Results 51 to 60 of about 59,149 (179)

Automated versus Manual Measurement of the QT Interval and Corrected QT Interval [PDF]

Annals of Noninvasive Electrocardiology, 2011
Background: The International Conference on Harmonization E14 Guideline specifies detailed assessment of QT interval or corrected QT interval prolongation when developing new drugs. We recently devised new software to precisely measure the QT interval.
Yuji, Kasamaki, Yukio, Ozawa, Masakatsu, Ohta, Akira, Sezai, Takashi, Yamaki, Mutsuo, Kaneko, Ichiro, Watanabe, Atsushi, Hirayama, Tomohiro, Nakayama   +8 more
openaire   +2 more sources

The QT interval in clinical hypercalcemia [PDF]

Clinical Cardiology, 1981
AbstractCorrected QT intervals were determined in 13 patients with severe, chronic hypercalcemia. The QOTC interval was short in only 2 of 14 instances; QATC in 5 of 15 instances, and QETC in 5 of 16 instances. The correlations between serum calcium and the QTC measurement were not significant when evaluating either linear or curvilinear (quadratic ...
J, Wortsman, S, Frank
openaire   +2 more sources

The Relationship Between Myocardial Bridge and Electrocardiographic Tp-e Interval, Tp-e/QT and Tp-e/QTc Ratio

, 2017
Aim: Myocardial bridge (MB) is generally known as an asymptomatic and benign anomaly, however, it can cause serious clinical conditions such as exercise-induced ventricular tachycardia and sudden death.
Erkan Yıldırım, Hikmet Hamur, Ozturk, Mustafa, IPEK, Emrah, Mustafa Öztürk, Cengiz, Mahir, Kamuran Kalkan, Emrah İpek, Mahir Cengiz, HAMUR, HİKMET, Yildirim, Erkan, KALKAN, Kamuran   +11 more
core   +1 more source

QTc interval measurement in patients with right bundle branch block: A practical method

Annals of Noninvasive Electrocardiology, 2023
Background and Aim Prolonging the QT interval in the right bundle branch block (RBBB) can create challenges for electrophysiologists in estimating repolarization time and eliminating the effect of depolarization changes on QT interval.
Abolfath Alizadeh, Mohammad Amin Shahrbaf, Mohammadrafie Khorgami, Mahboubeh Zeighami, Ala Keikhavani, Hamid Mokhtari Torshizi, Zahra Teimouri‐jervekani   +6 more
doaj   +1 more source

Prolonged QT interval: A tricky diagnosis? [PDF]

, 1997
Prolonged heart-rate adjusted QT intervals on the electrocardiogram (ECG) are associated with an increased risk far coronary heart disease and sudden death. However, the diagnosis of the prolonged QT interval is hampered by lack of standards.
Hofman, A. (Albert), Hoes, A.W. (Arno), Bruyne, M.C. (Martine) de, Kors, J.A. (Jan), Bemmel, J.H. (Jan) van, Grobbee, D.E. (Diederick), Dekker, J.M. (Jacqueline)   +6 more
core   +1 more source

The effect of esmolol on corrected-QT interval, corrected-QT interval dispersion changes seen during anesthesia induction in hypertensive patients taking an angiotensin-converting enzyme inhibitor

Revista Brasileira de Anestesiologia, 2015
BACKGROUND AND OBJECTIVES: The importance of minimizing the exaggerated sympatho-adrenergic responses and QT interval and QT interval dispersion changes that may develop due to laryngoscopy and tracheal
Zahit Çeker, Suna Akin Takmaz, Bülent Baltaci, Hülya Basar   +3 more
doaj   +1 more source

Sistema integrado para a análise quantitativa da repolarização cardíaca [PDF]

, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2012.Os sinais eletrocardiográficos (ECG), quando coletados no padrão de 12 derivações, fornecem ...
Balotin, Amauri Fagundes
core  

THE WAYS TO ENHANCE SAFETY OF COMBINATIONS OF DRUGS PROLONGING QT INTERVAL IN THE OUT-PATIENT AND POLYCLINIC PRACTICE

Вестник анестезиологии и реаниматологии, 2018
Prolongation of QT interval is a predictor of fatal disorders of cardiac rhythm and sudden death. Side effects of medications is one of the main causes of prolonged QT interval.
E. V. Shikh, Zh. M. Sizova, A. D. Ismagilov, M. A. Vyzhigina   +3 more
doaj   +1 more source

The QT interval during reflex cardiovascular adaptation.

, 1984
We examined the relationship between changes in heart rate and the measured QT interval of the electrocardiogram in healthy subjects after exercise and during breath holding, hyperventilation, the dive reflex, the Valsalva maneuver, and the cold-pressor ...
Wolf, S, Davidowski, T A
core   +2 more sources

Correlation between QT interval and RR interval on the epicardial electrogram in open-chest dog. [PDF]

, 1982
Correlation between QT interval and RR interval on epicardial electrogram in anesthetized open-chest dog was studied. The aortic blood pressure was kept above 70mmHg during the course of the experiment.
Hideo NAGASHIMA, Haraoka, Shoichi, Tazuo HYODO, Shoichi HARAOKA, Hyodo, Tazuo, Nagashima, Hideo, Takeda, Kou, Daiji SAITO, Saito, Daiji, Kou TAKEDA, Yasuhara, Koichiro, Koichiro YASUHARA   +11 more
core   +1 more source