The stability of the sinus rate is an important criterion of type II block because a vagal surge (generally a benign condition) that occurs invariably at the level of the AV node usually causes ...

The ECG shows severe sinus bradycardia with prolonged PR, prolonged QRS complex, prolonged QT interval, and an extra deflection at the end of the QRS complex (Osborn waves) (arrows). A second 12-lead ...

Review of 12-lead ECG during tachycardia shows a narrow complex tachycardia of 205 beats/min, with an RP interval of 120 ms.It is noteworthy that the RP interval and morphology of the P wave during ...

The first ECG changes seen with hyperkalaemia are high pointed T waves and shortened QT interval. Progressively, the QRS complex will widen, and loss of P wave may develop due to lack of impulse ...

All enrolled patients received standard 12-lead ECG recordings during the baseline assessment, using a paper speed of 25 mm/s and a calibration of 10 mm/mV. For all participants, we measured the QRS ...

In recent years, the rapid development of wearable devices and Internet of Things (IoT) technology has made realtime, continuous dynamic electrocardiogram (ECG) monitoring possible. However, robust ...

QRS Complex as a Marker for Asynchrony For successful application of a CRT system, stimulated myocardium should be viable to a larger extent allowing electro-mechanical conduction of impulses.

Most causes for waking up with a racing heart aren't serious. But some may require treatment. Learn the causes of heart palpitations and when to see a doctor.

Novo Nordisk has agreed to buy Cardior Pharmaceuticals for $1.1 billion, adding expertise in RNA therapeutics and a heart failure therapy in mid-stage trials.