Results 31 to 40 of about 43,223 (162)

Temporal variability of T‐wave morphology and risk of sudden cardiac death in patients with coronary artery disease

Annals of Noninvasive Electrocardiology, 2021
Background The possible relationship between temporal variability of electrocardiographic spatial heterogeneity of repolarization and the risk of sudden cardiac death (SCD) in patients with coronary artery disease (CAD) is not completely understood ...
Janne T. Rahola, Antti M. Kiviniemi, Olavi H. Ukkola, Mikko P. Tulppo, M. Juhani Junttila, Heikki V. Huikuri, Tuomas V. Kenttä, Juha S. Perkiömäki   +7 more
doaj   +1 more source

Early screening of hypertension and cardiac dysautonomia in each hypertensive is needed-inference from a study of QTc interval in Gujarat, India

International Journal of Preventive Medicine, 2018
Background: Hypertension (HTN) is linked to cardiac dysautonomia that can end up as life-threatening arrhythmias. The same can be screened by simple electrocardiogram (ECG)-based QTc (QT corrected for heart rate) interval which indicates repolarization ...
Jayesh Dalpatbhai Solanki, Bhakti P Gadhavi, Amit H Makwana, Hemant B Mehta, Chinmay J Shah, Pradnya A Gokhale   +5 more
doaj   +1 more source

Temporal Variability in Electrocardiographic Indices in Subjects With Brugada Patterns

Frontiers in Physiology, 2020
IntroductionPatients with Brugada electrocardiographic (ECG) patterns have differing levels of arrhythmic risk. We hypothesized that temporal variations in certain ECG markers may provide additional value for risk stratification.
Sharen Lee, Jiandong Zhou, Tong Liu, Konstantinos P. Letsas, Sandeep S. Hothi, Vassilios S. Vassiliou, Guoliang Li, Adrian Baranchuk, Raymond W. Sy, Raymond W. Sy, Dong Chang, Qingpeng Zhang, Gary Tse, Gary Tse   +13 more
doaj   +1 more source

Contribution of Depolarization and Repolarization Changes to J-Wave Generation and Ventricular Fibrillation in Ischemia

Frontiers in Physiology, 2020
Background: Activation delay in ischemic myocardium has been found to contribute to J-wave appearance and to predict ventricular fibrillation (VF) in experimental myocardial infarction.
Alena S. Tsvetkova, Jan E. Azarov, Jan E. Azarov, Jan E. Azarov, Olesya G. Bernikova, Alexey O. Ovechkin, Alexey O. Ovechkin, Marina A. Vaykshnorayte, Marina M. Demidova, Marina M. Demidova, Pyotr G. Platonov, Pyotr G. Platonov   +11 more
doaj   +1 more source

T‐wave heterogeneity in standard resting 12‐lead ECGs is associated with 90‐day cardiac mortality in women following emergency department admission: A nested case–control study

Annals of Noninvasive Electrocardiology, 2021
Background We investigated whether T‐wave heterogeneity (TWH) can identify patients who are at risk for near‐term cardiac mortality. Methods A nested case–control analysis was performed in the 888 patients admitted to the Emergency Department (ED) of our
Felipe R. Monteiro, Ana B. Rabelo Evangelista, Bruce D. Nearing, Sofia A. Medeiros, Fernanda Tessarolo Silva, Giovanna C. Pedreira, Edward Ullman, Ernest V. Gervino, Richard L. Verrier   +8 more
doaj   +1 more source

Acetylcholine Reduces L-Type Calcium Current without Major Changes in Repolarization of Canine and Human Purkinje and Ventricular Tissue

Biomedicines, 2022
Vagal nerve stimulation (VNS) holds a strong basis as a potentially effective treatment modality for chronic heart failure, which explains why a multicenter VNS study in heart failure with reduced ejection fraction is ongoing.
Arie O. Verkerk, Illés J. Doszpod, Isabella Mengarelli, Tibor Magyar, Alexandra Polyák, Bence Pászti, Igor R. Efimov, Ronald Wilders, István Koncz   +8 more
doaj   +1 more source

Understanding repolarization in the intracardiac unipolar electrogram: A long-lasting controversy revisited

Frontiers in Physiology, 2023
Background: The optimal way to determine repolarization time (RT) from the intracardiac unipolar electrogram (UEG) has been a topic of debate for decades.
Job Stoks, Job Stoks, Job Stoks, Laura R. Bear, Johan Vijgen, Paul Dendale, Ralf Peeters, Paul G. A. Volders, Matthijs J. M. Cluitmans   +8 more
doaj   +1 more source

Manifested U‐Waves Prior to Seizure Attacks in a Patient Who Had Remote Subarachnoid Hemorrhage: A Case Report

Annals of Noninvasive Electrocardiology
Sudden unexpected death in epilepsy (SUDEP) refers to unpredictable demise of a person following a seizure. Electroencephalograms can directly measure electrical activity in the brain; however, it cannot predict when seizures will occur.
Nao Kaneko, Masao Watanabe, Shusuke Mori, Isik Turker, Ken Okamoto, Takao Urabe, Tomohiko Ai   +6 more
doaj   +1 more source

The Effects of Pediatric Acute Lymphoblastic Leukemia Treatment on Cardiac Repolarization

Children
Background: In recent years, cardiac dysfunction in childhood cancer survivors has become an important issue. Studies are focusing on identifying means for the early identification of patients at risk.
Diana R. Lazar, Simona Cainap, Florin Leontin Lazar, Dana Maniu, Cristina Blag, Madalina Bota, Marius C. Colceriu, Mihnea Zdrenghea   +7 more
doaj   +1 more source

Comparison of Electrocardiographic Repolarization Patterns between Hypogonad Males and Normal Subjects

Annals of Noninvasive Electrocardiology, 2003
Background: There is a significant difference in repolarization on the surface ECG between men and women. The effect of testosterone on repolarization of myocardium may provide a basis for the physiological and pathophysiological importance of these ...
Ata Kirilmaz, Erol Bolu, Fethi Kilicaslan, Kursad Erinc, Mehmet Uzun, Ersoy Isik, Metin Ozata, Caglayan Ozdemir, Ertan Demirtas   +8 more
doaj   +1 more source