Of the following instructions, which is most important for the nurse to teach the client to help loosen secretions and increase comfort during medical treatment for sinusitis? 1. Engage in normal...

Of the following instructions, which is most important for the nurse to teach the client to help loosen secretions and increase comfort during medical treatment for sinusitis?

1. Engage in normal activity.

2. Elevate the head of the bed by 45 degrees.

3. Increase fluid intake.

4. Blow the nose frequently.