A client's diagnosis of cystic fibrosis was made 13 years ago, and he/she has since been hospitalized several times. On the latest admission, the client has labored respirations, fatigue,...

A client's diagnosis of cystic fibrosis was made 13 years ago, and he/she has since been hospitalized several times. On the latest admission, the client has labored respirations, fatigue, malnutrition, and failure to thrive. Which nursing actions are most important initially?

1. Placing the client on bed rest and prescribing a blood gas analysis.

2. Prescribing a high-calorie, high-protein, low-fat, vitamin-enriched diet and pancreatic granules.

3. Applying an oximeter and initiating respiratory therapy.

4. Inserting an IV line and initiating antibiotic therapy.