Most common cause of sudden cardiac death?

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Multiple Choice

Most common cause of sudden cardiac death?

The main idea is that sudden cardiac death is typically caused by a life-threatening ventricular rhythm that stops effective pumping, with the most common culprit being ventricular fibrillation. In ventricular fibrillation, the ventricles twitch ineffectively in a chaotic, disorganized pattern, producing no meaningful cardiac output. This is highly time-sensitive—defibrillation is the only way to quickly restore a perfusing rhythm, which is why immediate defibrillation and CPR are critical in these cases. Asystole and pulseless electrical activity reflect little to no coordinated electrical activity and tend to have a poorer prognosis, as they are non-shockable rhythms and indicate advanced or severe underlying disease. Ventricular tachycardia can also cause sudden collapse if pulseless, but ventricular fibrillation is the more common fatal rhythm seen in sudden cardiac death.

The main idea is that sudden cardiac death is typically caused by a life-threatening ventricular rhythm that stops effective pumping, with the most common culprit being ventricular fibrillation. In ventricular fibrillation, the ventricles twitch ineffectively in a chaotic, disorganized pattern, producing no meaningful cardiac output. This is highly time-sensitive—defibrillation is the only way to quickly restore a perfusing rhythm, which is why immediate defibrillation and CPR are critical in these cases.

Asystole and pulseless electrical activity reflect little to no coordinated electrical activity and tend to have a poorer prognosis, as they are non-shockable rhythms and indicate advanced or severe underlying disease. Ventricular tachycardia can also cause sudden collapse if pulseless, but ventricular fibrillation is the more common fatal rhythm seen in sudden cardiac death.

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