Final answer:
Supraventricular tachycardias, ventricular arrhythmias, extra beats, and bradycardias may occur if enhanced automaticity occurs.
Step-by-step explanation:
Rhythms that may occur if enhanced automaticity occurs include:
- Supraventricular tachycardias: Atrial fibrillation, atrial flutter, and paroxysmal supraventricular tachycardia.
- Ventricular arrhythmias: Ventricular fibrillation and ventricular tachycardia.
- Extra beats: Premature atrial contractions, premature ventricular contractions, and premature junctional contractions.
- Bradycardias: Abnormally slow heart rhythms that can occur.