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https://www.readbyqxmd.com/read/29333506/murine-models-of-heart-failure-with-preserved-ejection-fraction-a-fishing-expedition
#1
Maria Valero-Muñoz, Warren Backman, Flora Sam
Heart failure with preserved ejection fraction (HFpEF) is characterized by signs and symptoms of HF in the presence of a normal left ventricular (LV) ejection fraction (EF). Despite accounting for up to 50% of all clinical presentations of HF, the mechanisms implicated in HFpEF are poorly understood, thus precluding effective therapy. The pathophysiological heterogeneity in the HFpEF phenotype also contributes to this disease and likely to the absence of evidence-based therapies. Limited access to human samples and imperfect animal models that completely recapitulate the human HFpEF phenotype have impeded our understanding of the mechanistic underpinnings that exist in this disease...
December 2017: JACC. Basic to Translational Science
https://www.readbyqxmd.com/read/29333094/left-ventricular-diastolic-and-systolic-dyssynchrony-and-dysfunction-in-heart-failure-with-preserved-ejection-fraction-and-a-narrow-qrs-complex
#2
Shuang Liu, Zhengyu Guan, Xuanyi Jin, Pingping Meng, Yonghuai Wang, Xianfeng Zheng, Dalin Jia, Chunyan Ma, Jun Yang
Aims: Mechanical dyssynchrony has been reported in heart failure with preserved ejection fraction (HFpEF), with a majority of patients having a narrow QRS complex; however, whether any benefit is observed with restoration of dyssynchrony remains unclear. We sought to assess left ventricular (LV) dyssynchrony and function in HFpEF and elucidate the underlying mechanisms that may account for HFpEF. Methods: Seventy-eighty patients with a narrow QRS complex including 47 with HFpEF, 31 with heart failure with reduced ejection fraction (HFrEF) patients, and 29 with asymptomatic left ventricular diastolic dysfunction (LVDD) were recruited...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29330646/potential-impact-of-sglt2-inhibitors-on-left-ventricular-diastolic-function-in-patients-with-diabetes-mellitus
#3
REVIEW
Hidekazu Tanaka, Ken-Ichi Hirata
The pathogenesis of diabetes mellitus (DM)-related cardiac dysfunction is thought to be multifactorial, and possibly a key factor for the development of heart failure with preserved ejection fraction (HFpEF) in patients with DM and preserved left ventricular (LV) ejection fraction. Currently, there is no effective treatment for HFpEF, which is presented as LV diastolic dysfunction. Furthermore, it is well known that, in addition to DM, hypertension and overweight/obesity are also important factors associated with HFpEF...
January 12, 2018: Heart Failure Reviews
https://www.readbyqxmd.com/read/29322198/association-of-cardiovascular-biomarkers-with-incident-heart-failure-with-preserved-and-reduced-ejection-fraction
#4
Rudolf A de Boer, Matthew Nayor, Christopher R deFilippi, Danielle Enserro, Vijeta Bhambhani, Jorge R Kizer, Michael J Blaha, Frank P Brouwers, Mary Cushman, Joao A C Lima, Hossein Bahrami, Pim van der Harst, Thomas J Wang, Ron T Gansevoort, Caroline S Fox, Hanna K Gaggin, Willem J Kop, Kiang Liu, Ramachandran S Vasan, Bruce M Psaty, Douglas S Lee, Hans L Hillege, Traci M Bartz, Emelia J Benjamin, Cheeling Chan, Matthew Allison, Julius M Gardin, James L Januzzi, Sanjiv J Shah, Daniel Levy, David M Herrington, Martin G Larson, Wiek H van Gilst, John S Gottdiener, Alain G Bertoni, Jennifer E Ho
Importance: Nearly half of all patients with heart failure have preserved ejection fraction (HFpEF) as opposed to reduced ejection fraction (HFrEF), yet associations of biomarkers with future heart failure subtype are incompletely understood. Objective: To evaluate the associations of 12 cardiovascular biomarkers with incident HFpEF vs HFrEF among adults from the general population. Design, Setting, and Participants: This study included 4 longitudinal community-based cohorts: the Cardiovascular Health Study (1989-1990; 1992-1993 for supplemental African-American cohort), the Framingham Heart Study (1995-1998), the Multi-Ethnic Study of Atherosclerosis (2000-2002), and the Prevention of Renal and Vascular End-stage Disease study (1997-1998)...
