Asystole is defined as?

Asystole is defined as?

• A. Absence of ventricular electrical activity with no contraction
• B. Rapid ventricular tachycardia
• C. Atrial fibrillation
• D. Normal sinus rhythm

Answer: (A)

Asystole means there is a complete lack of electrical activity in the heart, so there are no contractions and no cardiac output. On the monitor you’d see a flat line, indicating no perfusion. This is why the correct approach is to start high-quality CPR and give medications like epinephrine per ACLS guidelines; defibrillation isn’t used because there’s no rhythm to shock. This differs from rapid ventricular tachycardia, which shows a fast, organized ventricular rhythm; atrial fibrillation involves chaotic atrial activity with irregular rhythm but still some electrical activity; and normal sinus rhythm shows normal electrical activity with P waves and a regular rate.

Asystole means there is a complete lack of electrical activity in the heart, so there are no contractions and no cardiac output. On the monitor you’d see a flat line, indicating no perfusion. This is why the correct approach is to start high-quality CPR and give medications like epinephrine per ACLS guidelines; defibrillation isn’t used because there’s no rhythm to shock.

This differs from rapid ventricular tachycardia, which shows a fast, organized ventricular rhythm; atrial fibrillation involves chaotic atrial activity with irregular rhythm but still some electrical activity; and normal sinus rhythm shows normal electrical activity with P waves and a regular rate.