On her first visit, a patient had a baseline hemoglobin of 13.0 gm and a hematocrit of 42.9%.She has been taking ferrous sulfate tablets and eating an iron-rich diet.She returned to the clinic at 30 weeks gestation and has a hemoglobin of 11.0 gm and a hematocrit of 36.3%.She is concerned and confused about why these lab values have gone down.
In responding, which physiological change during pregnancy should the nurse describe to the patient?

The correct answer is choice B. Test the patient’s vaginal secretions with nitrazine paper.

This is because the patient may be leaking amniotic fluid rather than urine, and nitrazine paper can help differentiate between the two by testing the pH level.Amniotic fluid is alkaline and will turn the paper blue, while urine is acidic and will turn the paper yellow.

Choice A is wrong because checking the patient’s bladder for distention will not help determine if the patient is leaking amniotic fluid or urine.

Choice C is wrong because checking the patient’s urine for glucose content will not help determine if the patient is leaking amniotic fluid or urine.

Glucose content may be elevated in patients with gestational diabetes, but this is not related to the patient’s complaint.

Choice D is wrong because obtaining a specimen of the patient’s vaginal secretions for culture will not help determine if the patient is leaking amniotic fluid or urine.

Culture may be done to check for infections, but this is not the initial action that the nurse should take.

A rubella titer of 1:33 indicates a low level of immunity to rubella, which can be dangerous for a pregnant woman and her fetus.

Rubella is a viral infection that can cause birth defects or miscarriage if contracted during pregnancy.A rubella titer of 1:10 or higher is considered protective.

Choice B is wrong because a non-reactive serologic test for syphilis (STS) means that the patient does not have syphilis, which is a bacterial infection that can also harm the fetus if untreated.

Choice C is wrong because blood type A-negative does not require further assessment unless the patient has antibodies to the Rh factor, which can cause hemolytic disease of the newborn if the fetus is Rh-positive.

This can be prevented by giving the patient Rh immunoglobulin injections during pregnancy and after delivery.

Choice D is wrong because hemoglobin 12.2 gm/dL is within the normal range for a pregnant woman, which is 11 to 14 gm/dL.

Hemoglobin is the protein in red blood cells that carries oxygen.

A low hemoglobin level can indicate anemia, which can affect the oxygen delivery to the fetus and increase the risk of preterm labor or low birth weight.