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Exercise AND heart failure

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https://www.readbyqxmd.com/read/28820609/cardio-pulmonary-interactions-physiologic-basis-and-clinical-applications
#1
Michael R Pinsky
The hemodynamic effects of ventilation can be grouped into three concepts: 1) spontaneous ventilation is exercise; 2) changes in lung volume alter autonomic tone, pulmonary vascular resistance, and can compress the heart in the cardiac fossa; 3) spontaneous inspiratory efforts decrease intrathoracic pressure (ITP) increasing venous return and impeding left ventricular (LV) ejection; whereas positive pressure ventilation decreases venous return and unloads LV ejection. Spontaneous inspiratory efforts may induce acute LV failure and cardiogenic pulmonary edema...
August 18, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28819094/atrioventricular-conduction-delay-predicts-impaired-exercise-capacity-in-patients-with-heart-failure-with-reduced-ejection-fraction
#2
Jakub Stępniewski, Grzegorz Kopeć, Wojciech Magoń, Piotr Podolec
BACKGROUND Atrioventricular conduction delay (AVCD) impairs left ventricular (LV) filling and consequently leads to a reduction of cardiac output. We hypothesized that in patients with severely depressed LV function and coexisting intraventricular conduction disturbances (IVCD), AVCD can affect exercise performance. Therefore, we evaluated the association of AVCD and exercise capacity in patients with heart failure (HFREF) and coexisting IVCD. MATERIAL AND METHODS We included patients with stable, chronic HFREF, LVEF <35%, sinus rhythm, and QRS ≥120 ms...
August 18, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28818533/the-association-between-bouted-and-non-bouted-physical-activity-on-retinopathy-prevalence
#3
Emily Frith, Paul D Loprinzi
OBJECTIVE: We evaluated the specific differential association between non-bouted, lifestyle physical activities (vs. structured exercise; i.e., bouted physical activity) on retinopathy prevalence among a national sample of the broader U.S. adult population. METHODS: Data from the 2005-2006 National Health and Nutrition Examination Survey (NHANES) was used to identify 1501 adults, between 40 and 85years. Bouted and non-bouted physical activities were assessed using objective accelerometer monitoring...
August 14, 2017: European Journal of Internal Medicine
https://www.readbyqxmd.com/read/28817856/back-to-basics-the-effect-of-healthy-diet-and-exercise-on-chronic-disease-management
#4
Robert L Allison
INTRODUCTION: The increase in obesity rates in the U.S. and other less developed industrial countries have led to a worldwide epidemic of chronic disease states. Increased obesity rates are implicated in the treatment failures for illnesses such as coronary artery disease, diabetes, heart failure, hypertension and cancer. Effective prevention of obesity through diet and exercise contributes to the successful medical management of multiple chronic disease states. OBJECTIVE: Review the last 10 years of literature (2006-2016) on the effects of diet and exercise as they relate to the prevention of chronic disease...
2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/28814664/pulmonary-arterial-hypertension-treatment-with-carvedilol-for-heart-failure-a-randomized-controlled-trial
#5
Samar Farha, Didem Saygin, Margaret M Park, Hoi I Cheong, Kewal Asosingh, Suzy Aa Comhair, Olivia R Stephens, Emir C Roach, Jacqueline Sharp, Kristin B Highland, Frank P DiFilippo, Donald R Neumann, W H Wilson Tang, Serpil C Erzurum
BACKGROUND: Right-sided heart failure is the leading cause of death in pulmonary arterial hypertension (PAH). Similar to left heart failure, sympathetic overactivation and β-adrenoreceptor (βAR) abnormalities are found in PAH. Based on successful therapy of left heart failure with β-blockade, the safety and benefits of the nonselective β-blocker/vasodilator carvedilol were evaluated in PAH. METHODS: PAH Treatment with Carvedilol for Heart Failure (PAHTCH) is a single-center, double-blind, randomized, controlled trial...
