Final answer:
If a patient on magnesium sulfate has a respiratory rate below 12, the correct action is to discontinue the medication.
Step-by-step explanation:
If a patient is on magnesium sulfate and their respiratory rate (RR) drops below 12 breaths per minute, the correct action is to discontinue magnesium sulfate. This is because a drop in respiratory rate indicates respiratory depression, which is a serious side effect of magnesium sulfate. Continuing the medication in this scenario can further depress the respiratory system, leading to potentially life-threatening complications.
It is important to closely monitor respiratory rate when a patient is on magnesium sulfate, as this medication is known to affect breathing. If the respiratory rate drops below a safe level, it is crucial to discontinue the medication and provide appropriate medical intervention.