Lecture 10 - Vascular changes in pregnancy

Question 1

Key loci of maternal vascular control of blood supply to the placenta

Answer 1

Spiral, radial, uterine, and arcuate arteries

As these arteries get smaller and reach all areas of the placenta, they become coiled - coiled arteries

Question 2

Doppler ultrasonography: what is it and what does it do?

Answer 2

?

Measures flow in the umbilical or uterine artery

Question 3

Uterine artery doppler

Answer 3

FTM:
High peak, notch then diastole

STM:
Same peak, higher notch and diastole

TTM:
Lower peak, increased diastole flow (no notch)

Question 4

Increase in blood flow to the uterus

Answer 4

Caused by the uterine artery

Estrogen - estrone, estradiol, estriol (E1, E2, E3)

Question 5

Arcuate and radial arteries