the RELAX trial of sildenafil in HFpEF (LV ejection fraction ≥50%) in whom two-dimensional, speckle-tracking LV GLS was possible (n = 187) were analysed. The distribution of LV GLS and its associations with clinical characteristics, LV structure and function, biomarkers, exercise capacity and quality of life were assessed...
February 14, 2017: European Journal of Heart Failure
https://www.readbyqxmd.com/read/28185703/bnp-and-obesity-in-acute-decompensated-heart-failure-with-preserved-vs-reduced-ejection-fraction-the-atherosclerosis-risk-in-communities-surveillance-study
#10
Umair Khalid, Lisa Miller Wruck, Pedro Miguel Quibrera, Biykem Bozkurt, Vijay Nambi, Salim S Virani, Hani Jneid, Sunil Agarwal, Patricia P Chang, Laura Loehr, Sukhdeep Singh Basra, Wayne Rosamond, Christie M Ballantyne, Anita Deswal
BACKGROUND: Levels of B-type natriuretic peptide (BNP), a prognostic marker in patients with heart failure (HF), are lower among HF patients with obesity or preserved Left Ventricular Ejection Fraction (LVEF). We examined the distribution and prognostic value of BNP across BMI categories in acute decompensated heart failure (ADHF) patients with preserved vs. reduced LVEF. METHODS: We analyzed data from the Atherosclerosis Risk in Communities (ARIC) HF surveillance study which sampled and adjudicated ADHF hospitalizations in patients aged ≥55years from 4 US communities (2005-2009)...
January 31, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28184975/alkaline-phosphatase-a-biomarker-of-cardiac-function-in-pediatric-patients
#11
Elizabeth S Makil, Xinyu Tang, Elizabeth A Frazier, R Thomas Collins
Myocardial dysfunction and heart failure are common in pediatric patients with congenital and acquired heart disease. Alkaline phosphatase (AP) has been suggested as a biomarker for myocardial dysfunction after Fontan operation. We hypothesized that pediatric patients with myocardial dysfunction requiring orthotopic heart transplant (OHT) have diminished AP compared to normal. A retrospective review was performed in all patients who underwent OHT at Arkansas Children's Hospital between January 2007 and October 2012...
February 9, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28169556/blood-pressure-dynamics-during-exercise-rehabilitation-in-heart-failure-patients
#12
Idan Hecht, Michael Arad, Dov Freimark, Robert Klempfner
Background Patients suffering from heart failure (HF) may demonstrate an abnormal blood pressure response to exercise (ABPRE), which may revert to a normal one following medical treatment. It is assumed that this change correlates positively with prognosis and functional aspects. The aim of this study was to characterize patients with ABPRE and assess ABPRE normalization and the correlation with clinical and functional outcomes. Methods In the study, 651 patients with HF who underwent cardiac rehabilitation (CR) were examined...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28167498/myocardial-oxygen-consumption-and-efficiency-in-aortic-valve-stenosis-patients-with-and-without-heart-failure
#13
Nils Henrik Stubkjær Hansson, Jens Sörensen, Hendrik Johannes Harms, Won Yong Kim, Roni Nielsen, Lars P Tolbod, Jørgen Frøkiær, Kirsten Bouchelouche, Karen Kaae Dodt, Inger Sihm, Steen Hvitfeldt Poulsen, Henrik Wiggers
BACKGROUND: Myocardial oxygen consumption (MVO2) and its coupling to contractile work are fundamentals of cardiac function and may be involved causally in the transition from compensated left ventricular hypertrophy to failure. Nevertheless, these processes have not been studied previously in patients with aortic valve stenosis (AS). METHODS AND RESULTS: Participants underwent (11)C-acetate positron emission tomography, cardiovascular magnetic resonance, and echocardiography to measure MVO2 and myocardial external efficiency (MEE) defined as the ratio of left ventricular stroke work and the energy equivalent of MVO2...
February 6, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28163834/does-heart-rate-variability-correlate-with-long-term-prognosis-in-myocardial-infarction-patients-treated-by-early-revascularization
#14
Leonida Compostella, Nenad Lakusic, Caterina Compostella, Li Van Stella Truong, Sabino Iliceto, Fabio Bellotto
AIM: To assess the prevalence of depressed heart rate variability (HRV) after an acute myocardial infarction (MI), and to evaluate its prognostic significance in the present era of immediate reperfusion. METHODS: Time-domain HRV (obtained from 24-h Holter recordings) was assessed in 326 patients (63.5 ± 12.1 years old; 80% males), two weeks after a complicated MI treated by early reperfusion: 208 ST-elevation myocardial infarction (STEMI) patients (in which reperfusion was successfully obtained within 6 h of symptoms in 94% of cases) and 118 non-ST-elevation myocardial infarction (NSTEMI) patients (percutaneous coronary intervention was performed within 24 h and successful in 73% of cases)...
