Results 21 to 30 of about 57,164 (287)

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

Analysis of 24-h Rhythm in Ventricular Repolarization Identifies QT Diurnality As a Novel Clinical Parameter Associated with Previous Ventricular Arrhythmias in Heart Failure Patients

Frontiers in Physiology, 2017
Introduction: Cardiac repolarization abnormalities are among the major causes of ventricular arrhythmias and sudden cardiac death. In humans, cardiac repolarization duration has a 24-h rhythm.
Bastiaan C. Du Pre, Bastiaan C. Du Pre, Linda W. Van Laake, Matthias Meine, Jeroen F. Van der Heijden, Pieter A. Doevendans, Marc A. Vos, Toon A. B. Van Veen   +7 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

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

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

Targeted Repolarization of Tumor‐Associated Macrophages via Imidazoquinoline‐Linked Nanobodies

Advanced Science, 2021
Tumor‐associated macrophages (TAMs) promote the immune suppressive microenvironment inside tumors and are, therefore, considered as a promising target for the next generation of cancer immunotherapies.
Evangelia Bolli, Maximilian Scherger, Sana M. Arnouk, Ana Rita Pombo Antunes, David Straßburger, Moritz Urschbach, Judith Stickdorn, Karen De Vlaminck, Kiavash Movahedi, Hans Joachim Räder, Sophie Hernot, Pol Besenius, Jo A. Van Ginderachter, Lutz Nuhn   +13 more
doaj   +1 more source

Cardiovascular regulation and vascular structure in prehypertension and coronary heart disease [PDF]

, 2009
The aim of this thesis was to characterize vascular structure and different aspects of cardiovascular regulation in otherwise healthy subjects with slightly elevated blood pressure and compare to healthy subjects with normotension and also investigate ...
Myredal, Anna
core   +1 more source

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

Arrhythmogenic Mechanisms in Hypokalaemia: Insights From Pre-clinical Models

Frontiers in Cardiovascular Medicine, 2021
Potassium is the predominant intracellular cation, with its extracellular concentrations maintained between 3. 5 and 5 mM. Among the different potassium disorders, hypokalaemia is a common clinical condition that increases the risk of life-threatening ...
Gary Tse, Gary Tse, Ka Hou Christien Li, Chloe Kwong Yee Cheung, Konstantinos P. Letsas, Aishwarya Bhardwaj, Abhishek C. Sawant, Tong Liu, Gan-Xin Yan, Henggui Zhang, Kamalan Jeevaratnam, Nazish Sayed, Nazish Sayed, Nazish Sayed, Shuk Han Cheng, Shuk Han Cheng, Shuk Han Cheng, Wing Tak Wong   +17 more
doaj   +1 more source