Results 41 to 50 of about 4,716 (174)

Postanesthetic torsade de pointes in a patient with unrecognized long QT syndrome -A case report- [PDF]

Korean Journal of Anesthesiology, 2011
Torsade de pointes (TdP) is a devastating form of polymorphic ventricular arrhythmia associated with corrected QT (QTc) interval prolongation. TdP usually terminates spontaneously but frequently recurs and may degenerate to ventricular fibrillation.
Jae-Young Lee, Ju-Hyun Lee, Eun-Hye An, Jun-Gol Song, Pyung Hwan Park   +4 more
doaj   +1 more source

The Tpeak – Tend interval as an electrocardiographic risk marker of arrhythmic and mortality outcomes: a systematic review and meta-analysis [PDF]

, 2017
Background: The Tpeak – Tend interval, an electrocardiographic marker reflecting transmural dispersion of repolarization, has been used to predict ventricular tachycardia/fibrillation (VT/VF) and sudden cardiac death (SCD) in different clinical settings.
Bryan P. Yan, Whittaker, P, Sunny Hei Wong, Ciobanu, Ana, Wong, Sunny Hei, Wing Tak Wong, Yan, Gan-Xin, Yan, GX, Chan, YS, Saguner, Ardan M, Georgopoulos, Stamatis, Ali-Hasan-Al-Saegh, Sadeq, Wu, WKK, Ciobanu, A, Gan-Xin Yan, Yat Sun Chan, Ardan M. Saguner, Chan, Yat Sun, Jayaprakash Shenthar, Abhishek C. Sawant, Yan, Bryan P, Tse, Gary, Saguner, Ardan M., Wong, SH, Gary Tse, Tse, G, Vassilios S. Vassiliou, Li, Guangping, Wu, William K. K., Yan, BP, Guangping Li, Konstantinos P. Letsas, Ali-Hasan-Al-Saegh, S, Yunlong Xia, Liu, T, Xia, Yunlong, William K.K. Wu, Li, G, Tong Liu, Shenthar, Jayaprakash, Wu, William K.K., Wong, WT, Vassiliou, V, Mengqi Gong, Bhardwaj, Aishwarya, Letsas, KP, Gong, Mengqi, Vassiliou, Vassilios S., Saguner, AC, Whittaker, Paula, Bhardwaj, A, Sawant, Abhishek C, Sawant, Abhishek C., Shenthar, J, Letsas, Konstantinos P, Wong, Wing-Tak, Whittaker, Paula; id_orcid, Yan, Bryan P., Liu, Tong, Aishwarya Bhardwaj, Wu, William K K, Stamatis Georgopoulos, Xia, Y, Ana Ciobanu, Letsas, Konstantinos P., Vassiliou, Vassilios S, Wong, Wing Tak, Sadeq Ali-Hasan-Al-Saegh, Georgopoulos, S, Yan, Gan Xin, Paula Whittaker, Gong, M, Sawant,, AC   +72 more
core   +1 more source

Acute and Chronic Changes and Predictive Value of Tpeak-Tend for Ventricular Arrhythmia Risk in Cardiac Resynchronization Therapy Patients

Chinese Medical Journal, 2016
Background: Prolongation of the Tpeak-Tend (TpTe) interval as a measurement of transmural dispersion of repolarization (TDR) is an independent risk factor for chronic heart failure mortality.
Cong Xue, Wei Hua, Chi Cai, Li-Gang Ding, Zhi-Min Liu, Xiao-Han Fan, Yun-Zi Zhao, Shu Zhang   +7 more
doaj   +1 more source

The Cardiovascular Effects of a Meal: J-Tpeak and Tpeak -Tend Assessment and Further Insights Into the Physiological Effects. [PDF]

, 2019
Meal intake leads to a significant and prolonged increase in cardiac output to supply the splanchnic vasculature. A meal is associated with sympathetic activation of the cardiovascular system, and food ingestion is correlated with an increase in heart ...
Jörg Täubel, Camm, AJ, Ferber, G, Fernandes, S, Van Langenhoven, L, Van Langenhoven, Leen, Jørgen K. Kanters, A. John Camm, Del Bianco, T, Teresa del Bianco, Graff, Claus, Kanters, JK, Graff, C, Sara Fernandes, Leen Van Langenhoven, Ferber, Georg, Kanters, Jørgen K, Georg Ferber, Camm, A John, Täubel, J, Täubel, Jörg, Dilshat Djumanov, Djumanov, D, Graff, Claus; id_orcid, Djumanov, Dilshat, Kanters, Jørgen K., Fernandes, Sara, Del Bianco, Teresa, Claus Graff   +28 more
core   +1 more source

