A patient has been supported by a mechanical ventilator using a heat and moisture exchanger for the last 3 days. Suctioning reveals an increase in the amount and tenacity of secretions. Which of the following actions is indicated?
a. Increase the hygroscopic condenser hu-midifier temperature.
b. Reassess the patient's secretions over the next 24 to 48 hr.
c. Replace the hygroscopic condenser hu-midifier with a new one.
d. Switch the patient to a large-volume heated humidifier.
Question 2
How often should heat and moisture exchangers be inspected and replaced?
a. At least every shift
b. When contaminated by secretions
c. At least every day
d. When condensate is visible
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