Bradycardia, a slow resting heart rate, is healthy for elite athletes — but it can be dangerous if not caused by exercise ...

Key points A 68-year-old woman from rural Ontario arrived at her local emergency department with worsening palpitations. Her medical history included breast cancer treated with surgical resection and ...

The QRS complex is irregular and coarse "fibrillatory waves" are present (see atrial fibrillation review by clicking below) indicating the presence of atrial fibrillation. There is quite a slow ...

That flutter in your chest could be more than stress. Doctors explain how arrhythmia, an irregular heartbeat, can signal ...

This case of a 80-year-old woman with chest pain is used to demonstrate the signs and symptoms of sundowning, along with its management.

Not all atrial flutters demonstrate the typical "sawtooth" pattern. During the times of lesser conduction on this ECG, the flutter waves are more apparent. The atrial rate is organized at a rate of ...

Often referred to as a 'silent condition', atrial fibrillation can go unnoticed because its effect on the ventricles is often minimal.

Exercise‐induced high heart rate may impair exercise tolerance by reducing diastolic filling time and ventricular filling in heart failure with preserved ejection fraction (HFpEF). Given the ...

Introduction and objectives: Resting heart rate is a readily available vital sign with important prognostic significance. However, traditional measures overlook both the magnitude and duration of ...

Background: Atrial fibrosis serves as a key pathological basis for atrial fibrillation, significantly elevating the risk of cardiovascular events. However, its molecular mechanisms remain incompletely ...

Circadian clocks of wheat can provide a window into the plant's nutrient content and life cycle, finds new research that ...

The U.S. Food and Drug Administration has approved Amgen and AstraZeneca's drug for a type of chronic inflammatory sinus ...