When a client reports using cocaine during her current pregnancy, which laboratory study should a nurse anticipate?

The correct answer is choice C. Auscultate the fetal heart sounds.This is because spontaneous rupture of membranes (SROM) may be associated with fetal distress or cord prolapse, and the nurse should assess the fetal well-being as soon as possible.Fetal heart sounds can indicate the presence of fetal bradycardia, tachycardia, or decelerations, which may require immediate intervention.

Choice A is wrong because checking the specific gravity of the amniotic fluid is not a priority action after SROM.The specific gravity can help differentiate amniotic fluid from urine, but it is not as reliable as other methods such as nitrazine paper test or visual inspection.

Choice B is wrong because providing dry linens for the patient is a comfort measure, but not a priority action after SROM.The nurse should first ensure the safety of the fetus and the mother before attending to their comfort needs.

Choice D is wrong because notifying the health care provider is an important action after SROM, but not the first one.The nurse should gather relevant data such as fetal heart rate, maternal vital signs, and characteristics of the fluid before contacting the provider.

The correct answer is choice B: The risk of transplacental transmission of chlamydia between mother and baby is low.This means that the infection is unlikely to pass from the mother’s blood to the baby’s blood through the placenta.However, this does not mean that the infection is harmless for the baby.

Choice A is wrong because transmission of chlamydia usually occurs when the baby passes through the vagina.This can cause eye infections or pneumonia in the newborn.

Choice C is wrong because the baby has probably not developed antibodies to the chlamydia in utero.Antibodies are proteins that help fight infections, and they are usually passed from the mother to the baby through the placenta.However, chlamydia does not stimulate a strong antibody response in the mother, so there is little protection for the baby.

Choice D is wrong because the baby will not receive systemic treatment at birth to prevent a chlamydia infection.Systemic treatment means medication that affects the whole body, such as oral or intravenous antibiotics.The baby will only receive topical treatment, such as eye drops or ointment, to prevent eye infections.Normal ranges: Chlamydia infection is common among pregnant women, especially those under 25 years old or with risk factors such as multiple or new sexual partners.The prevalence of chlamydia among pregnant women in the United States ranges from 1% to 40%, depending on the population and screening methods.Chlamydia infection can be diagnosed by urine or swab tests, and treated with antibiotics such as azithromycin or doxycycline.Chlamydia screening is recommended for all pregnant women at their first prenatal visit and again in the third trimester if they are at high risk.