Results 131 to 140 of about 79,145 (303)

The Atrioventricular Coupling in Heart Failure: Pathophysiological and Therapeutic Aspects

Reviews in Cardiovascular Medicine
For a long time, the study of heart failure focused on single heart chamber disease. There is, instead, growing attention on the interplay between the atria and the ventricles during the cardiac cycle and on the consequences of an altered chamber ...
Vito Di Terlizzi, Roberta Barone, Nicola Di Nunno, Gianmarco Alcidi, Natale Daniele Brunetti, Massimo Iacoviello   +5 more
doaj   +1 more source

Stable Atrial Sensing on Long-Term Follow Up of VDD Pacemakers [PDF]

, 2006
Background: The hemodynamic advantages of maintaining AV synchrony through AV synchronous pacing are widely known as compared to single chamber pacing.
Shah, Ashok, Aithal, Jairam, Narula, Dhiraj, Kerkar, Prafulla   +3 more
core   +1 more source

Age and gender effects on echocardiographic and histopathological cardiac phenotypes in healthy adult mice

Animal Models and Experimental Medicine, EarlyView.
This study investigated the impact of age and sex on cardiac phenotypes in healthy adult C57BL/6J mice using echocardiography and histopathological analyses. Findings revealed that female mice demonstrated more pronounced global cardiac chamber dilation during aging.
Shuang Wen, Xijia Shao, Xiulin Zhang, Ningning Zhang, Xiao Chen, Guangxin Yue, Jiangping Song   +6 more
wiley   +1 more source

Atrial Fibrillation and Hyperthyroidism [PDF]

, 2005
Atrial fibrillation occurs in 10 – 15% of patients with hyperthyroidism. Low serum thyrotropin concentration is an independent risk factor for atrial fibrillation. Thyroid hormone contributes to arrythmogenic activity by altering the electrophysiological
Francis, Johnson, Jayaprasad, N
core  

The characteristics of collagen‐induced rheumatoid arthritis in macaques and the changes of heart

Animal Models and Experimental Medicine, EarlyView.
The disease progression in CIA macaques was categorized into three stages: IIR (days 14–34): The indicators related to rheumatoid arthritis and the levels of immunoglobulin were all elevated. There was a small amount of joint effusion, edema and mild synovial hyperplasia. No joint swelling was observed by naked eye.
Lei Zhang, Haifeng Jiang, Zhen Xu, Tingyu Dong, Xiaoyi Liu, Shangxue Yan, Jiajie Kuai, Yan Chang, Wei Wei   +8 more
wiley   +1 more source

Comparison of Cardioprotective Potential of Cannabidiol and β-Adrenergic Stimulation Against Hypoxia/Reoxygenation Injury in Rat Atria and Ventricular Papillary Muscles

Pharmaceuticals
Background: Hypoxia is one of the most significant pathogenic factors in cardiovascular diseases. Preclinical studies suggest that nonpsychoactive cannabidiol (CBD) and β-adrenoceptor stimulation might possess cardioprotective potential against ischemia ...
Anna Pędzińska-Betiuk, Ulrich Gergs, Jolanta Weresa, Patryk Remiszewski, Ewa Harasim-Symbor, Barbara Malinowska   +5 more
doaj   +1 more source

Functional and Structural Differences in Atria Versus Ventricles in Teleost Hearts

, 2012
Across vertebrates, the fish heart is structurally relatively simple. The heart of teleosts is unique in structure, composed of four chambers in series: venous sinus, atrium, ventricle and bulbus arteriosus. The two chambers acting as pumps are the atrium and ventricle, a simplified ver‐ sion of that seen in tetrapods.
Genge, Christine, Hove-Madsen, Leif, Tibbits, Glen F.   +2 more
openaire   +3 more sources

Multi‐omics data mining combined with experimental validation reveals ferroptosis‐ and autophagy‐associated hub genes as diagnostic candidates and immune modulators in atherosclerosis

Animal Models and Experimental Medicine, EarlyView.
Using the GSE225650 dataset, we performed differential expression gene (DEG) screening, Weighted Gene Coexpression Network Analysis (WGCNA), and immune infiltration profiling on atherosclerosis (AS) samples, yielding 104 shared candidate genes. Subsequently, these 104 candidate genes were intersected with ferroptosis‑ and autophagy‑related gene sets ...
Xinou Zheng, Jinling Zheng, Xuezhuang Li, Hua Chen, Li Zhang, Yuqiong Zhao, Yahao Ling   +6 more
wiley   +1 more source

Multimorbidity and Associations with Cognition and Alzheimer's Disease Biomarkers

Annals of Neurology, EarlyView.
Objective Multimorbidity, the coexistence of 2 or more chronic conditions, has been linked to cognitive aging and Alzheimer's disease (AD) and AD‐related dementias, yet the mechanisms remain unclear. We aimed to examine the associations of multimorbidity with cognition and biomarkers across multiple mechanistic pathways.
Xiaqing Jiang, Sid E. O'Bryant, Robert A. Rissman, Leigh A. Johnson, Meredith N. Braskie, Kristine Yaffe, the HABS‐HD Study Team, Sid E. O'Bryant, Kristine Yaffe, Arthur Toga, Robert Rissman, Leigh Johnson, Meredith Braskie, Kevin King, James R. Hall, Melissa Petersen, Raymond Palmer, Robert Barber, Yonggang Shi, Fan Zhang, Rajesh Nandy, Roderick McColl, David Mason, Bradley Christian, Nicole Phillips, Stephanie Large, Joe Lee, Badri Vardarajan, Monica Rivera Mindt, Amrita Cheema, Lisa Barnes, Mark Mapstone, Annie Cohen, Amy Kind, Ozioma Okonkwo, Raul Vintimilla, Zhengyang Zhou, Michael Donohue, Rema Raman, Matthew Borzage, Michelle Mielke, Beau Ances, Ganesh Babulal, Jorge Llibre‐Guerra, Carl Hill, Rocky Vig   +45 more
wiley   +1 more source

Resection of Left Atrial Myxoma in a Patient with Retrosternal Gastric Tube: a Case Report

Brazilian Journal of Cardiovascular Surgery
The median sternotomy remains the standard approach in cardiovascular surgery but, in some conditions, it can be considered difficult to perform, especially in patients with history of esophagectomy. This case report describes a successful resection of a
Pablo Maria Alberto Pomerantzeff, Elinthon Tavares Veronese, Fabrício José Dinato, Fabio Biscegli Jatene   +3 more
doaj   +1 more source