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"diastolic dysfunction" OR "heart failure with preserved ejection fraction"

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https://www.readbyqxmd.com/read/28227426/characterization-of-patient-specific-biventricular-mechanics-in-heart-failure-with-preserved-ejection-fraction-hyperelastic-warping
#1
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/28225712/left-ventricular-function-and-exercise-performance-in-idiopathic-dilated-cardiomyopathy-role-of-tissue-doppler-imaging
#2
Elena Zambon, Annamaria Iorio, Concetta Di Nora, Cosimo Carriere, Elena Abate, Marco Merlo, Giulia Barbati, Andrea Di Lenarda, Bruno Pinamonti, Piergiuseppe Agostoni, Gianfranco Sinagra
BACKGROUND: To examine the relationship between left ventricular (LV) function evaluated at echocardiography and exercise performance in idiopathic dilated cardiomyopathy (IDCM) patients. METHODS AND RESULTS: We enrolled 76 consecutive IDCM patients in sinus rhythm, undergoing cardiopulmonary exercise testing and echocardiography [49 ± 13 years old; LV ejection fraction 31 ± 7%, LV end-diastolic volume 96 ± 31 ml/m; peak oxygen consumption (peak VO2/kg) 18 ± 5...
April 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28223475/reduced-first-phase-ejection-fraction-and-sustained-myocardial-wall-stress-in-hypertensive-patients-with-diastolic-dysfunction-a-manifestation-of-impaired-shortening-deactivation-that-links-systolic-to-diastolic-dysfunction-and-preserves-systolic-ejection-fraction
#3
Haotian Gu, Ye Li, Henry Fok, John Simpson, Jonathan C Kentish, Ajay M Shah, Philip J Chowienczyk
Impaired shortening deactivation of cardiac myocytes could sustain myocardial contraction, preserving ejection fraction at the expense of diastolic dysfunction. We examined the relationship between first-phase ejection fraction (EF1), the fraction of left ventricular volume ejected from the start of systole to the time of the first peak in left ventricular pressure (corresponding to the time of maximal ventricular shortening) to the duration of myocardial contraction and diastolic function in patients with hypertension (n=163), and varying degrees of diastolic dysfunction...
February 21, 2017: Hypertension
https://www.readbyqxmd.com/read/28219923/heart-failure-with-preserved-ejection-fraction-an-opportunity-for-reflection
#4
EDITORIAL
Deepak K Gupta
No abstract text is available yet for this article.
February 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28219921/predictive-value-of-dobutamine-stress-perfusion-echocardiography-in-contemporary-end-stage-liver-disease
#5
Bipul Baibhav, Chetaj A Mahabir, Feng Xie, Valerie K Shostrom, Timothy M McCashland, Thomas R Porter
BACKGROUND: The assessment of cardiac risk in contemporary liver transplantation (LT) has required more sensitive testing for the detection of occult coronary artery disease as well as microvascular and functional cardiac abnormalities. Because dobutamine stress perfusion echocardiography provides an assessment of both regional systolic and diastolic function as well as microvascular perfusion (MVP), we sought to examine its incremental value in this setting. METHODS AND RESULTS: We evaluated the predictive value of dobutamine stress perfusion echocardiography in 296 adult patients with end-stage liver disease and preserved systolic function who underwent LT between 2008 and 2014...
February 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28219917/isosorbide-dinitrate-with-or-without-hydralazine-does-not-reduce-wave-reflections-left-ventricular-hypertrophy-or-myocardial-fibrosis-in-patients-with-heart-failure-with-preserved-ejection-fraction
#6
Payman Zamani, Scott Akers, Haideliza Soto-Calderon, Melissa Beraun, Maheswara R Koppula, Swapna Varakantam, Deepa Rawat, Prithvi Shiva-Kumar, Philip G Haines, Jesse Chittams, Raymond R Townsend, Walter R Witschey, Patrick Segers, Julio A Chirinos
BACKGROUND: Wave reflections, which are increased in patients with heart failure with preserved ejection fraction, impair diastolic function and promote pathologic myocardial remodeling. Organic nitrates reduce wave reflections acutely, but whether this is sustained chronically or affected by hydralazine coadministration is unknown. METHODS AND RESULTS: We randomized 44 patients with heart failure with preserved ejection fraction in a double-blinded fashion to isosorbide dinitrate (ISDN; n=13), ISDN+hydralazine (ISDN+hydral; n=15), or placebo (n=16) for 6 months...
