Why is it important to tilt the patient’s head back gently and lift chin forward at the same time before starting mouth-to-mouth breathing? A. To retain all carbon dioxide that might otherwise be exhaled.
B. To prevent the breath from escaping through the nose rather than entering through the airways.
C. To open the patient’s airway properly.
D. To allow the breath to flow out the patient’s nose.

Explanation:

If the chin is slacked, and not lifted, it can partially block the back of the throat. So by tilting the patient's head back gently and lifting the chin upwards, it opens up the area in the throat for the air to enter properly and safely.

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