Question

which condition is the most likely and gives us the greatest concern as a result of a lightning strike injury?

paralysis.
burn injury.
cardiac involvement.
respiratory depression.

Explanation:

Analyze the physiological effects of lightning

Using the Lightning Strike Pathophysiology knowledge point

A lightning strike acts as a massive direct current (DC) countershock that depolarizes the entire myocardium simultaneously, leading to immediate cardiac arrest (typically asystole). Because the heart's intrinsic pacemakers may spontaneously recover while the respiratory center in the medulla remains paralyzed for a longer duration, respiratory arrest and subsequent secondary cardiac arrest due to hypoxia are the primary life-threatening concerns. Therefore, cardiac involvement (including immediate cardiac arrest and arrhythmias) is the most critical and immediate concern following a lightning strike.

Evaluate the given options

Using the Lightning Strike Pathophysiology knowledge point

• Paralysis: Temporary paralysis (keraunoparalysis) is common but usually resolves within hours and is not the primary life threat.
• Burn injury: While dramatic, lightning burns are often superficial (such as feathering/Lichtenberg figures) because the current flashes over the outside of the body (flashover effect). They are rarely the immediate cause of death.
• Cardiac involvement: Immediate cardiac arrest (asystole) or severe dysrhythmias represent the most immediate, likely, and life-threatening concern.
• Respiratory depression: While respiratory arrest is a major concern, the massive electrical depolarization of the heart (cardiac involvement) is the immediate, primary life-threatening event that dictates initial resuscitation priorities.

Answer:

• Paralysis.
• Burn injury.
• Cardiac involvement. (Correct answer)
• Respiratory depression.