February 20, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28219811/stress-echocardiography-in-patients-who-experienced-mechanical-ventilation-weaning-failure
#7
Manuel Ruiz-Bailén, Jesús Cobo-Molinos, Ana Castillo-Rivera, María Dolores Pola-Gallego-de-Guzmán, Antonio Cárdenas-Cruz, Antonio Martínez-Amat, María Sevilla-Martínez, Clara Hernández-Caballero
INTRODUCTION: Critically ill patients may suffer varying degrees of temporary myocardial dysfunction during respiratory weaning that could play an important role in weaning failure. OBJECTIVES: In this study, we tried to assess the existence of temporary diastolic dysfunction during respiratory weaning. METHODS: Inclusion period is from 2006 to 2015. In this study, we included 181 ventilated patients with cardiogenic shock that were being weaned from mechanical ventilation...
January 18, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/28219672/changes-in-cardiovascular-function-based-on-adrenalin-and-norepinephrine-metabolism-in-ovariectomized-rats
#8
Hai Jiang, Wenpei Bai, Wenjuan Wang, Jing Zhang, Ke Wang, Yao Liu, Shuya Liu, Jing Jia, Lihua Qin
Menopause is a cardiovascular risk factor in women, and cardiovascular changes during perimenopause can increase the risk. We observed the influence of plasma adrenalin and norepinephrine and their metabolites on the cardiovascular system and the rectification effect of estrogen in ovariectomized rats. Fifty-four adult female Sprague-Dawley rats were randomly divided into sham (Sham), ovariectomized (OVX), or ovariectomized+estrogen treatment groups (OVX+E), with 18 rats in each. The Sham and OVX groups were given normal saline and the OVX+E group was given estradiol valerate beginning 2weeks after ovariectomy and continuing for 4weeks...
February 17, 2017: Experimental Gerontology
https://www.readbyqxmd.com/read/28219595/comparison-of-post-liver-transplantation-outcomes-in-portopulmonary-hypertension-and-pulmonary-venous-hypertension-a-single-center-experience
#9
P Rajaram, A Parekh, M Fisher, J Kempker, R Subramanian
BACKGROUND: In potential liver transplant candidates, pulmonary vascular diseases, including portopulmonary hypertension (PoPH) and pulmonary venous hypertension (PVH), can be associated with high morbidity and mortality. Although there are clear guidelines regarding management and transplant listing criteria for patients with PoPH, the listing criteria for PVH are not well defined. OBJECTIVE: The aim of this study was to describe and compare the perioperative and postoperative morbidity and mortality associated with PoPH and PVH in patients undergoing liver transplantation...
March 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28218632/clinical-case-of-the-month-group-g-streptococcal-bacteremia-secondary-to-a-burn-wound-infection
#10
Paige Deichmann, Amol Sura, Charles Sanders, Nisha Aravindakshan-Patel, Fred Lopez
A 61-year-old man presented to the emergency department with second degree burns along his right arm and hand. He reported that his knees suddenly gave out while holding a pot of soup resulting in the scalding liquid spilling over his arm. His medical history is significant for alcohol abuse, chronic obstructive pulmonary disease, atrial fibrillation, congestive heart failure with preserved ejection fraction, chronic knee instability, and degenerative joint disease of the spine.
January 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28217313/ghrelin-and-hormonal-markers-under-exercise-training-in-patients-with-heart-failure-with-preserved-ejection-fraction-results-from-the-ex-dhf-pilot-study
#11
Tobias Daniel Trippel, Volker Holzendorf, Martin Halle, Götz Gelbrich, Kathleen Nolte, Andre Duvinage, Silja Schwarz, Tinka Rutscher, Julian Wiora, Rolf Wachter, Christoph Herrmann-Lingen, Hans-Dirk Duengen, Gerd Hasenfuß, Burkert Pieske, Frank Edelmann
BACKGROUND: Over 50% of patients with symptomatic heart failure (HF) experience HF with preserved ejection fraction (HFpEF). Exercise training (ET) is effective in improving cardiorespiratory fitness and dimensions of quality of life in patients with HFpEF. A systemic pro-inflammatory state induced by comorbidities as the cause of myocardial structural and functional alterations has been proposed in HFpEF. ET modifies myocardial structure and has been related to inflammatory state. We investigated Ghrelin, related adipokines, markers of inflammation, and neuro-hormonal activation in patients undergoing a structured ET vs...
