Question

Which of these arrhythmias is due to a heartbeat originating in the ventricles that occurs early in the cycle and is followed by a pause before the next cycle?

1) Atrial fibrillation
2) Ventricular fibrillation
3) Premature ventricular contractions
4) Sinus arrhythmia

Answer 1

The arrhythmia characterized by an early heartbeat from the ventricles followed by a pause is known as Premature Ventricular Contractions (PVCs).

Step-by-step explanation:

The arrhythmia described in the question, where a heartbeat originating in the ventricles occurs early in the cycle and is followed by a pause before the next cycle, is known as Premature Ventricular Contractions (PVCs). This condition is one of the extra beats types of arrhythmias and can be identified by an abnormal QRS complex on an electrocardiogram, followed by a compensatory pause until the next normal heartbeat occurs.