August 17, 2017: JCI Insight
https://www.readbyqxmd.com/read/28814264/left-ventricular-contractile-reserve-by-stress-echocardiography-as-a-predictor-of-response-to-cardiac-resynchronization-therapy-in-heart-failure-a-systematic-review-and-meta-analysis
#6
Quirino Ciampi, Clara Carpeggiani, Claudio Michelassi, Bruno Villari, Eugenio Picano
BACKGROUND: The presence of left ventricular contractile reserve (LVCR) during stress echo (SE) may provide favorable response to cardiac resynchronization therapy (CRT) in heart failure patients. The aim of the study was to perform a meta-analysis of available SE data in this set of patients. METHODS: From a Pubmed and Advance Google Scholar database web based search scan up to December 2016, we initially identified 5906 records. From this initial set, we removed that did not include SE and duplicate studies...
August 16, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28812262/systolic-dysfunction-in-infarcted-mice-does-not-necessarily-lead-to-heart-failure-need-to-refine-preclinical-models
#7
María Villalba-Orero, Marina López-Olañeta, Pablo García-Pavía, Enrique Lara-Pezzi
Heart failure (HF) is a major cause of death and hospitalization worldwide. Despite advances in reducing mortality, prognosis remains poor and prevalence has reached epidemic proportions. The limitations of available preclinical models represent a major hurdle in the development of new therapies. Myocardial infarction (MI) is a main cause of HF in humans, and mouse models of MI are often used to study HF mechanisms and experimental treatments. We investigated whether MI in mice constitutes an appropriate model of HF...
August 15, 2017: Journal of Cardiovascular Translational Research
https://www.readbyqxmd.com/read/28806046/electrolytes-sodium-disorders
#8
Michael M Braun, Megan Mahowald
Sodium disorders (ie, hyponatremia, hypernatremia) are common electrolyte disturbances in clinical medicine and are associated with increased rates of morbidity and mortality. Etiologies of hyponatremia are classified into four categories. The first is pseudohyponatremia, in which the sodium level is low due to hyperproteinemia, hyperlipidemia, or hyperglycemia. The other three categories are based on overall patient fluid status and include hypovolemic (commonly due to fluid loss), hypervolemic (commonly due to fluid retention from heart failure, cirrhosis, or renal failure), and euvolemic (most often because of syndrome of inappropriate secretion of antidiuretic hormone)...
August 2017: FP Essentials
https://www.readbyqxmd.com/read/28805967/prognostic-value-of-exercise-capacity-among-men-undergoing-pharmacologic-treatment-for-erectile-dysfunction-the-fit-project
#9
Robert V Same, Mahmoud Al Rifai, David I Feldman, Kevin L Billups, Clinton A Brawner, Zeina A Dardari, Jonathan K Ehrman, Steven J Keteyian, Mouaz H Al-Mallah, Michael J Blaha
BACKGROUND: Vascular erectile dysfunction (ED) has been identified as a potentially useful risk factor for predicting future cardiovascular events, particularly in younger men. Because these men typically score more favorably on traditional cardiovascular disease risk assessment tools, there exists a gap in knowledge for how to most appropriately identify those men who would benefit from more aggressive treatments. To date, no studies have examined the impact of fitness on cardiovascular outcomes in men with ED...
August 14, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28802909/variable-prognostic-value-of-blood-pressure-response-to-exercise
#10
Yuko Kato, Shinya Suzuki, Tokuhisa Uejima, Hiroaki Semba, Takeshi Yamashita
AIM: The aim of this study was to evaluate the impact of patient background including exercise capacity on the relationship between the blood pressure (BP) response to exercise and prognosis in patients visiting a cardiovascular hospital. METHODS: A total of 2134 patients who were referred to our hospital underwent symptom-limited maximal cardiopulmonary exercise testing, and were followed through medical records and mail. The BP response to exercise was defined as the difference between peak and rest systolic BP...
