The first QRS complex is narrow and supraventricular (*). It is followed by a rapid and irregular rhythm with a rate of up to 300 beats/min. The QRS complexes are unusual and show marked variability ...

The diagnosis is sinus rhythm, PVCs and echo beats (complexes). The rhythm is irregular but there is a repeating pattern (group beating) with three QRS complexes and a pause. Therefore, the rhythm is ...

Narrow-complex tachyarrhythmias are rapid heart rhythms originating in the upper heart chambers, characterized by a QRS duration of less than 120 milliseconds on an EKG. These arrhythmias can be ...

Supraventricular tachycardia is a term used to describe any heart rhythm that is greater than 100 beats per minute originating from above the AV node (the atrium). The term “SVT” can be confusing at ...

We were unable to process your request. Please try again later. If you continue to have this issue please contact [email protected]. Here is a classic ECG case not usually caught on a ...