This ECG shows sinus bradycardia at 55 beats per minute with a prolonged PR interval, about 0.24 sec, consistent with first-degree atrioventricular block. The QRS duration is top normal at 0.12 sec ...

This ECG does not meet criteria for ventricular tachycardia. The R in lead V2 is larger than the R', however the criteria examine this QRS morphology change in lead V1, not lead V2. The morphology is ...

The Galaxy Watch 8 Classic has dual-band GNSS, and it's also equipped with Samsung’s BioActive Sensor. The latter has a ...