January 10, 2018: JAMA Cardiology
https://www.readbyqxmd.com/read/29321212/prognostic-value-of-right-ventricular-dysfunction-in-heart-failure-with-reduced-ejection-fraction-superiority-of-longitudinal-strain-over-tricuspid-annular-plane-systolic-excursion
#5
Erberto Carluccio, Paolo Biagioli, Gianfranco Alunni, Adriano Murrone, Cinzia Zuchi, Stefano Coiro, Clara Riccini, Anna Mengoni, Antonella D'Antonio, Giuseppe Ambrosio
BACKGROUND: In heart failure (HF) with reduced ejection fraction, right ventricular (RV) impairment, as defined by reduced tricuspid annular plane systolic excursion, is a predictor of poor outcome. However, peak longitudinal strain of RV free wall (RVFWS) has been recently proposed as a more accurate and sensitive tool to evaluate RV function. Accordingly, we investigated whether RVFWS could help refine prognosis of patients with HF with reduced ejection fraction in whom tricuspid annular plane systolic excursion is still preserved...
January 2018: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29321132/intersection-of-pulmonary-hypertension-and-right-ventricular-dysfunction-in-patients-on-left-ventricular-assist-device-support-is-there-a-role-for-pulmonary-vasodilators
#6
Christopher T Sparrow, Shane J LaRue, Joel D Schilling
Left ventricular assist devices (LVADs) improve survival and quality of life in patients with advanced heart failure. Despite these benefits, combined post- and precapillary pulmonary hypertension can be particularly problematic in patients on LVAD support, often exacerbating right ventricular (RV) dysfunction. Both persistently elevated pulmonary vascular resistance and RV dysfunction are associated with adverse outcomes, including death after LVAD. These observations have led to significant interest in the use of pulmonary vasodilators to treat pulmonary hypertension and preserve RV function among LVAD-supported patients...
January 2018: Circulation. Heart Failure
https://www.readbyqxmd.com/read/29321034/diagnostic-and-prognostic-utility-of-cardiovascular-magnetic-resonance-imaging-in-heart-failure-with-preserved-ejection-fraction-implications-for-clinical-trials
#7
Prathap Kanagala, Adrian S H Cheng, Anvesha Singh, John McAdam, Anna-Marie Marsh, Jayanth R Arnold, Iain B Squire, Leong L Ng, Gerry P McCann
BACKGROUND: Heart failure with preserved ejection fraction (HFpEF) is a poorly characterized condition. We aimed to phenotype patients with HFpEF using multiparametric stress cardiovascular magnetic resonance imaging (CMR) and to assess the relationship to clinical outcomes. METHODS: One hundred and fifty four patients (51% male, mean age 72 ± 10 years) with a diagnosis of HFpEF underwent transthoracic echocardiography and CMR during a single study visit. The CMR protocol comprised cine, stress/rest perfusion and late gadolinium enhancement imaging on a 3T scanner...
January 11, 2018: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/29319788/relationship-of-loop-diuretic-use-with-exercise-intolerance-in-heart-failure-with-preserved-ejection-fraction
#8
David Montero, Thomas Haider
No abstract text is available yet for this article.
January 8, 2018: European Heart Journal. Cardiovascular Pharmacotherapy
https://www.readbyqxmd.com/read/29313987/variable-role-of-carotid-bodies-in-cardiovascular-responses-to-exercise-hypoxia-and-hypercapnia-in-spontaneously-hypertensive-rats
#9
Wioletta Pijacka, Pedro L Katayama, Helio C Salgado, Gisele S Lincevicius, Ruy R Campos, Fiona D McBryde, Julian F R Paton
The carotid body has recently emerged as a promising therapeutic target for treating cardiovascular disease, however the potential impact of carotid bodies removal on the dynamic cardiovascular responses to acute stressors such as exercise, hypoxia and hypercapnia in hypertension is an important safety consideration that has not been studied. We first validated a novel surgical approach to selectively resect the carotid bodies bilaterally (CBR) sparing the carotid sinus baroreflex. Second, we evaluated the impact of CBR on the cardiovascular responses to exercise, hypoxia and hypercapnia in the conscious, chronically instrumented spontaneously hypertensive (SH) rats...
