When administering magnesium sulfate to a patient in preterm labor, the recommended fluid intake should be?

The administration of magnesium sulfate in the context of preterm labor requires careful management of fluid intake to maintain maternal and fetal well-being while preventing complications associated with both preterm labor and magnesium sulfate therapy itself.

Restricting fluid intake to 1,500 to 2,400 mL per 24 hours helps to prevent hypermagnesemia, a potential side effect of magnesium sulfate. This is significant because magnesium sulfate can lead to increased water retention and, in some cases, pulmonary edema if fluid intake is not appropriately managed. By setting a reasonable fluid intake limit, healthcare providers can reduce the risk of these complications and ensure that the mother and fetus remain stable during treatment.

This fluid intake range also supports the possible need for additional intravenous fluids, should they be required to maintain adequate hydration or electrolyte balance. It strikes a balance between providing enough fluid to support maternal and fetal circulation while mitigating the risk of fluid overload and associated respiratory issues.

Other options either recommend excessive fluid intake or do not adequately control the potential risks associated with magnesium administration, which is why they are not considered appropriate in this clinical scenario.