2018-6-19 · 一、正常的 QRS 波群 QRS 波群（QRS interval）：表示心室的除极化 1、在时间上 QRS 波群正常的时间为 0.06～0.10s，如图 1 红色曲线所示，也就是 1.5 到 2.5 小格，绝对 不会超过 3 个小格（课本上说是 0.11s，但我都是按照 3 个小格记得，因为半格的差别
The PR interval reflects whether impulse conduction from the atria to the ventricles is normal. The PR interval must not be shorter than 120 msec or longer than 220 msec. The PR segment is the flat line between the end of the P-wave and the start of the QRS complex. The PR segment reflects the time delay between atrial and ventricular activation. P-R interval | definition of P-R interval by Medical P-R interval: the interval from the beginning of the P wave to the beginning of the QRS complex on an electrocardiogram. It represents the atrioventricular conduction time, which normally is … PR Interval Lesson and Quiz - Practical Clinical Skills The PR Interval indicates AV conduction time. In this step you should measure the interval from where the P wave begins until the beginning of the QRS complex. Calipers, marked paper or counting small boxes methods can be used to determine PR Intervals. PR Interval - My EKG English
P-R interval | definition of P-R interval by Medical
PR interval - wikidoc
PR interval - wikidoc
PR Interval. The PR interval is the time between the start of the P wave and the start of the R wave and is up to 0.2 seconds. From: Principles and Practice of Sleep Medicine (Fifth Edition), 2011 Related terms: