The nurse is instructing a client about pursed lip breathing, and the client asks the nurse about its purpose. The nurse should tell the client that the primary purpose of pursed lip breathing is...

The nurse is instructing a client about pursed lip breathing, and the client asks the nurse about its purpose. The nurse should tell the client that the primary purpose of pursed lip breathing is which?

1. Promote oxygen intake

2. Strengthen the diaphragm

3. Strengthen the intercostal muscles

4. Promote carbon dioxide elimination