QT interval-heart rate relation during exercise in normal men and women: definition by linear regression analysis J Am Coll Cardiol, 28 (1996), pp. 1547-1555 View PDFView articleView in ScopusGoogle Scholar 23 M. Kawataki, T. Kashima, H. Toda, H. Tanaka Relation between QT interval and...
Sex differences existed for heart rate, interval durations, the Sokolow and Cornell indices, and QRS and ST-T amplitudes in different leads. Notably, left-precordial R-wave amplitudes in women increased with age; the Sokolow index showed a clearer age trend for men than for women, the ...
This change produces a decrease in the length of the QTc interval. There is a lack of correlation QTc and serum calcium. The interval from the qt to the apex of the T wave can be measured most precisely and shows the best correlation with the Ca level (Fig. 94-29c). First degree ...
Age trends were apparent for the QTc interval, QRS axis, and indices of left ventricular hypertrophy. Amplitudes in the left precordial leads showed a substantial increase in the older age groups for women, but not for men. Sex-dependent differences were apparent for most ECG parameters. All ...
A68yearoldwomenonDigoxincomplainingoffatigue A57yearoldwomanwithpalpitations AwomanwithRomano-WardSyndrome QTc NormalQTc Men<0.43 borderlineo.43-0.45 prolonged>0.45 Women<0.43 borderlineo.43-0.47 prolonged>0.47 A50yearoldmanwithchestpainfor2-4hours A45yearoldwomenwithpalpitationandahistoryofCRF A69yearold...
Mandal B,Kaur G,Batra YK,Mahajan S.Manifestation of Long QT syndrome with normal QTc interval under an- esthesia: a case report. Paediatric Anaesthesia . 2011MANDAL B, KAUR G, BATRA YK, MAHAJAN S. Manifes- tation of long QT syndrome with normal QTc in- terval under anesthesia: a case...
QTcObjectivesWe sought to determine whether the relationship between heart rate (HR) and QT interval (QT) differs as HR increases in response to exercise, atropine and isoproterenol.: BackgroundAutonomic nervous system influences on repolarization are poorly understood and may complicate the ...
Age trends were apparent for the QTc interval, QRS axis, and indices of left ventricular hypertrophy. Amplitudes in the left precordial leads showed a substantial increase in the older age groups for women, but not for men. Sex-dependent differences were apparent for most ECG parameters. All ...
When the QTc interval is "shortened" in response to a decrease in the RR interval (a> -0.079), the QT response is considered normal. When the QTc interval is "lengthened" (a -0.079), the reaction is considered pathological. ;EFFECT: method improves accuracy of detecting the latent ...
However, it may occasionally progress to ventricular fibrillation and sudden death. In this article, we report a case of COVID-19 patient who developed polymorphic ventricular tachycardia with torsade de pointes morphology with normal QTc interval in the setting of fever. An 81-year-old woman was...