Results 11 to 20 of about 100,632 (325)

Early repolarization [PDF]

Clinical Cardiology, 1999
AbstractEarly repolarization (ER) is an enigma. The purpose of this review is to reemphasize the overall electrocardiographic (ECG) pattern of this normal ST variant which continues to challenge the clinician because of its similarity to the current of injury potential to myocardium or an acute pericarditis.
M, Mehta, A C, Jain, A, Mehta
openaire   +2 more sources

Repolarization Dispersion Is Associated With Diastolic Electromechanical Discoordination in Children With Pulmonary Arterial Hypertension

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2022
Background Electromechanical dyssynchrony is a well described comorbidity in pulmonary arterial hypertension (PAH). ECG‐derived measurements reflective of diastolic dysfunction and electromechanical imaging markers are yet to be investigated.
Michal Schäfer, Benjamin S. Frank, D. Dunbar Ivy, Max B. Mitchell, Kathryn K. Collins, Pei‐Ni Jone, Johannes C. von Alvensleben   +6 more
doaj   +1 more source

Electrocardiographic manifestations of COVID-19: Effect on cardiac activation and repolarization

EClinicalMedicine, 2021
Background: Prolonged QT intervals are reported in patients with COVID-19. Additionally, virus particles in heart tissue and abnormal troponin levels have been reported.
Avni Thakore, James Nguyen, Simcha Pollack, Stefan Muehlbauer, Benjamin Chi, Derek Knight, Bhoomi Mehrotra, Joshua Stern, J. Jane Cao, Charles Lucore, Joseph Levine   +10 more
doaj   +1 more source

Repolarization properties of copper-containing crystals of triglycine sulfate

Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2022
The paper presents the results of the analysis of experimental dielectric hysteresis loops and field dependens of polarization switching of initial and annealed crystals of triglycine sulfate, doped copper (the concentration range (4,2–8,7) 10-3 wt ...
N.N. Bolshakova, N.Yu. Druginina, A.I. Ivanova, D.N. Pavlova, B.B. Ped`ko, E.M. Semenova   +5 more
doaj   +1 more source

M2-Like Tumor-Associated Macrophage-Targeted Codelivery of STAT6 Inhibitor and IKKβ siRNA Induces M2-to-M1 Repolarization for Cancer Immunotherapy with Low Immune Side Effects

ACS Central Science, 2020
Tumor-associated macrophages (TAMs) usually display the tumor-promoting M2 phenotype rather than the tumoricidal M1 phenotype. Thus, M2-to-M1 repolarization of TAMs has emerged as a promising strategy for tumor immunotherapy nowadays.
Hong Xiao, Yu Guo, Bo Li, Xiaoxia Li, Yong Wang, Shisong Han, Du Cheng, X. Shuai   +7 more
semanticscholar   +1 more source

Electrocardiogram abnormalities and prognosis in COVID-19

Frontiers in Cardiovascular Medicine, 2022
BackgroundCOVID-19 is a major pandemic with potential cardiovascular complications. Few studies have focused on electrocardiogram (ECG) modifications in COVID-19 patients.Method and resultsWe reviewed from our database all patients referred to our ...
Gabriel Chevrot, Marie Hauguel-Moreau, Marie Hauguel-Moreau, Marion Pépin, Marion Pépin, Antoine Vieillard-Baron, Antoine Vieillard-Baron, Antoine Vieillard-Baron, Anne-Sophie Lot, Mounir Ouadahi, Hélène Hergault, Vincent Aïdan, Ségolène Greffe, Adrien Costantini, Olivier Dubourg, Olivier Dubourg, Sébastien Beaune, Sébastien Beaune, Nicolas Mansencal, Nicolas Mansencal   +19 more
doaj   +1 more source

Electrical and Contractile Properties of the Heart Ventricle in Response to Ambient Temperature Changes in Frog Rana temporaria [PDF]

International Journal of Biomedicine, 2017
The aim of the study was to investigate the dynamics of change in the intraventricular pressure, depolarization and repolarization processes on the ventricular epicardium (VE) in Rana temporaria in response to a rise in ambient temperature. By methods of
Natalya A. Kibler, Vladimir P. Nuzhny, Valentina I. Prosheva   +2 more
doaj   +1 more source

Abnormal Cardiac Repolarization in Thyroid Diseases: Results of an Observational Study

Frontiers in Cardiovascular Medicine, 2021
Background: The relationship between thyroid function and cardiac disease is complex. Both hypothyroidism and thyrotoxicosis can predispose to ventricular arrhythmia and other major adverse cardiovascular events (MACE), so that a U-shaped relationship ...
Assem Aweimer, Fabian Schiedat, Dominik Schöne, Gabi Landgrafe-Mende, Harilaos Bogossian, Andreas Mügge, Andreas Mügge, Polykarpos C. Patsalis, Michael Gotzmann, Ibrahim Akin, Ibrahim El-Battrawy, Johannes W. Dietrich, Johannes W. Dietrich, Johannes W. Dietrich, Johannes W. Dietrich   +14 more
doaj   +1 more source

Refining repolarization reserve [PDF]

Heart Rhythm, 2011
A body of cellular and molecular studies over the past 15 years has demonstrated that the fundamental molecular lesion in the drug-induced long QT syndrome (LQTS) is block of the repolarizing potassium current IKr, the “rapid” component of the repolarizing potassium current that was initially termed IK.1,2 Further, decreased IKr due to KCNH2 mutations ...
Dan M, Roden, Robert L, Abraham
openaire   +2 more sources

The Effect of Emotional Valence on Ventricular Repolarization Dynamics Is Mediated by Heart Rate Variability: A Study of QT Variability and Music-Induced Emotions

Frontiers in Physiology, 2019
BackgroundEmotions can affect cardiac activity, but their impact on ventricular repolarization variability, an important parameter providing information about cardiac risk and autonomic nervous system activity, is unknown. The beat-to-beat variability of
Michele Orini, Michele Orini, Faez Al-Amodi, Stefan Koelsch, Raquel Bailón, Raquel Bailón   +5 more
doaj   +1 more source