Which technique is used if the person's jaw or mouth is injured or cannot be opened for rescue breaths?

• A. Mouth-to-nose breathing
• B. Mouth-to-mouth breathing
• C. Breathing into the chest only
• D. No breaths are given

Answer: (A)

When the jaw or mouth cannot be opened, you can still deliver rescue breaths by using mouth-to-nose ventilation. In this approach, you place your mouth over the person's nose and seal around it, then gently blow air into their nostrils so breaths reach the lungs. This method works because it bypasses the need to open or seal the mouth, which isn’t possible with an injured jaw. The other options don’t fit: mouth-to-mouth isn’t possible if the mouth can’t be opened, breathing into the chest isn’t a standard way to provide breaths, and giving no breaths would deprive the person of oxygen.