Healio

PR Interval

The PR interval is the time from the beginning of the P wave (atrial depolarization) to the beginning of the QRS complex (ventricular depolarization). The normal PR interval measures 0.12-0.20 seconds ...
Nature

Correction of a short cardiac PR interval in a 12-year-old girl with late-onset Pompe disease following enzyme replacement therapy

To the Editor: We read with interest the article titled “Cardiovascular Abnormalities in Late Onset Pompe Disease and ERT” by Forsha et al. 1. Ninety patients were randomized 2:1 to enzyme replacement ...
The New England Journal of Medicine

Electrocardiographic Criteria in the Differential Diagnosis of Pre-Excitation (Wolff–Parkinson–White Syndrome) and Arteriosclerotic Heart Disease

THE electrocardiographic picture of prolonged QRS-complex duration with short PR interval was the subject of isolated reports 1,2 until Wolff, Parkinson and White 3 described the clinical syndrome of ...
Nature

Cardiac time intervals derived by magnetocardiography in fetuses exposed to pregnancy hypertension syndromes

To test the hypothesis that fetuses exposed to maternal preeclampsia or chronic hypertension have deranged development of cardiac time intervals. Pregnancies were divided into three groups: ...