The maternal heart significantly adapts to the circulatory needs of pregnancy, but the effect of pregnancy on ventricular repolarization is poorly understood. The aim of this study was to quantify ...

The diagnosis is normal sinus rhythm, atrial bigeminy, first-degree atrioventricular (AV) block (prolonged AV conduction), and right bundle branch block (RBBB). The rhythm is slightly irregular, with ...

OBJECTIVE: To evaluate the dynamic RT (QRS apex-end of T wave) rate dependence in newborns. STUDY DESIGN: A Digital Holter ECG was acquired on day 15 in nine full-term and eight preterm infants.

The rhythm is irregular, but the long intervals are the same (↔) and the short intervals (┌┐) are the same. One premature QRS complex (↑) is observed. Therefore, the rhythm is regularly irregular. The ...

Atrial fibrillation with a slow ventricular response Right bundle branch block Prolonged QT interval (with normal QTc interval) The QRS complex is irregular and coarse "fibrillatory waves" are present ...

An electrocardiogram, commonly called an ECG, is one of the most widely used tools for checking heart health. It records the electrical signals that control your heartbeat and can reveal problems such ...

An electrocardiogram, also called an ECG or EKG, is a simple and painless test that measures the electrical impulses of your heart to check for signs of heart disease. It's done through small ...