The girl had a normal QT interval (QTc=0.37) on the resting electrocardiogram (ECG). Infusion of induced QT prolongation (QTc=0.62) and frequent occurrence of multiform . Her Holter ECG showed a prolongation of the QTc interval with a shortening of the RR interval. Low-frequency power (LF...
Goldenberg I, Moss AJ, Zareba W (2006) QT interval: how to measure it and what is ``normal''. J Cardiovasc Electrophysiol 17 (3): 333-336.Goldenberg I, Moss AJ, Zareba W. QT interval: how to measure it and what is "normal". J Cardiovasc Electrophysiol 2006;17:333-6....
qtintervalhowtomeasureitandwhatis 系统标签: interval间期normalmeasurerepolarizationwave 333TECHNIQUESANDTECHNOLOGYEditor:HughCalkins,M.D.QTInterval:HowtoMeasureItandWhatIs“Normal”ILANGOLDENBERG,M.D.,ARTHURJ.MOSS,M.D.,andWOJCIECHZAREBA,M.D.,PH.D.FromtheCardiologyDivision,DepartmentofMedicine,UniversityofRo...
normalQTinterval)-Brugada综合征(短于正常的QT间期)是英文Brugada syndrome (shorter-than的中文翻译。该病是一种基因病、遗传病。佳学基因通过基因解码找到了导致这一疾病发生的基因。可以通过基因检测阻止normalQTinterval)-Brugada综合征(短于正常的QT间期)在后代或者二胎中的出现。根据《人的基因序列变化与人体疾病...
BACKGROUND: Physiological changes in the QT interval caused by sleep are important in the evaluation of the normal QT interval. Traditionally, Bazett's formula is used for correcting the QT interval for heart rate in childhood. We set out to establish the QT-RR relationship in infants during ...
Beat-to-beat variability of the QT interval (QTV) is sought to provide an indirect noninvasive measure of sympathetic nerve activity, but a formal quantification of this relationship has not been provided. In this study we used power contribution analysis to study the relationship between QTV and...
Drugs not commonly considered to be cardioactive agents have been reported to cause prolongation of the corrected QT interval with resultant torsades de po... JS Bertino,RC Owens,TD Carnes,... - 《Clinical Infectious Diseases An Official Publication of the Infectious Diseases Society of America》 ...
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 ...
Various QT interval variables and heart rate variability parameters were studied in six patients with ventricular fibrillation but without heart disease and compared with findings in 21 normal persons. QT and QT dispersion (QTd) were measured from conventional 12 lead ECGs: for dynamic QT analysis, ...
aWith ischaemia there is less shortening of the QT interval or even a prolongation during exercise . Therefore, normal values for QT interval-heart rate during ramp exercise tests on bicycles were required. Since generally, interval at rest is longer in women than in men both sexes were include...