Few specific supraventricular rhythm disturbances other than sinus tachycardia were documented in both experimental and observational studies (most commonly nonsustained SVT, atrial fibrillation ...

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An electrocardiogram, also called an ECG or EKG, is a diagnostic tool that evaluates the heart's electrical system. By examining ECG wave patterns, a doctor can determine a person's heart rate and ...

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The scientists conducting this multiyear study want to know how prolonged changes to circadian rhythms—the internal processes that follow a roughly 24-hour cycle—may affect metabolism and body weight ...

Circadian rhythms are the regular, daily cycles of biological processes or activities, including the regular and predictable variation in the levels of many circulating hormones, ions and the ...

Arrhythmias are conditions in which electrical impulses are abnormally conducted through the heart, resulting in an altered heart beat muscle contraction rhythm. These alterations to heart ...

In these patients, we usually prescribe AV-node slowing agents despite moderate bradycardia during sinus rhythm. The ‘pill-in-the pocket’ approach with class I drugs is recommended in athletes with ...