Which of the following is a common reversible cause of asystole?

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Multiple Choice

Which of the following is a common reversible cause of asystole?

The key idea is that in cardiac arrest, addressing reversible causes quickly can restore circulation. Among reversible factors, lack of adequate oxygen delivery is the most common and crucial to fix. When tissues don’t get enough oxygen, the heart’s electrical activity can fail, leading to asystole. Ensuring airway patency and delivering sufficient oxygen so the patient is well-ventilated can often reverse the arrest if hypoxia is the underlying issue. That’s why providing 100% oxygen and effective ventilation is prioritized early in resuscitation. The other options represent real reversible problems, but they’re less frequently the immediate cause of asystole in many resuscitation scenarios. Hypothermia can cause arrest, and severe electrolyte disturbances like extreme hyperkalemia can disrupt conduction, while tamponade mechanically impairs filling; each requires specific, targeted treatment beyond standard CPR.

The key idea is that in cardiac arrest, addressing reversible causes quickly can restore circulation. Among reversible factors, lack of adequate oxygen delivery is the most common and crucial to fix. When tissues don’t get enough oxygen, the heart’s electrical activity can fail, leading to asystole. Ensuring airway patency and delivering sufficient oxygen so the patient is well-ventilated can often reverse the arrest if hypoxia is the underlying issue. That’s why providing 100% oxygen and effective ventilation is prioritized early in resuscitation.

The other options represent real reversible problems, but they’re less frequently the immediate cause of asystole in many resuscitation scenarios. Hypothermia can cause arrest, and severe electrolyte disturbances like extreme hyperkalemia can disrupt conduction, while tamponade mechanically impairs filling; each requires specific, targeted treatment beyond standard CPR.

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