Doppler Flashcards
1
Q
Which type of doppler adds more energy?
A
Pulsed
2
Q
Why do diastolic velocities increase as term approaches?
A
Decreased placental resistance (larger placental vessels)
3
Q
When does the RI become 1?
A
When the diastolic flow is zero
4
Q
Where should the sample be taken when doing doppler of the umbilical arteries?
A
Mid cord
5
Q
What are abnormal findings in the UAs?
A
Decreased or absent diastolic flow
Reversed diastolic flow is ++bad sign
6
Q
How is MCA doppler used in IUGR?
A
It assesses the brain-sparing effect with IUGR (increased diastolic flow will be present)
7
Q
What is Virchow’s triad?
A
- Hypercoagulability (in pregnancy)
- Venous stasis
- Vessel damage (due to uterus expanding)
