Results 41 to 50 of about 133,758 (181)

QT Interval Revisited —Not Just the Matter of “Interval,” but “Dynamics, Variability and Morphology” Matter!—

Journal of Arrhythmia, 2007
Recently, the effects of QT interval prolongation have received more attention among clinicians, industry, and official regulatory agencies. Some have advocated the total elimination or discontinuing development of drugs which prolong the QT interval. In
Tetsunori Saikawa, MD, Mikiko Nakagawa, MD, Naohiko Takahashi, MD   +2 more
doaj   +1 more source

Age-Gender Influence on the Rate-Corrected QT Interval and the QT-Heart Rate Relation in Families With Genotypically Characterized Long QT Syndrome [PDF]

, 1997
Objectives. We sought to analyze age-gender differences in the rate-corrected QT (QTc) interval in the presence of a QT-prolonging gene.Background. Compared with men, women exhibit a longer QTc interval and an increased propensity toward torsade de ...
Frankovich, Debra, Fromm, Barbara S, Keating, Mark, Lehmann, Michael H, Locati, Emanuela H, Moss, Arthur J, Schwartz, Peter J, Taggart, PhD, R.Thomas, Timothy, Katherine W, Towbin, Jeffrey A, Vincent, G.Michael   +10 more
core   +1 more source

Диспластические синдромы и фенотипы в оценке изменений интервала QT при малых аномалиях сердца

Архивъ внутренней медицины, 2011
To assess relation of dysplastic syndromes and phenotypes to pathological QT interval in patients with minor cardiac anomalies, 128 patients aged 18–35 years were examined.
А. В. Ягода, Н. Н. Гладких, Я. С. Григорян   +2 more
doaj   +3 more sources

Prevalence of QTc interval prolongation and its associated risk factors among psychiatric patients: a prospective observational study

BMC Psychiatry, 2020
Background QT interval prolongation is a growing concern worldwide, posing psychiatric patients to life-threatening fatal arrhythmias i.e., torsade de pointes.
Zahid Ali, Mohammad Ismail, Zahid Nazar, Fahadullah Khan, Qasim Khan, Sidra Noor   +5 more
doaj   +1 more source

QT Indexes in Cirrhotic Patients: Relationship with Clinical Variables and Potential Diagnostic Predictive Value. [PDF]

, 2015
BACKGROUND AND AIMS: A wide spectrum of cardiovascular changes characterizes cirrhosis, ranging from subclinical alterations to hyperkinetic syndrome.
BUTTA', Carmelo, CASUCCIO, Alessandra, CIRRINCIONE, Anna, D'AGUANNO, Gisella, DI RAIMONDO, Domenico, GIARRUSSO, Lucia, Miceli, G., Pecoraro, R., PINTO, Antonio, Renda, C., Serio, A., TUTTOLOMONDO, Antonino   +11 more
core   +1 more source

The effects of peritoneal dialysis on QT interval in ESRD patients

BMC Nephrology, 2022
Background Patients with chronic kidney disease (CKD) are at a high risk of fatal arrhythmias. The extended corrected QT (QTc) interval is a hallmark of ventricular arrhythmias and sudden cardiac death.
Wenjing Zhang, Yu Liang, Jia Lv, Yan Li, Jiping Sun   +4 more
doaj   +1 more source

Thoracic epidural analgesia prolongs postoperative QT interval on electrocardiogram in major non-cardiac surgery: a randomized comparison and a prospective cohort analysis

Frontiers in Pharmacology, 2023
Introduction: Prolongation of QT interval on electrocardiogram can be associated with perioperative lethal arrhythmia. Epidural analgesia is a commonly used modality to relieve surgical pain by blocking sensory nerves, which also blocks the autonomic ...
Kotaro Hori, Shogo Tsujikawa, Mika Egami, Sayaka Waki, Ryota Watanabe, Hideki Hino, Tadashi Matsuura, Takashi Mori   +7 more
doaj   +1 more source

Spatial variation of QT intervals in normal persons and patients with acute myocardial infarction [PDF]

, 1985
The QT interval is a clinically important electrocardiographic measurement. This study attempted to determine 1) whether this interval was spatially distributed in a physiologically meaningful way on the torso of normal subjects, and 2) if these spatial ...
Mirvis, David M.
core   +1 more source

Diurnal pattern of QTc interval: How long is prolonged? Possible relation to circadian triggers of cardiovascular events [PDF]

, 1996
Objectives.This study sought to evaluate the range and variability of the QT and corrected QT (QTc) intervals over 24 h and to assess their pattern and relation to heart rate variability.Background.Recent Holter monitoring data have revealed a high ...
Ehlert, Frederick A., Molnar, Janos, Rosenthal, James E., Weiss, Jerry, Zhang, Feng   +4 more
core   +1 more source

Long QT: Good, bad or indifferent? [PDF]

, 1984
A survey of current literature suggests an increasing interest in both the desirable and undesirable implications of a prolonged QT interval, the former perceived to be the beneficial effect of antiarrhythmic drugs that prolong the duration of ...
Knoebel, Suzanne B., Surawicz, Borys
core   +1 more source