Electrical substation scene — DipIMC MCQ

Correct answer: D — Confirm isolation and specialist rescue before entry

Option D is correct because Electrical scenes require confirmation that the source has been isolated before rescuers enter. Immediate contact may turn the responder into the next casualty, while remote advice without scene control is inadequate. The priority is safe access coordinated with fire and utility specialists. Option C is less appropriate because oxygen may be supportive, but it does not address the defining time-critical problem first; option E is less appropriate because vascular access is useful, but it should not delay the immediate priority. Option B is less appropriate because it is plausible in a different scenario but suboptimal for the features described; option A is less appropriate because delay would increase clinical risk. Clinical pearl: in DipIMC-style questions, the best answer is the intervention that changes outcome earliest in the pre-hospital phase.

Reference: JRCALC Guidelines; MIMMS