What is the recommended action if a pregnant patient exhibits signs of magnesium sulfate toxicity?

The recommended action in the event of magnesium sulfate toxicity is to administer calcium gluconate. Magnesium sulfate is often used in obstetric management, particularly for conditions like preeclampsia or eclampsia, but can lead to toxicity when levels become too high. Signs of magnesium toxicity include respiratory depression, decreased deep tendon reflexes, and hypotension.

Calcium gluconate acts as an antidote for magnesium toxicity because it can help stabilize the neuromuscular and cardiovascular systems affected by excess magnesium. It essentially counteracts the effects of magnesium on the body, particularly on cardiac and muscular function. Timely administration of calcium gluconate is crucial to prevent severe complications, including respiratory distress or cardiac arrest.

The other options do not appropriately address the safety and well-being of the patient. Increasing the dose of magnesium would further exacerbate the toxicity, continuing with the current administration may lead to worsening conditions, and switching to a different medication without addressing the underlying toxicity would not be effective. Therefore, administering calcium gluconate is the best course of action in this scenario.