Which scenario is listed as a DOA criterion involving underwater events?

• A. Underwater submersion for greater than 60 minutes
• B. Decapitation or gross dismemberment
• C. Lividity
• D. Rigor mortis

Answer: (A)

When evaluating deaths that occur underwater, timing is a key factor. If a person has been submerged for more than 60 minutes, the chances of successful resuscitation are extremely low due to prolonged hypoxia and potential cold-water effects, so declaring the scene as dead on arrival is standard practice. This time-based threshold is specifically tied to underwater events, making it the best-fit scenario for a DOA determination in that context.

Decapitation or gross dismemberment, while unequivocally fatal, concerns catastrophic injuries rather than the specific underwater timing criterion being described. Lividity and rigor mortis are postmortem changes that confirm death has occurred but do not serve as the primary underwater-specific criterion used to declare DOA in the field.