How does pursed lip breathing assist patients with asthma during an attack?
a. It distracts the patient with breathing technique to reduce anxiety.
b. It gets rid of CO2 faster.
c. It opens bronchioles by backflow air pressure.
d. It increases PACO2..
ANS: C
The resistance or the expiration through the pursed lips causes a backflow of air and helps to open the bronchioles.
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