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https://www.readbyqxmd.com/read/28230704/muscle-metaboreflex-control-of-sympathetic-activity-in-obstructive-sleep-apnea
#1
Linda M Ueno-Pardi, Renan S Guerra, Thiago T Goya, Rosyvaldo F Silva, Elisangela M Gara, Marta F Lima, Thais S Nobre, Maria J N N Alves, Ivani C Trombetta, Geraldo Lorenzi-Filho
PURPOSE: Previous studies report abnormal muscle metaboreflex control of muscle sympathetic nerve activity (MSNA) in obesity, hypertension, and heart failure. We hypothesized that obstructive sleep apnea (OSA) is associated with augmented metaboreflex control of MSNA. METHODS: Thirty-one sedentary individuals with no comorbidities (age = 52±1 y, body mass index = 28±1 kg/m) without (control, n = 14) and with OSA (n = 17) defined by polysomnography, underwent echocardiography...
February 22, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28229273/effect-of-exercise-on-diastolic-function-in-heart-failure-patients-a-systematic-review-and-meta-analysis
#2
REVIEW
M J Pearson, S F Mungovan, N A Smart
Diastolic dysfunction contributes to the development and progression of heart failure. Conventional echocardiography and tissue Doppler imaging are widely utilised in clinical research providing a number of indices of diastolic function valuable in the diagnosis and prognosis of heart failure patients. The aim of this meta-analysis was to quantify the effect of exercise training on diastolic function in patients with heart failure. Exercise training studies that investigate different indices of diastolic function in patients with heart failure have reported that exercise training improves diastolic function in these patients...
February 23, 2017: Heart Failure Reviews
https://www.readbyqxmd.com/read/28228942/effects-of-renal-denervation-on-vascular-remodelling-in-patients-with-heart-failure-and-preserved-ejection-fraction-a-randomised-control-trial
#3
Hitesh C Patel, Carl Hayward, Jennifer Keegan, Peter D Gatehouse, Ronak Rajani, Rajdeep S Khattar, Raad H Mohiaddin, Stuart D Rosen, Alexander R Lyon, Carlo di Mario
OBJECTIVE: To assess the effect of renal denervation (RDT) on micro- and macro-vascular function in patients with heart failure with preserved ejection fraction (HFpEF). DESIGN: A prospective, randomised, open-controlled trial with blinded end-point analysis. SETTING: A single-centre London teaching hospital. PARTICIPANTS: Twenty-five patients with HFpEF who were recruited into the RDT-PEF trial. MAIN OUTCOME MEASURES: Macro-vascular: 24-h ambulatory pulse pressure, aorta distensibilty (from cardiac magnetic resonance imaging (CMR), aorta pulse wave velocity (CMR), augmentation index (peripheral tonometry) and renal artery blood flow indices (renal MR)...
January 2017: JRSM Cardiovascular Disease
https://www.readbyqxmd.com/read/28228293/cardiorenal-syndrome-type-4-a-study-of-cardiovascular-diseases-in-chronic-kidney-disease
#4
Suresh H, Arun B S, Venkatesh Moger, Mallikarjuna Swamy
INTRODUCTION: The heart and the kidneys are tightly interlinked with each other. So, primary disorder of one of these organs often results in the secondary dysfunction of other. Such interactions play a vital role in the pathogenesis of a clinical entity called cardio-renal syndrome (CRS). CRS type 4 refers to the development of cardiac failure in the patients with CKD. OBJECTIVES: To study the prevalence of various cardiac diseases in the patients with CKD and risk factors for it...
January 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28227426/characterization-of-patient-specific-biventricular-mechanics-in-heart-failure-with-preserved-ejection-fraction-hyperelastic-warping
#5
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/28219923/heart-failure-with-preserved-ejection-fraction-an-opportunity-for-reflection
#6
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/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
#7
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/28219895/impact-of-practice-based-management-of-pa-pressures-in-2000-patients-implanted-with-the-cardiomems-sensor
#8
J Thomas Heywood, Rita Jermyn, David Shavelle, William T Abraham, Arvind Bhimaraj, Kunjan Bhatt, Fareed Sheikh, Eric Eichorn, Sumant Lamba, Rupinder Bharmi, Rahul Agarwal, Charisma Kumar, Lynne W Stevenson
Background -Elevated pulmonary artery (PA) pressures in patients with heart failure (HF) are associated with a high risk for hospitalization and mortality. Recent clinical trial evidence demonstrated a direct relationship between lowering remotely monitored PA pressures and HF hospitalization risk reduction using a novel implantable PA pressure monitoring system (CardioMEMS HF System, St Jude Medical). This study examines PA pressure changes in the first 2,000 US patients implanted in general practice use. Methods -De-identified data from the remote monitoring Merlin...
February 20, 2017: Circulation
https://www.readbyqxmd.com/read/28218632/clinical-case-of-the-month-group-g-streptococcal-bacteremia-secondary-to-a-burn-wound-infection
#9
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/28217978/the-association-of-chronic-kidney-disease-and-microalbuminuria-with-heart-failure-with-preserved-vs-reduced-ejection-fraction
#10
Matthew Nayor, Martin G Larson, Na Wang, Rajalakshmi Santhanakrishnan, Douglas S Lee, Connie W Tsao, Susan Cheng, Emelia J Benjamin, Ramachandran S Vasan, Daniel Levy, Caroline S Fox, Jennifer E Ho
AIMS: Chronic kidney disease (CKD) and microalbuminuria are associated with incident heart failure (HF), but their relative contributions to HF with preserved vs. reduced EF (HFpEF and HFrEF) are unknown. We sought to evaluate the associations of CKD and microalbuminuria with incident HF subtypes in the community-based Framingham Heart Study (FHS). METHODS AND RESULTS: We defined CKD as glomerular filtration rate <60 mL/min/1.73 m(2) , and microalbuminuria as a urine albumin to creatinine ratio (UACR) ≥17 mg/g in men and ≥25 mg/g in women...
