Electrical burns may cause deep tissue damage with minimal external signs. Which additional finding should EMS monitor?

• A. Arrhythmias and cardiorespiratory instability
• B. Only superficial skin changes
• C. No risk of arrhythmias
• D. External signs always severe

Answer: (A)

Electrical burns can cause deep tissue damage even when the skin looks minimally burned because the current can travel through the body and affect internal structures. The heart’s electrical conduction system and the muscles used for breathing are particularly vulnerable, so the most important thing EMS should monitor is heart rhythm and overall cardiorespiratory stability. Arrhythmias can develop suddenly, and patients may deteriorate quickly if the airway, breathing, or circulation is compromised, even if external signs are mild. Because external injuries don’t reliably reflect internal injury, assuming there’s only superficial skin damage or that there’s no risk is unsafe. Likewise, assuming external signs are always severe isn’t accurate, since serious internal damage can occur with little to no visible evidence. Continuous ECG monitoring and observation of breathing and consciousness are essential to detect and respond to potential arrhythmias and instability.