When you have supraventricular tachycardia, your heart's electrical system sometimes makes it beat faster than normal. You can have a bout of SVT even when you're not stressed out or exercising hard.

Any tachycardic rhythm with a left or right bundle branch block that is NOT ventricular tachycardia is considered "supraventricular tachycardia with aberrancy". This would even include sinus ...

Abbreviations: SEER, Surveillance, Epidemiology, and End Results; MI, myocardial infarction. We matched 82.7% of nonusers with users on type of cancer, age, sex, SEER region, and bone metastasis. The ...

This article has been updated with comments from the study’s corresponding author. New findings from a 2017 study of the Apple Watch’s ECG feature found that it could potentially be used to detect ...