What technique is used to assess nasal patency in a patient?

The correct technique for assessing nasal patency involves asking the patient to hold one nare (nostril) closed while they breathe through the other nare. This method allows the healthcare provider to evaluate whether air can flow freely through each side of the nasal passages. When a patient holds one nostril and breathes in through the other, any obstructions, such as swelling, mucus, or structural anomalies in the nasal cavity, may become evident.

By focusing on the airflow in this manner, the examiner can determine if both nasal passages are patent (open) or if there is a potential blockage that needs further investigation. This assessment is crucial, especially in cases of nasal congestion, allergy evaluation, or after nasal trauma.

The other techniques listed would not provide the same focused assessment of airflow through the nasal passages. Coughing may signal other respiratory issues, humming is more related to evaluating vocal cord function and does not assess nasal patency directly, and drinking water pertains more to swallowing function than to airflow through the nose.