问题
单项选择题
The nurse is caring for a primigravida who is scheduled for a fetal acoustic stimulation test (FAST). The nurse should explain to the client that the primary purpose of this test is to
A．induce contractions.
B．induce fetal heart rate accelerations.
C．shorten the contraction stress test.
D．determine fluid volume.
答案
参考答案：B
解析：The FAST is being used more commonly. This noninvasive technique induces fetal heart rate accelerations by using low-frequency vibrations on the maternal abdomen over the fetal head. It can shorten the length of the nonstress test. The FAST isn't used to induce contractions, shorten the length of the contraction stress test, or determine fluid volume.