What is the common arrhythmia resulting in sudden cardiac death?

What is the common arrhythmia resulting in sudden cardiac death?

• A. Atrial flutter
• B. Ventricular fibrillation
• C. Sinus bradycardia
• D. Supraventricular tachycardia

Answer: (B)

Ventricular fibrillation is a critical and life-threatening arrhythmia that can lead to sudden cardiac death. In this condition, the heart's ventricles quiver ineffectively instead of contracting normally, resulting in an inability to pump blood effectively. This chaotic electrical activity in the heart prevents it from maintaining a viable cardiac output, leading to loss of consciousness and, if uncorrected, death within minutes. The abrupt onset of ventricular fibrillation often occurs in individuals with underlying heart disease, but it can also happen in those without prior symptoms. Immediate defibrillation is required to restore normal heart rhythm, making early recognition and treatment of this arrhythmia crucial for survival. In contrast, atrial flutter, sinus bradycardia, and supraventricular tachycardia do not typically result in sudden cardiac death and are usually more manageable with appropriate medical intervention. While they can cause complications, they do not have the same immediate fatal consequences as ventricular fibrillation.

Ventricular fibrillation is a critical and life-threatening arrhythmia that can lead to sudden cardiac death. In this condition, the heart's ventricles quiver ineffectively instead of contracting normally, resulting in an inability to pump blood effectively. This chaotic electrical activity in the heart prevents it from maintaining a viable cardiac output, leading to loss of consciousness and, if uncorrected, death within minutes.

The abrupt onset of ventricular fibrillation often occurs in individuals with underlying heart disease, but it can also happen in those without prior symptoms. Immediate defibrillation is required to restore normal heart rhythm, making early recognition and treatment of this arrhythmia crucial for survival.

In contrast, atrial flutter, sinus bradycardia, and supraventricular tachycardia do not typically result in sudden cardiac death and are usually more manageable with appropriate medical intervention. While they can cause complications, they do not have the same immediate fatal consequences as ventricular fibrillation.