Because the normal ventricular conduction system (His-Purkinje) is used, the QRS complex is frequently narrow. A junctional rhythm is normally slow — less than 60 beats per minute. When faster ...

Now, look at the rhythm strip at the bottom in lead V1 to see the AV dissociation. This ECG also meets the Brugada Criteria for concordance. In this LBBB pattern, all the QRS complexes are ...

This is a type of narrow complex tachycardia, with a narrow QRS in the ECG. Ventricle pacemaker cells have a normal rate between 20 and 40 bpm. A faster rhythm is known as accelerated ...

Studies investigating QRS-complex abnormalities in association ... in experimental studies investigating cocaine-associated rhythm disturbances. Most of the studies providing temporal data suggest ...

The regular arrhythmia occurring at the beginning of the electrocardiogram was identified as ventricular bigeminy. Single ventricular premature complexes (VPCs), as well as pairs and triplets of ...