February 2017: ESC Heart Failure
https://www.readbyqxmd.com/read/28215921/role-of-myocardial-collagen-in-severe-aortic-stenosis-with-preserved-ejection-fraction-and-symptoms-of-heart-failure
#12
Kattalin Echegaray, Ion Andreu, Ane Lazkano, Iñaki Villanueva, Alberto Sáenz, María Reyes Elizalde, Tomás Echeverría, Begoña López, Asier Garro, Arantxa González, Elena Zubillaga, Itziar Solla, Iñaki Sanz, Jesús González, Alberto Elósegui-Artola, Pere Roca-Cusachs, Javier Díez, Susana Ravassa, Ramón Querejeta
INTRODUCTION AND OBJECTIVES: We investigated the anatomical localization, biomechanical properties, and molecular phenotype of myocardial collagen tissue in 40 patients with severe aortic stenosis with preserved ejection fraction and symptoms of heart failure. METHODS: Two transmural biopsies were taken from the left ventricular free wall. Mysial and nonmysial regions of the collagen network were analyzed. Myocardial collagen volume fraction (CVF) was measured by picrosirius red staining...
February 16, 2017: Revista Española de Cardiología
https://www.readbyqxmd.com/read/28214792/suppression-of-tumorigenicity-2-in-heart-failure-with-preserved-ejection-fraction
#13
Omar F AbouEzzeddine, Paul M McKie, Shannon M Dunlay, Susanna R Stevens, G Michael Felker, Barry A Borlaug, Horng H Chen, Russell P Tracy, Eugene Braunwald, Margaret M Redfield
BACKGROUND: Soluble suppression of tumorigenicity 2 (sST2) receptor is a biomarker that is elevated in certain systemic inflammatory diseases. Comorbidity-driven microvascular inflammation is postulated to play a key role in heart failure with preserved ejection fraction (HFpEF) pathophysiology, but data on how sST2 relates to clinical characteristics or inflammatory conditions or biomarkers in HFpEF are limited. We sought to determine circulating levels and clinical correlates of sST2 in HFpEF...
February 18, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28214335/the-role-of-c-ski-in-regulation-of-tgf%C3%AE-induced-human-cardiac-fibroblast-proliferation-and-ecm-protein-expression
#14
Juan Wang, Liping Guo, Difei Shen, Xiao Xu, Jiaping Wang, Suxia Han, Wen He
Cardiac fibrosis is characterized by over-deposition of extracellular matrix (ECM) proteins and over-proliferation of cardiac fibroblast, and contributes to both systolic and diastolic dysfunction in many cardiac pathophysiologic conditions. Transforming growth factor β 1 (TGFβ1) is as an essential inducing factor of cardiac fibrosis. C-Ski protein has been identified as an inhibitory regulator of TGFβ signaling. In the present study, we revealed the repressive effect of c-Ski on TGFβ1-induced human cardiac fibroblast (HCFB) proliferation and ECM protein increase (Collagen I and α-SMA)...
February 18, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28214081/fev1-and-fvc-predict-all-cause-mortality-independent-of-cardiac-function-results-from-the-population-based-gutenberg-health-study
#15
Christina Magnussen, Francisco M Ojeda, Nargiz Rzayeva, Tanja Zeller, Christoph R Sinning, Norbert Pfeiffer, Manfred Beutel, Maria Blettner, Karl J Lackner, Stefan Blankenberg, Thomas Münzel, Klaus F Rabe, Philipp S Wild, Renate B Schnabel
BACKGROUND: Lung function has previously been related to increased mortality. Whether pulmonary impairment is associated with an increased mortality independent of cardiac dysfunction remains unclear. METHODS: In 15010 individuals from the general population (age range 35-74years, 51% men) in the Gutenberg Health Study we performed spirometry and transthoracic echocardiography. N-terminal pro-B-type natriuretic peptide (Nt-proBNP) and high-sensitive troponin I (hsTnI) were measured in all individuals...