August 9, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28802509/value-of-strain-imaging-and-maximal-oxygen-consumption-in-patients-with-hypertrophic-cardiomyopathy
#11
Kegan J Moneghetti, Davide Stolfo, Jeffrey W Christle, Yukari Kobayashi, Gherardo Finocchiaro, Gianfranco Sinagra, Jonathan Myers, Euan A Ashley, Francois Haddad, Matthew T Wheeler
Longitudinal strain (LS) has been shown to be predictive of outcome in hypertrophic cardiomyopathy (HC). Percent predicted peak oxygen uptake (ppVO2), among other cardiopulmonary exercise testing (CPX) metrics, is a strong predictor of prognosis in HC. However, there has been limited investigation into the combination of LS and CPX metrics. This study sought to determine how LS and parameters of exercise performance contribute to prognosis in HC. One hundred and thirty-one consecutive patients with HC who underwent CPX and stress echocardiography were included...
July 17, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28801415/randomised-feasibility-trial-into-the-effects-of-low-frequency-electrical-muscle-stimulation-in-advanced-heart-failure-patients
#12
Stuart Ennis, Gordon McGregor, Thomas Hamborg, Helen Jones, Robert Shave, Sally J Singh, Prithwish Banerjee
OBJECTIVES: Low-frequency electrical muscle stimulation (LF-EMS) may have the potential to reduce breathlessness and increase exercise capacity in the chronic heart failure population who struggle to adhere to conventional exercise. The study's aim was to establish if a randomised controlled trial of LF-EMS was feasible. DESIGN AND SETTING: Double blind (participants, outcome assessors), randomised study in a secondary care outpatient cardiac rehabilitation programme...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28801407/the-boundaries-of-mild-chronic-obstructive-pulmonary-disease-copd-design-of-the-searching-clinical-copd-onset-soon-study
#13
Gonzalo Labarca, Andrea Bustamante, Gonzalo Valdivia, Rodrigo Díaz, Álvaro Huete, Paul Mac Nab, Laura Mendoza, Jaime Leppe, Carmen Lisboa, Fernando Saldías, Orlando Díaz
INTRODUCTION: Clinical onset of chronic obstructive pulmonary disease (COPD) is the point at which the disease is first identifiable by physicians. It is a poorly defined stage which seems to include both mild spirometric and non-spirometric disease, and could be described as early grade COPD, for practical purposes. While dyspnoea; chronic bronchitis and CT imaging evidence of emphysema and airway disease may be present very early, the lone significance of dyspnoea, the most relevant symptom in COPD in identifying these individuals, has been scarcely assessed...
August 11, 2017: BMJ Open
https://www.readbyqxmd.com/read/28801055/therapy-with-mesenchymal-stromal-cells-or-conditioned-medium-reverse-cardiac-alterations-in-a-high-fat-diet-induced-obesity-model
#14
P S Daltro, B C Barreto, P G Silva, P Chenaud Neto, P H F Sousa Filho, D Santana Neta, G B Carvalho, D N Silva, B D Paredes, A C de Alcantara, L A R Freitas, R D Couto, R R Santos, B S F Souza, M B P Soares, S G Macambira
BACKGROUND: Obesity is associated with numerous cardiac complications, including arrhythmias, cardiac fibrosis, remodeling and heart failure. Here we evaluated the therapeutic potential of mesenchymal stromal cells (MSCs) and their conditioned medium (CM) to treat cardiac complications in a mouse model of high-fat diet (HFD)-induced obesity. METHODS: After obesity induction and HFD withdrawal, obese mice were treated with MSCs, CM or vehicle. Cardiac function was assessed using electrocardiography, echocardiography and treadmill test...
August 8, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28793058/inflammation-and-oxidative-stress-in-heart-failure-effects-of-exercise-intensity-and-duration
#15
G A Ribeiro-Samora, L A Rabelo, A C C Ferreira, M Favero, G S Guedes, L S M Pereira, V F Parreira, R R Britto
Although acute exercise is apparently pro-inflammatory and increases oxidative stress, it can promote the necessary stress stimulus to train chronic adaptations in patients with chronic heart failure (CHF). This study aimed to compare the effects of exercise intensity and duration on the inflammatory markers soluble tumor necrosis factor receptor (sTNFR1) and interleukin-6 (IL-6), and on oxidative stress [malondialdehyde (MDA) and antioxidant enzymes: catalase (CAT) and superoxide dismutase (SOD)] in individuals with CHF...
