Burns usually do not alter levels of consciousness, so you should assume that any victim who is unconscious is suffering from:

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Quizplus · Accepted Answer

Burns typically do not affect a person's level of consciousness. If a burn victim is found unconscious, it is important to consider other causes for their condition. Carbon monoxide poisoning is a common risk in situations where burns occur, such as fires, because it can be produced by the incomplete combustion of various fuels. Carbon monoxide is a colorless, odorless gas that can lead to unconsciousness and even death if inhaled in sufficient quantities, making it a likely cause of altered consciousness in a burn victim.

Burns Usually Do Not Alter Levels of Consciousness, So You