January 5, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29311348/can-oxygen-transport-analysis-tell-us-why-people-with-heart-failure-with-preserved-ejection-fraction-feel-so-poorly
#10
EDITORIAL
Barry A Borlaug
No abstract text is available yet for this article.
January 9, 2018: Circulation
https://www.readbyqxmd.com/read/29311053/reversing-the-cardiac-effects-of-sedentary-aging-in-middle-age-a-randomized-controlled-trial-implications-for-heart-failure-prevention
#11
Erin J Howden, Satyam Sarma, Justin S Lawley, Mildred Opondo, William Cornwell, Douglas Stoller, Marcus A Urey, Beverley Adams-Huet, Benjamin D Levine
Background - Poor fitness in middle age is a risk factor for heart failure, particularly heart failure with a preserved ejection fraction. The development of heart failure with a preserved ejection fraction is likely mediated through increased left ventricular (LV) stiffness, a consequence of sedentary aging. In a prospective, parallel group, randomized controlled trial, we examined the effect of 2 years of supervised highintensity exercise training on LV stiffness. Methods - Sixty-one (48% male) healthy, sedentary, middle-aged participants (53±5 years) were randomly assigned to either 2 years of exercise training (n=34) or attention control (control; n=27)...
January 8, 2018: Circulation
https://www.readbyqxmd.com/read/29309993/engineered-cardiac-tissue-patch-maintains-structural-and-electrical-properties-after-epicardial-implantation
#12
Christopher P Jackman, Asvin M Ganapathi, Huda Asfour, Ying Qian, Brian W Allen, Yanzhen Li, Nenad Bursac
Functional cardiac tissue engineering holds promise as a candidate therapy for myocardial infarction and heart failure. Generation of "strong-contracting and fast-conducting" cardiac tissue patches capable of electromechanical coupling with host myocardium could allow efficient improvement of heart function without increased arrhythmogenic risks. Towards that goal, we engineered highly functional 1 cm × 1 cm cardiac tissue patches made of neonatal rat ventricular cells which after 2 weeks of culture exhibited force of contraction of 18...
January 3, 2018: Biomaterials
https://www.readbyqxmd.com/read/29307780/editorial-commentary-obesity-and-heart-failure-with-preserved-ejection-fraction-a-single-disease-or-two-co-existing-conditions
#13
EDITORIAL
Salvatore Carbone, Ambarish Pandey, Carl J Lavie
No abstract text is available yet for this article.
December 14, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29307549/favorable-effects-of-statins-in-the-treatment-of-heart-failure-with-preserved-ejection-fraction-in-patients-without-ischemic-heart-disease
#14
Tetsuro Tsujimoto, Hiroshi Kajio
BACKGROUND: The effects of statins in patients with heart failure with preserved ejection fraction (HFpEF) remain unclear. This study aimed to assess whether statin therapy is associated with a decreased risk of mortality in patients with HFpEF. METHODS: We used data from the Treatment of Preserved Cardiac Function Heart Failure with an Aldosterone Antagonist (TOPCAT) trial. The primary outcome was all-cause mortality. We analyzed hazard ratios (HRs) for outcomes with 95% confidence intervals (95% CIs) in patients taking statins compared with those not taking statins using multivariable Cox proportional hazard models...
January 4, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29307460/diabetes-mellitus-and-right-ventricular-dysfunction-in-heart-failure-with-preserved-ejection-fraction
#15
Thomas M Gorter, Koen W Streng, Joost P van Melle, Michiel Rienstra, Michael G Dickinson, Carolyn S P Lam, Yoran M Hummel, Adriaan A Voors, Elke S Hoendermis, Dirk J van Veldhuisen
Diabetes mellitus is associated with left-sided myocardial remodeling in heart failure with preserved ejection fraction (HFpEF). Little is known about the impact of diabetes mellitus on right ventricular (RV) function in HFpEF. We therefore studied the relation between diabetes mellitus and RV dysfunction in HFpEF. We have examined patients with HFpEF who underwent simultaneous right-sided cardiac catheterization and echocardiography. RV systolic function was assessed using multiple established echocardiographic parameters, and systolic dysfunction was present if ≥2 parameters were outside the normal range...
