A nurse is reviewing the ultrasound report of a client who is at 31 weeks of gestation and has pre-term labor.

Which of the following findings indicates oligohydramnios?

Indomethacin is contraindicated for this client because it is a nonsteroidal anti-inflammatory drug (NSAID) that can irritate or inflame the lining of the stomach and small intestine.This can worsen the client’s peptic ulcer disease, which is a condition where open sores develop on the inner surface of the stomach or small intestine due to acid erosion.

Indomethacin can also interact with other medications that the client may be taking for pre-term labor or peptic ulcer disease.

Choice A is wrong because magnesium sulfate is not contraindicated for this client.It is a medication that can relax the smooth muscles of the uterus and prevent pre-term labor contractions.

Choice B is wrong because betamethasone is not contraindicated for this client.It is a corticosteroid that can help mature the fetal lungs and reduce the risk of respiratory distress syndrome in pre-term infants.

Choice D is wrong because terbutaline is not contraindicated for this client.

This medication will help relax my uterus and stop contractions.

Magnesium sulfate is a tocolytic, a medication used to suppress uterine contractions and delay preterm delivery.The exact mechanism through which magnesium sulfate inhibits contractions is unknown, but researchers believe it likely works by lowering calcium levels in the uterine muscles.

Choice A is wrong because magnesium sulfate is not used to prevent seizures in case of preeclampsia.

Preeclampsia is a condition characterized by high blood pressure and protein in the urine during pregnancy.Magnesium sulfate may be used to treat seizures if they occur with eclampsia, which is a severe complication of preeclampsia.

Choice B is wrong because magnesium sulfate does not help mature the baby’s lungs in case of preterm birth.

Magnesium sulfate may have some neuroprotective effects for the baby, but it does not affect lung development.Steroids are usually given to pregnant women at risk of preterm delivery to help accelerate fetal lung maturation.

Choice D is wrong because magnesium sulfate does not lower blood pressure in case it gets too high.

Magnesium sulfate may have some vasodilatory effects, but it is not used as an antihypertensive agent.Other medications, such as hydralazine or labetalol, are used to treat high blood pressure during pregnancy.