Fetal and Maternal Doppler Evaluation

Question 1

how do you figure out standard deviation

Answer 1

PSV/EDV

Question 2

how do you figure out RI

Answer 2

PSV-EDV/PSV

Question 3

how do you figure out PI

Answer 3

PSV- EDV/ mean flow velocity

Question 4

PI describes what

Answer 4

variation of arterial flow during a single cardiac cycle

Question 5

the circle of willis is useful for evaluating a fetus with ____

Answer 5

suspected hypoxia and IUGR

Question 6

what is the most common doppler method for diagnosing fetal anemia

Answer 6

circle of willis

Question 7

in the first trimester the MCA should have what kind of waveform

Answer 7

high resistive with little to no antegrade diastolic flow

Question 8

in the 2nd and 3rd trimester the MCA should have what kind of waveform

Answer 8

low resistance with some antegrade diastolic flow

Question 9

normal ductus venosus waveform

Answer 9

higher velocity

Question 10

normal uterine artery waveform in the first trimester

Answer 10

low resistance

Question 11

normal uterine artery waveform in the 2nd and 3rd trimester

Answer 11

lower resistance with increased diastolic flow

Question 12

increased resistance in the uterine arteries leads to an increased risk for what

Answer 12

• IUGR

- preclampsia

Question 13

umbilical artery flow is evaluated to look for signs of what

Answer 13

placental insufficiency

Question 14

what happens to the umbilical artery with IUGR

Answer 14

increased resistance to flow causing decreased or absent diastolic flow