January 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28159807/resveratrol-improves-exercise-performance-and-skeletal-muscle-oxidative-capacity-in-heart-failure
#15
Miranda M Sung, Nikole J Byrne, Ian M Robertson, Ty T Kim, Victor Samokhvalov, Jody Levasseur, Carrie-Lynn M Soltys, David Fung, Neil Tyreman, Emmanuel Denou, Kelvin Jones, John M Seubert, Jonathan D Schertzer, Jason R B Dyck
We investigated whether treatment of mice with established pressure overload-induced heart failure (HF) with the naturally occurring polyphenol resveratrol could improve functional symptoms of clinical HF such as fatigue and exercise intolerance. C57Bl/6N mice were subjected to either sham or transverse aortic constriction surgery to induce HF. Three weeks post-surgery, a cohort of mice with established HF (% ejection fraction; %EF<45) was administered resveratrol (~450 mg/kg/d) or vehicle for 2 weeks. Although %EF was similar between both groups of HF mice, those mice treated with resveratrol had increased total physical activity levels and exercise capacity...
February 3, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28159195/influence-of-left-ventricular-stroke-volume-on-incident-heart-failure-in-a-population-with-preserved-ejection-fraction-from-the-strong-heart-study
#16
Marina De Marco, Eva Gerdts, Costantino Mancusi, Mary J Roman, Mai Tone Lønnebakken, Elisa T Lee, Barbara V Howard, Richard B Devereux, Giovanni de Simone
At a given level of left ventricular (LV) systolic function, LV pump performance (assessed by stroke index [SVi]) may differ, depending on LV size. We evaluated whether low SVi may be considered a marker of risk for incident congestive heart failure (HF), independent of LV geometry and systolic function, assessed by ejection fraction (EF) or midwall fractional shortening (MFS), in a large population-based sample with normal EF. Clinical and echocardiographic data from the second Strong Heart Study (SHS) examination, including 2,885 American Indians (59 ± 8 years; 63% women) with normal EF (EF ≥51% in men and EF ≥55% in women) and without prevalent HF or significant valve disease, were analyzed...
January 5, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28143688/sleep-apnea-state-of-the-art
#17
REVIEW
Martin R Cowie
Many patient with, or at risk of, cardiovascular disease have sleep disordered breathing (SDB), which can be either obstructive (with intermittent collapse of the upper airway) or central (episodic loss of respiratory drive). SDB is associated with sleep disturbance, hypoxemia, hemodynamic changes, and sympathetic activation. Such patients have a worse prognosis than those without SDB. Mask-based therapies of positive airway pressure targeted at SDB can improve measures of sleep quality and partially normalize the sleep and respiratory physiology, but recent randomized trials of cardiovascular outcomes in SDB have either been neutral (obstructive sleep apnea) or suggested the possibility of harm, likely from increased sudden death, in central sleep apnea...
December 20, 2016: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28134561/long-term-low-dose-dietary-resveratrol-supplement-reduces-cardiovascular-structural-and-functional-deterioration-in-chronic-heart-failure-in-rats
#18
Ismayil Ahmet, Hyun-Jin Tae, Edward G Lakatta, Mark Talan
A short-term exposure to resveratrol at high dosages exerts a remarkable cardioprotective effect. Whether a long-term exposure to resveratrol at low dosages that can be obtained through consumption of a resveratrol-rich diet is beneficial to heart diseases is unknown. We tested the effects of a resveratrol-enriched diet on cardiovascular remodeling of chronic heart failure (CHF) in rats resulting from permanent ligation of left coronary artery. Two weeks after surgery, rats were started on either a resveratrol-enriched (R; 5 mg/kg per day; n = 23) or normal (Control; n = 23) diet for next 10 months...
December 17, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28127817/effect-of-cardiac-resynchronization-therapy-on-myocardial-fibrosis-and-relevant-cytokines-in-a-canine-model-with-experimental-heart-failure
#19
Jingfeng Wang, Xue Gong, Haiyan Chen, Shengmei Qin, Nianwei Zhou, Yangang Su, Junbo Ge
INTRODUCTION: Though cardiac resynchronization therapy(CRT) has now proved to be effective on cardiac reverse remodeling, data on the underlying molecular changes are limited. The present study aims to investigate the expression of cytokines concerning myocardial fibrosis in dyssynchronous heart failure (HF) and the potential benefits of CRT. METHODS AND RESULTS: Left bundle branch ablation and rapid pacing was performed to induce a canine model of asynchronous HF...
January 27, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28120157/subclinical-markers-of-cardiovascular-disease-predict-adverse-outcomes-in-chronic-kidney-disease-patients-with-normal-left-ventricular-ejection-fraction
#20
Samir Sulemane, Vasileios F Panoulas, Athanasios Bratsas, Julia Grapsa, Edwina A Brown, Petros Nihoyannopoulos
Emerging cardiovascular biomarkers, such as speckle tracking echocardiography (STE) and aortic pulse wave velocity (aPWV), have recently demonstrated the presence of subclinical left ventricular dysfunction and arterial stiffening in patients with chronic kidney disease (CKD) and no previous cardiovascular history. However, limited information exists on the prognostic impact of these biomarkers. We aimed to investigate whether STE and aPWV predict major adverse cardiac events (MACE) in this patient population...
January 24, 2017: International Journal of Cardiovascular Imaging
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