Abstract
BackgroundWide QRS complex tachycardia (WCT) is a common arrhythmia. How to differentiate between WCTs is a challenge in clinical practice. Recently R-wave peak time (RWPT) at lead II was reported to be a helpful and simple tool for differentiating WCTs. However, it has remained unknown about the reference range of RWPT at lead II. In present study, we aimed to investigate the reference range of RWPT at lead II in Chinese healthy adults.MethodsA retrospective study was conducted in the First Affiliated Hospital of Shantou University Medical College in Southern China. Two thousand four hundred healthy adults aged 21–80 years with no history of structural heart diseases were included. RWPT at lead II was determined.ResultsOf 2400 healthy adults, 1200 men and 1200 women were included. The differences of age, mean heart rate and mean QRS duration at lead II between male and female were not significant. RWPT ranged from 16 to 42 ms in male while from 16 to 44 ms in female. The 95 % reference range of RWPT in normal male and female are 19.91 ~ 39.55 ms and 21.75 ~ 37.67 ms, respectively. Compared with the female, the male had a significantly longer RWPT at lead II (29.73 ± 5.01 ms vs 29.71 ± 4.06 ms in female, P = 0.000).ConclusionOur study showed that RWPT at lead II is different between male and female. The male had a significantly longer RWPT at lead II than the female.
Highlights
Wide QRS complex tachycardia (WCT) is a common arrhythmia, which is defined as a rhythm with a rate >100/min and a QRS duration >120 ms
The male had a significantly longer R-wave peak time (RWPT) at lead II than the female (29.73 ± 5.01 ms vs 29.71 ± 4.06 ms in female, P = 0.000)
In conclusion, we found that the reference range of RWPT at lead II in male was different from in female
Summary
Wide QRS complex tachycardia (WCT) is a common arrhythmia. We aimed to investigate the reference range of RWPT at lead II in Chinese healthy adults. Wide QRS complex tachycardia (WCT) is a common arrhythmia, which is defined as a rhythm with a rate >100/min and a QRS duration >120 ms. Despite several algorithms and criteria have been proposed [1–3], making an accurate rapid differentiating between VT and SVT-A remains a significant clinical problem. Pava et al [4] reported a novel method to differentiate between WCTs, with R-wave peak time (RWPT) ≥50 ms it has remained unknown about the reference range of RWPT at lead II.
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