OB 510

When should doppler use be avoided?

Used for obstetrical doppler are: (5)

What are the 2 basic types of doppler us?

With increasing GA there is a __________________ in the S/D ratio.

How do you calculate Resistive Index?

How do you calculate PI?

As the vascular resistance increases what happens to the:
S/D?
PI?

What happens to the PI as the GA increases?

In normal pregnancies, the umbilical vein venous flow is _________________.
____________ velocity.
_____________ during fetal breathing.

Some factors related to reduced blood flow to placenta: (4)

What would happen to diastolic velocity if placental resistance increased?

How is the resistance arrangement when IUGR head sparing occurs?

Which fetal vessel is studied the most extensively?

The umbilical artery has ______________ resistance flow.

Increase in fetal HR causes ______________ in pulsatility.

Umbilical Artery: S/D ratio <3.0 is normal? T/F
True False

Umbilical Artery:
Normal RI=?

Risks associated with abnormal S/D ratio include:

When assessing umbilical artery you should locate a spot close to fetal abdomen/placenta?

___________ or ___________ of diastolic flow is a significant finding and indicates placental ____________.

Elevated S/D ratios are associated with: (3)

Fetal doppler of MCA is used to detect "________ _______ ______"

MCA has _______ cerebral blood flow and little diastolic flow

MCA PI = ?

MCA acronym HABS stands for

Which are the highest velocities found in fetal cardiovascular system?

Maternal uterine artery gives off branches near ?
Runs?

When do you sample MUA?

After 12 weeks the MUA has a ____________resistance flow pattern

What is an abnormal S/D ratio of MUA?

MUA normal PI? RI ?

What may be one of the earliest signs of IUGR especially if there is maternal HTN?

Umbilical artery & vein reflect changes in the _______________ vascular bed.

How many weeks before fetus appears to be in trouble may doppler parameters become abnormal?

Studies have shown that ___________________ as part of the OB management has resulted in a reduction of emergency c-sections?

In severe PIH doppler studies correlate well with _______ ______.

You can see doppler changes 24hrs before/after nonstress test?

In discordant twins, doppler has/has not proven to be more useful than EFW.

With cardiac anomalies, doppler can gage systolic function by measuring: (3)

Smoking can increase maternal HR and BP therefore increasing fetal ____________ and _____________blood flow

Doppler of umbilical artery that is suggestive of distress or compromise would be?