August 7, 2017: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/28782491/the-impact-of-cardiovascular-diseases-on-the-cardiovascular-regulation-during-exercise-in-humans-studies-on-the-metaboreflex-elicited-by-the-post-exercise-muscle-ischemia-method
#16
Antonio Crisafulli
Hemodynamics during dynamic exercise is finely regulated by some neural mechanisms. One of these mechanisms is the metabolic part of the exercise pressor reflex, i.e. the muscle metaboreflex. Hemodynamic response during the metaboreflex is characterised by the recruitment of the reserves in cardiac inotropism, pre-load, after-load and chronotropism. If one of these reserves is exhausted, then the cardiovascular response is achieved by recruiting one of the other reserves, thereby indicating a remarkable plasticity of the control of circulation...
August 4, 2017: Current Cardiology Reviews
https://www.readbyqxmd.com/read/28782380/interval-training-early-after-heart-failure-decompensation-is-safe-and-improves-exercise-tolerance-and-quality-of-life-in-selected-patients
#17
Artem Doletsky, Denis Andreev, Ilya Giverts, Alexey Svet, Anna Brand, Maria Kuklina, Vsevolod Sedov, Oxana Dikur, Abram Syrkin, Hugo Saner
Aims To evaluate safety and efficacy of moderate intensity interval exercise training early after heart failure decompensation on exercise tolerance and health-related quality of life (HRQoL). Methods and results This is a prospective randomized controlled study. We screened 234 consecutive patients admitted with decompensated heart failure; 46 patients (42 men/4 women; 61 ± 12 years of age) were randomized to a moderate intensity aerobic interval training ( n = 24) or to a control group ( n = 22)...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28780660/update-on-valvular-heart-disease-in-pregnancy
#18
REVIEW
Lucy M Safi, Sarah V Tsiaras
Valvular heart disease in women of childbearing age poses an increased risk of adverse maternal and fetal outcomes, and management in pregnancy can be challenging. Ideally, patients with suspected valvular disease should have preconception counseling by a multidisciplinary team including cardiologists with expertise in pregnancy and a maternal-fetal medicine specialist. Preconception planning should include a cardiac assessment of maternal risk, determination of frequency of surveillance, and a cardiovascular management plan during delivery...
September 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28780577/drug-treatment-effects-on-outcomes-in-heart-failure-with-preserved-ejection-fraction-a-systematic-review-and-meta-analysis
#19
Sean Lee Zheng, Fiona T Chan, Adam A Nabeebaccus, Ajay M Shah, Theresa McDonagh, Darlington O Okonko, Salma Ayis
BACKGROUND: Clinical drug trials in patients with heart failure and preserved ejection fraction have failed to demonstrate improvements in mortality. METHODS: We systematically searched Medline, Embase and the Cochrane Central Register of Controlled Trials for randomised controlled trials (RCT) assessing pharmacological treatments in patients with heart failure with left ventricular (LV) ejection fraction≥40% from January 1996 to May 2016. The primary efficacy outcome was all-cause mortality...
August 5, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/28772053/heart-failure-awareness-survey-in-germany-general-knowledge-on-heart-failure-remains-poor
#20
Christine Zelenak, Sara Radenovic, Lindy Musial-Bright, Elvis Tahirovic, Mesud Sacirovic, Chong-Bin Lee, Diana Jahandar-Lashki, Simone Inkrot, Tobias Daniel Trippel, Andreas Busjahn, Djawid Hashemi, Rolf Wachter, Sabine Pankuweit, Stefan Störk, Burkert Pieske, Frank Edelmann, Hans-Dirk Düngen
AIMS: Previous studies demonstrated poor public awareness of heart failure (HF) compared with myocardial infarction and stroke. With respect to several activities to improve HF awareness in recent years, we present data on the development of HF awareness and information sources in Germany over 8 years. METHODS AND RESULTS: In 2007, 2012, and 2015, respectively, 2531, 359, and 171 respondents answered questions about causes, presentation, prognosis, and treatment of HF from a survey developed by the German Competence Network HF...
August 2017: ESC Heart Failure
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