Results: Significant age trends were present in, for example, P-wave duration, QTc interval, and frontal QRS axis, with concomitant changes of R amplitudes in the extremity leads. Sex differences existed for heart rate, interval durations, the Sokolow and Cornell indices, and QRS and ST-T ...
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 ...
function before and after administration of therapy.Result: HCV group showed significant increase in QTc interval, significant increase in A wave, Deceleration time in addition to highly significant decrease in tissue Doppler Ea, highly significant decrease in Aa and highly significant increased E/Ea ...
in postinfarction patients with normal intraventricular conduction. MATERIAL/METHODS: The study population consisted of 236 survivors of AMI, in whom the parameters of depolarization on SAECG (QRSd, LAS, RMS, LPs) and repolarization on ECG (QTc-max, QTd) were assessed before hospital discharge. ...
(QTc)intervalisquestionableinmany casesandshouldbesupplementedbymanualreading.Incon- sistencybetweenmanufacturersintermsofthealgorithms usedforcalculationoftheintervalsisanotherproblemin theinterpretationofcomputerizedreadings.Somedigitiz- ingmethodsemployadigitizingpad,magnifyinglamp,and pointingdevicetoidentifythe...
Results: Significant age trends were present in, for example, P-wave duration, QTc interval, and frontal QRS axis, with concomitant changes of R amplitudes in the extremity leads. Sex differences existed for heart rate, interval durations, the Sokolow and ...
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 ...
A pathologically prolonged QTc interval is usually defined as >450 ms for men and >470 ms for women =-=[18]-=-. In the present study, mean QTc did not exceed these thresholds with any of the methods. This could indicate that prolongation of the QTc cannot in itself explain the ...
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 ...
We report our results of 14 patients who underwent the 'bilayer collagen membrane' technique (BCMT) with a mean follow-up of 5.2 years (2 to 8). There were 12 men and two women with a mean age of 23.6 years (16 to 40). The mean size of the defect was 7.2 cm2 (5.2 to 12 ...