December 11, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29306483/left-ventricular-volume-time-relation-in-patients-with-heart-failure-with-preserved-ejection-fraction
#16
Michinari Hieda, Joshua Parker, Tanya Rajabi, Naoki Fujimoto, Paul S Bhella, Anand Prasad, Jeffrey L Hastings, Satyam Sarma, Benjamin D Levine
Elevated left ventricular (LV) filling pressures are commonly reported in patients with heart failure with preserved ejection fraction (HFpEF) and are associated with impaired relaxation in diastole. Relaxation has been assessed by Doppler, but the methods for doing so are indirect and heavily influenced by loading conditions. The aim of this study is to assess LV volume-time relation in patients with HFpEF, when correcting for left atrial driving pressure and chamber size, using cardiac magnetic resonance imaging (cMRI)...
December 11, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29305560/heart-failure-with-preserved-ejection-fraction-controversies-challenges-and-future-directions
#17
REVIEW
Rosita Zakeri, Martin R Cowie
Heart failure with preserved ejection fraction (HFpEF) comprises almost half of the population burden of HF. Because HFpEF likely includes a range of cardiac and non-cardiac abnormalities, typically in elderly patients, obtaining an accurate diagnosis may be challenging, not least due to the existence of multiple HFpEF mimics and a newly identified subset of patients with HFpEF and normal plasma natriuretic peptide concentrations. The lack of effective treatment for these patients represents a major unmet clinical need...
January 5, 2018: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29305104/heart-failure-with-mid-range-ejection-fraction-in-patients-admitted-to-internal-medicine-departments-findings-from-the-rica-registry
#18
María Esther Guisado-Espartero, Prado Salamanca-Bautista, Óscar Aramburu-Bodas, Alicia Conde-Martel, José Luis Arias-Jiménez, Pau Llàcer-Iborra, Melitón Francisco Dávila-Ramos, Yolanda Cabanes-Hernández, Luis Manzano, Manuel Montero-Pérez-Barquero
AIM: To improve the knowledge on characteristics, treatment and prognosis in patients with heart failure (HF) and mid-range ejection fraction discharged after an acute HF episode. METHODS: We prospectively included and followed 2753 patients admitted with HF to Internal Medicine units. Patients were classified according to ejection fraction (EF) into three strata: reduced, EF <40% (HFrEF); mid-range EF 40-49% (HFmrEF); and preserved EF ≥50% (HFpEF). Clinical, echocardiographic, laboratory data and treatment at discharge were recorded and the groups were compared...
January 2, 2018: International Journal of Cardiology
https://www.readbyqxmd.com/read/29305040/obesity-and-heart-failure-with-preserved-ejection-fraction-a-growing-problem
#19
REVIEW
Stuart B Prenner, Paul J Mather
Heart Failure with Preserved Ejection Fraction (HFpEF) is increasing in prevalence due to the aging of the United States population as well as the current obesity epidemic. While obesity is very common in patients with HFpEF, obesity may represent a specific phenotype of HFpEF characterized by unique hemodynamics and structural abnormalities. Obesity induces a systemic inflammatory response that may contribute to myocardial fibrosis and endothelial dysfunction. The most obese patients continue to be excluded from HFpEF clinical trials, and thus ongoing research is needed to determine the role of pharmacologic and interventional approaches in this growing population...
December 14, 2017: Trends in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29301841/teasing-apart-heart-failure-with-preserved-ejection-fraction-phenotypes-with-echocardiographic-imaging-potential-approach-to-research-and-clinical-practice
#20
Edgar Argulian, Y Chandrashekhar, Sanjiv J Shah, Olivier Huttin, Bertram Pitt, Faiez Zannad, Robert O Bonow, Jagat Narula
No abstract text is available yet for this article.
January 5, 2018: Circulation Research
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