کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2968473 | 1178876 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Beat-to-beat QT interval variability in children: normal and physiologic data Beat-to-beat QT interval variability in children: normal and physiologic data](/preview/png/2968473.png)
BackgroundQT interval variability provides information on ventricular vulnerability. However, QT interval variability in children has not been adequately evaluated.MethodsOne hundred seventy-three consecutive nursing infants and children (male-female, 106:67) up to school age with no intrinsic cardiac disease were included in this study, and they were categorized into 6 age-related groups. The QT variability index (QTVI) was calculated based on an electrocardiogram; and age-specific standard values, sex-specific classification, and a standard growth curve covering 0 to 7 years were constructed.ResultsThe QTVI decreased in an age-dependent manner, reached constant values after school age, and exhibited no sex-specific differences in 6 age-related groups.ConclusionsBased on the age-dependent standardized QTVI values, it is possible to estimate the instability of ventricular repolarization in pediatric patients with better accuracy.
Journal: Journal of Electrocardiology - Volume 44, Issue 3, May–June 2011, Pages 326–329