Final answer:
The nurse should start intravenous fluid as the first prescribed intervention for a patient in shock.
Step-by-step explanation:
The nurse should implement b) Start intravenous fluid as the first prescribed intervention for a patient in shock with a mean arterial pressure (MAP) of 60 mm Hg and a heart rate (HR) of 110 bpm.
In circulatory shock, there is a decreased blood flow to the tissues, resulting in insufficient oxygen and nutrient supply to maintain cellular metabolism. The patient may also have a decreased blood pressure and urine output, and may appear confused or lose consciousness.
Thus, starting intravenous fluid is essential to restore adequate blood volume and perfusion to the tissues, and ultimately raise the blood pressure.