February 20, 2017: European Journal of Heart Failure
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/28214509/haplodeficiency-of-activin-receptor-like-kinase-4-alleviates-myocardial-infarction-induced-cardiac-fibrosis-and-preserves-cardiac-function
#14
Yi-He Chen, Qian Wang, Chang-Yi Li, Jian-Wen Hou, Xiao-Meng Chen, Qing Zhou, Jie Chen, Yue-Peng Wang, Yi-Gang Li
Cardiac fibrosis (CF), a repairing process following myocardial infarction (MI), is characterized by abnormal proliferation of cardiac fibroblasts and excessive deposition of extracellular matrix (ECM) resulting in inevitable resultant heart failure. TGF-β (transforming growth factor-β)/ALK5 (Activin receptor-like kinase 5)/Smad2/3/4 pathways have been reported to be involved in the process. Recent studies have implicated both activin and its specific downstream component ALK4 in stimulating fibrosis in non-cardiac organs...
February 15, 2017: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/28214151/association-of-types-of-dyspnea-including-bendopnea-with-cardiopulmonary-disease-in-primary-care
#15
Diana María Martínez Cerón, Maria Luiza Garcia Rosa, Antônio Jose Lagoeiro Jorge, Wolney de Andrade Martins, Evandro Tinoco Mesquita, Monica Di Calafriori Freire, Dayse Mary da Silva Correia, Hye Chung Kang
INTRODUCTION: Dyspnea is the symptom most commonly reported by patients with heart failure (HF) and/or pulmonary disease, the obese and the elderly. Recently 'bendopnea' (shortness of breath when bending forward) has been described in patients with HF. OBJECTIVE: To determine the association of exertional dyspnea, orthopnea, paroxysmal nocturnal dyspnea and bendopnea with chronic disease, especially heart failure, and their phenotypes in primary care. METHODS: This cross-sectional study included 633 individuals aged between 45 and 99 years enrolled in a primary care program in Niteroi, Brazil...
February 14, 2017: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/28212787/application-of-a-pattern-of-incremental-haemodialysis-based-on-residual-renal-function-when-starting-renal-replacement-therapy
#16
José L Merino, Patricia Domínguez, Blanca Bueno, Yésika Amézquita, Beatriz Espejo, Vicente Paraíso
INTRODUCTION: The interest in the preservation of residual kidney function on starting renal replacement therapy (RRT) is very common in techniques such as peritoneal dialysis but less so in haemodialysis (HD). In our centre the pattern of incremental dialysis (2 HD/week) has been an option for a group of patients. Here we share our experience with this regimen from March 2008. MATERIAL AND METHODS: We included incident patients with residual diuresis >1,000ml/24h, clinical stability, absence of oedema, absence of hyperkalaemia >6...
January 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28212137/long-term-prognosis-after-acute-heart-failure-a-differential-impact-of-age-in-different-age-strata
#17
Paulo Bettencourt, Pedro Rodrigues, Helena Moreira, Pedro Marques, Patricia Lourenco
BACKGROUND: Increasing age predicts ominous prognosis in heart failure. Age influences the success of therapeutic approaches and interacts with other prognostic predictors. We aimed to study the impact of age in long-term survival in different age strata. METHODS: Patients were prospectively included in an acute heart failure registry; those with acute coronary syndromes and those with primary valvular disease were excluded. Outcome studied was all-cause mortality...
February 15, 2017: Journal of Cardiovascular Medicine
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/28210847/ethical-considerations-in-the-long-term-ventricular-assist-device-patient
#19
REVIEW
Amanda Cai, Howard J Eisen
PURPOSE OF REVIEW: As the heart failure population continues to age, the need for definitive therapies such as ventricular assist devices (VADs) to extend life and alleviate suffering from end-stage disease directly increases. The goal of this article is to examine the ethical principles of autonomy, beneficence, non-maleficence, and justice within the context of long-term VAD patients. RECENT FINDINGS: Survival rates in VAD-implanted patients have improved in parallel with modernization of device design and surgical technique, reaching that of cardiac transplantation at 1 year post-procedure...
February 16, 2017: Current Heart Failure Reports
https://www.readbyqxmd.com/read/28209765/renin-angiotensin-system-inhibition-worsening-renal-function-and-outcome-in-heart-failure-patients-with-reduced-and-preserved-ejection-fraction-a-meta-analysis-of-published-study-data
#20
Iris E Beldhuis, Koen W Streng, Jozine M Ter Maaten, Adriaan A Voors, Peter van der Meer, Patrick Rossignol, John J V McMurray, Kevin Damman
BACKGROUND: Renin-angiotensin aldosterone system (RAAS) inhibitors significantly improve outcome in heart failure (HF) patients with reduced ejection fraction (HFREF), irrespective of the occurrence of worsening renal function (WRF). However, in HF patients with preserved ejection fraction (HFPEF), RAAS inhibitors have not been shown to improve outcome but are still frequently prescribed. METHODS AND RESULTS: Random effect meta-analysis was performed to investigate the relationship between RAAS inhibitor therapy, WRF in both HF phenotypes, and mortality...
February 2017: Circulation. Heart Failure
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