QT interval and repolarization dispersion changes during the administration of hydroxychloroquine/chloroquine with/without azithromycin in early COVID 19 pandemic: A prospective observational study from two academic hospitals in Indonesia

Journal of Arrhythmia, 2021
Background Hydroxychloroquine/chloroquine (HCQ/CQ) treatment for COVID‐19 was associated with QT interval prolongation and arrhythmia risks. This study aimed to investigate QTc interval and ventricular repolarization dispersion changes, as markers of ...
Rizki A. Gumilang, Siswanto, Vita Y. Anggraeni, Ika Trisnawati, Eko Budiono, Anggoro B. Hartopo   +5 more
doaj   +1 more source

Persistent in vitro nociceptor hyperexcitability and axonal retraction produced by repeated paclitaxel doses

The FEBS Journal, EarlyView.
Repeated paclitaxel exposure causes long‐lasting nociceptor hyperexcitability and axonal retraction in adult sensory neurons. Using a long‐term primary nociceptor culture, we show that hyperexcitability is mediated by sequential upregulation of NaV1.8, TRPV1, TRPA1, and TRPM8 channels.
Angela Lamberti, Victor Moreno Lozano, Asia Fernández‐Carvajal, Antonio Ferrer‐Montiel   +3 more
wiley   +1 more source

Arctic lake trout (Salvelinus namaycush) show evidence of seasonal acclimation of cardiac adrenergic sensitivity but not heat tolerance

Journal of Fish Biology, EarlyView.
Abstract Many Arctic fishes experience prolonged periods of extreme cold and large thermal variation over both rapid and seasonal time scales which challenge critical physiological functions. In the central Canadian Arctic, we caught wild adult lake trout (Salvelinus namaycush) acclimatized to winter and summer temperatures to determine the extent to ...
Emily P. Williams, Les N. Harris, Jean‐Sébastien Moore, Ella K. Middleton, Shira A. Berkelhammer, Ben Speers‐Roesch, Matthew J. H. Gilbert   +6 more
wiley   +1 more source

Evaluation of QT dispersion and T-peak to T-end interval in patients with early-stage sarcoidosis

Revista Portuguesa de Cardiologia, 2017
Introduction and Aim: Sarcoidosis increases inhomogeneity in ventricular repolarization due to the presence of sarcoid granuloma, which significantly correlates with ventricular fibrillation. Various studies have suggested that the interval from the peak
Hacı Ahmet Kasapkara, Ayşegül Şentürk, Emine Bilen, Hüseyin Ayhan, Bilge Duran Karaduman, Zeynep Şeyma Turinay, Murat Can Güney, Tahir Durmaz, Telat Keleş, Engin Bozkurt   +9 more
doaj   +1 more source

Relationship between transmural dispersion of repolarization, Tpeak-Tend interval, and ventricular arrhythmias: reply [PDF]

Europace, 2007
We thank Dr Swenne and his colleagues for their interest in our manuscript.1 Transmural dispersion of repolarization (TDR) in the heart has been linked to a variety of arrhythmic manifestations.2 Three electrophysiologically distinct cell types have been identified in the ventricular myocardium: endocardial, epicardial, and M cells.
L. Santangelo, E. Ammendola, V. Russo, C. Cavallaro, F. Vecchione, S. Garofalo, A. D'Onofrio, R. Calabro   +7 more
openaire   +1 more source

Hyperglycaemia‐induced reactive oxygen species production in cardiac ventricular myocytes differs among mammals

The Journal of Physiology, EarlyView.
Abstract figure legend In rat and human adult ventricular myocytes, acute hyperglyceaemia (Glucose) causes increased glucose uptake (via GLUT) leading to O‐GlcNAcylation of CaMKII at Ser280, such that CaMKII activates NADPH oxidase 2 (NOX2) to increase cytosolic reactive oxygen species (ROS). That perturbs the ROS to Antioxidant (AntiOx) balance.
Shan Lu, Maria J. Baier, Risto‐Pekka Polonen, Zhandi Liao, Jody L. Martin, Kenneth S. Ginsburg, Julian Mustroph, Donald M. Bers   +7 more
wiley   +1 more source