Final answer:
Cardiac monitoring is essential for electrical burns to monitor the heart's activity and prevent fatal complications.
Step-by-step explanation:
Cardiac monitoring is essential for electrical burns. When the heart is exposed to electrical current, it can disrupt its electrical patterns and cause irregular heartbeat, known as ventricular fibrillation. This condition can be fatal due to lack of blood circulation. Therefore, monitoring the heart's activity is crucial for timely intervention and treatment.