February 3, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28214001/comparison-of-pulmonary-venous-and-left-atrial-remodeling-in-patients-with-atrial-fibrillation-with-hypertrophic-cardiomyopathy-versus-with-hypertensive-heart-disease
#16
Kentaro Yoshida, Hideyuki Hasebe, Yasuaki Tsumagari, Hidekazu Tsuneoka, Mari Ebine, Yoshiko Uehara, Yoshihiro Seo, Kazutaka Aonuma, Noriyuki Takeyasu
Left ventricular diastolic dysfunction in hypertrophic cardiomyopathy (HC) increases susceptibility to atrial fibrillation. Although phenotypical characteristics of the hypertrophied left ventricle are clear, left atrial (LA) and pulmonary venous (PV) remodeling has rarely been investigated. This study aimed to identify differences in LA and PV remodeling between HC and hypertensive heart disease (HHD) using 3-dimensional computed tomography. Included were 33 consecutive patients with HC, 25 with HHD, and 29 without any co-morbidities who were referred for catheter ablation of atrial fibrillation...
January 25, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28211883/the-inflammatory-state-provokes-sexual-dimorphism-in-left-ventricular-and-electrocardiographic-effects-of-chronic-cyclosporine-in-rats
#17
Hany M El-Bassossy, Zainy M Banjar, Mahmoud M El-Mas
Although cardiotoxicity has been recognized as an adverse effect of cyclosporine A (CSA), no information exists regarding sex specificity of CSA cardiotoxicity. We tested the hypothesis that left ventricular (LV) and electrocardiographic (ECG) effects of CSA and related inflammatory/histopathological derangements are sex related. CSA reduced the LV slope of end-systolic pressure volume relationship and increased isovolumic relaxation constant. These effects were more pronounced in male compared to female rats, suggesting LV systolic and diastolic dysfunction...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28210939/deep-phenotyping-of-systemic-arterial-hemodynamics-in-hfpef-part-1-physiologic-and-technical-considerations
#18
REVIEW
Julio A Chirinos
A better understanding of the pathophysiology of heart failure with a preserved left ventricular ejection fraction (HFpEF) is important. Detailed phenotyping of pulsatile hemodynamics has provided important insights into the pathophysiology of left ventricular remodeling and fibrosis, diastolic dysfunction, microvascular disease, and impaired oxygen delivery to peripheral skeletal muscle, all of which contribute to exercise intolerance, the cardinal feature of HFpEF. Furthermore, arterial pulsatile hemodynamic mechanisms likely contribute to the frequent presence of comorbidities, such as renal failure and dementia, in this population...
February 16, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28209764/kcnj11-ablation-is-associated-with-increased-nitro-oxidative-stress-during-ischemia-reperfusion-injury-implications-for-human-ischemic-cardiomyopathy
#19
Bo Zhang, Tatiana Novitskaya, Debra G Wheeler, Zhaobin Xu, Elena Chepurko, Ryan Huttinger, Heng He, Saradhadevi Varadharaj, Jay L Zweier, Yanna Song, Meng Xu, Frank E Harrell, Yan Ru Su, Tarek Absi, Mark J Kohr, Mark T Ziolo, Dan M Roden, Christian M Shaffer, Cristi L Galindo, Quinn S Wells, Richard J Gumina
BACKGROUND: Despite increased secondary cardiovascular events in patients with ischemic cardiomyopathy (ICM), the expression of innate cardiac protective molecules in the hearts of patients with ICM is incompletely characterized. Therefore, we used a nonbiased RNAseq approach to determine whether differences in cardiac protective molecules occur with ICM. METHODS AND RESULTS: RNAseq analysis of human control and ICM left ventricular samples demonstrated a significant decrease in KCNJ11 expression with ICM...
February 2017: Circulation. Heart Failure
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
#20
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
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