Results 31 to 40 of about 53,134 (244)

Use of QT intervals for a more accurate diagnose of syncope and evaluation of syncope severity. [PDF]

, 2014
BACKGROUND: This study aimed to evaluate the use of QT intervals, their diagnostic predictive value in patients with syncope and their relationship with syncope severity.
BUTTA', Carmelo, CANINO, Baldassare, CASUCCIO, Alessandra, DI RAIMONDO, Domenico, GIARRUSSO, Lucia, Licata, G, Lo Vecchio, S, Miceli, G, PINTO, Antonio, TUTTOLOMONDO, Antonino   +9 more
core   +1 more source

Long QT syndrome and torsades de pointes complicating mitral valve replacement

Indian Heart Journal, 2016
Severe QT interval prolongation >500 ms occurs in one quarter of cardiac surgical patients in the perioperative period while moderate prolongation occurs in most of them. Prolonged QT interval may be associated with torsades de pointes and lead to sudden
Shegu Gilbert, Devender Singh, M. Lawrance Jesuraj   +2 more
doaj   +1 more source

QT PRODACT: In Vivo QT Assay With a Conscious Monkey for Assessment of the Potential for Drug-Induced QT Interval Prolongation

Journal of Pharmacological Sciences, 2005
In safety pharmacology studies, the effects on the QT interval of electrocardiograms are routinely assessed using a telemetry system in cynomolgus monkeys. However, there is a lack of integrated databases concerning in vivo QT assays in conscious monkeys.
Kentaro Ando, Toshiyasu Hombo, Akihiro Kanno, Hironobu Ikeda, Masakazu Imaizumi, Noritsugu Shimizu, Kengo Sakamoto, Shin-ichi Kitani, Yoshinori Yamamoto, Shingo Hizume, Keiko Nakai, Tetsuya Kitayama, Keiji Yamamoto   +12 more
doaj   +1 more source

Prolonged QTc-Interval in Liver Cirrhotic Patient: Prevalence and Its Relationship with Severity of Liver Dysfunction [PDF]

, 2004
Background: The aim of the study was to determine the prevalence of prolonged QTc -interval and it\u27s relationship with the severity of liver dysfunction in liver cirrhotic patient in the outpatient clinic of Hepatology, Dr.
Alwi, I. (Idrus), Firmansyah, I. (Iman), Hasan, I. (Irsan), Lesmana, L. (Laurentius), Rahardjo, P. (Pudji)   +4 more
core   +1 more source

Prevalence of Long QT Syndrome in Children with Congenital Sensory-Neural Deafness

Journal of Ardabil University of Medical Sciences, 2021
Background & objectives: Long QT syndrome (LQTS), congenital or acquired disorder, is characterized by a prolonged QT interval associated with syncope attacks and sudden death.
Ahmad Jamei Khosroshahi, Mahmoud Samadi, Shamsi Ghaffari, Akbar Molaei, Fatemeh Chakari   +4 more
doaj  

QTc interval on 24‐hour holter monitor: To trust or not to trust?

Annals of Noninvasive Electrocardiology, 2022
Introduction QT interval represents the ventricular depolarization and repolarization. Its accurate measurement is critical since prolonged QT can lead to sudden cardiac death.
Mhd Khalil Tamr Agha, Ghina Fakhri, Mohamed Ahmed, Omar El Sedawy, Bernard Abi Saleh, Fadi Bitar, Mariam Arabi   +6 more
doaj   +1 more source

Sensitivity of inhalation anesthetics isoflurane and sevoflurane for the drug-induced QT-interval prolongation in guinea pigs

Journal of Pharmacological Sciences, 2020
We investigated effects of isoflurane and sevoflurane on sparfloxacin-induced QT-interval prolongation in guinea pigs under the monitoring of electrocardiogram and monophasic action potential (MAP), which was compared with those of halothane or non ...
Yoshinobu Nagasawa, Kaori Sakai, Rui Kurimoto, Satoshi Kawakami, Megumi Aimoto, Akira Takahara   +5 more
doaj   +1 more source

Effect of Hydroxychloroquine and Azithromycin on QT Interval Prolongation and Other Cardiac Arrhythmias in COVID-19 Confirmed Patients

Cardiovascular Therapeutics, 2021
Background. Hydroxychloroquine with or without azithromycin was one of the common therapies at the beginning of the COVID-19 pandemic. They can prolong QT interval, cause torsade de pointes, and lead to sudden cardiac death.
Seyed Parsa Eftekhar, Sohrab Kazemi, Mohammad Barary, Mostafa Javanian, Soheil Ebrahimpour, Naghmeh Ziaei   +5 more
doaj   +1 more source

A study on stability analysis of atrial repolarization variability using ARX model in sinus rhythm and atrial tachycardia ECGs [PDF]

, 2016
© 2016 Elsevier Ireland Ltd Background The interaction between the PTa and PP interval dynamics from the surface ECG is seldom explained. Mathematical modeling of these intervals is of interest in finding the relationship between the heart rate and ...
Langley, Philip, Palanikumar, Gurusamy, Sivaraman, Jayaraman, Uma, Gandhi, Umapathy, M., Venkatesan, Sangareddi   +5 more
core   +1 more source

Epicardial adipose tissue predicted prolonged QTc interval in patients with arterial hypertension

Clinical and Experimental Hypertension, 2021
Introduction: It is important to identify those at higher risk for ventricular arrhythmia among hypertensive patients. Epicardial adipose tissue (EAT) leads to electromechanical changes in the heart by endocrine and paracrine effects with cytokines and ...
Ahmet Seyda Yılmaz, Göksel Çinier, Ömer Faruk Çırakoğlu, Mustafa Çetin   +3 more
doaj   +1 more source