A nurse is explaining the purpose of a Doppler ultrasound blood flow analysis to a client who has intrauterine growth restriction (IUGR).

The nurse should inform the client that this test measures which of the following?

The level of AFP in a pregnant woman’s blood depends on how far along she is in her pregnancy.

AFP levels are normally high in the early weeks of pregnancy and then decline as the pregnancy progresses.

If the AFP level is too high or too low for the gestational age, it may indicate a problem with the baby’s development.

Choice A is wrong because maternal weight does not affect AFP levels.

Choice B is wrong because fetal heart rate does not affect AFP levels.

Choice D is wrong because the placental function does not affect AFP levels directly, but it may affect the levels of other hormones that are measured along with AFP in a quad screen.

Each of the five variables in a biophysical profile (BPP) is assigned a score of either 0 or 2 points, depending on whether it meets the criteria or not.

The five variables are:

Fetal breathing: 2 points if there is at least one episode of rhythmic breathing lasting at least 30 seconds within 30 minutes, 0 points otherwise.

Fetal movement: 2 points if there are at least three discrete body or limb movements within 30 minutes, 0 points otherwise.

Fetal tone: 2 points if there is at least one episode of extremity extension and subsequent return to flexion, 0 points otherwise.

Amniotic fluid volume: 2 points if there is a pocket of amniotic fluid measuring at least 2 cm in two perpendicular planes, 0 points otherwise.

Nonstress test: 2 points if there are at least two accelerations of fetal heart rate with or without fetal movement within 20 minutes, 0 points otherwise.

Choice A is wrong because each variable can have a score of either 0 or 2, not 0 or.

Choice C is wrong because there is no score of 1 for any variable.

Choice D is wrong because it is incomplete and does not provide the full range of possible scores.