The nurse is completing A.M. care with a client diagnosed with angina when the client complains of chest pain. The client has a saline lock in the right forearm. Which intervention should the nurse at...

The nurse is completing A.M. care with a client diagnosed with angina when the client complains of chest pain. The client has a saline lock in the right forearm. Which intervention should the nurse at the bedside implement first?

1. Assess the client’s vital signs.

2. Administer sublingual nitroglycerin (NTG).

3. Administer intravenous morphine sulfate (MS) via saline lock.

4. Administer oxygen via nasal cannula.