Answer :
Final answer:
The word 'patent' in the sentence means open, referring to an unobstructed airway.
Explanation:
The meaning of the word 'patent' in the sentence is open. In this context, 'patent' refers to ensuring that the victim's airway is unobstructed and allowing airflow to the lungs. It is important for a rescuer to check the airway for any blockages before performing rescue breaths.
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