in whom the atrial contribution to ventricular filling plays a greater role due to a stiffer heart. [29] It is therefore reasonable to assume that a faster heart rate in AF, compared to sinus ...

The atrial rate is indicated by the frequency of the P waves. The ventricular rate is indicated by the frequency of the QRS complexes. In the absence of disease, the atrial rate should be the same ...

The harder your heart has to work to pump blood throughout your body while you're not exercising, the higher your resting ...

An idioventricular rhythm is very similar to ventricular tachycardia except the ventricular rate is less than 60 beats per minute. All other characteristics of VT apply; this includes the presence ...

The ventricular response in untreated patients with atrial fibrillation often exceeds 120 beats/min at rest. Digoxin can slow this rate, but its efficacy during exertion may be limited.