Final answer:
To address sinus bradycardia and prevent fainting, the nurse should obtain and apply a transcutaneous pacemaker (TCP).
Step-by-step explanation:
Sinus bradycardia is a condition in which the resting heart rate drops below 60 beats per minute. In this case, the patient's heart rate is 32 beats per minute. Sinus bradycardia can lead to inadequate blood flow to the body's tissues and can cause symptoms such as feeling faint. Therefore, the nurse should take the action of obtaining and applying a transcutaneous pacemaker (TCP) to help regulate the patient's heart rate and ensure adequate blood flow.