Chapter 52 and 53 Test Review Flashcards Preview

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Flashcards in Chapter 52 and 53 Test Review Deck (54)
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1

Caudal regression syndrome is commonly found in patients with what?

diabetes

2

What term defines the appearance of over lapping skull bones that indicate fetal death?

Spalding's Sign

3

What would fetal hydrops appear like under ultrasound?

extensive accumulation of fluid in fetal tissues
scalp edema
pleural effusion
pericardial effusion
ascites
polyhydramnios
thickened placenta

4

If hydrops is caused by tachycardia what would the fetal heart rate be?

a range from 200 to 240 bpm

5

If a patient of size has a baby, what would there be a more incidence of because the patient is of size?

neural tube defects
may be attributed to a deficiency in diet

6

What is caudal regression syndrome?

lack of development of the caudal spine and cord that may occur in the fetus of diabetic mother

7

Skeletal and central nervous system congenital anomalies in infants of diabetic mothers include...

caudal regression syndrome
neural tube defects excluding anencephaly
anencephaly with or without herniation of neural elements
microcephaly

8

When is it considered premature labor?

labor that begins before 37 wks

9

Monochroionic twin pregnancy during which one fetus develops without a heart or upper body, what is that condition?

Acardiac twin

10

Twin to twin transfusion

monozygotic twin pregnancy with single placenta and arteriovenous shunt within the placenta
monozygotic twins are at higher risk because of the shared placenta
twin to twin transfusion cannot exist between male/female twins

11

What is poly-oli sequence?

diamniotic pregnancy with polyhydramnios in one sac and severe oligohydramnios and smaller twin in the other sac

12

Poly-oli sequence is referred to what?

stuck twin syndrome

13

The development of conjoined twins occurs after how many day of conception?

13 days

14

Stuck twin syndrome is usually observed between what weeks?

16 to 26 weeks

15

Diamniotic/dichroionic twin pregnancy demonstrates what sonographic findings?

each fetus has their own placenta, chorion and amniotic sac

16

What one of the following demonstrated the division of one fertilized egg occurs 4-8 days after fertilization?

monochorionic, diamniotic

17

In twin to twin transfusion what is know to be true..

it exist when there is an arteriovenous shunt with the placenta.
The arterial blood of one twin is pumped into the venous system of the other twin.
The donor twin becomes anemic and growth restricted.
The twin has less blood flow through it's kidneys and urinates less, causing it to develop oligohydramnios,

The recipient twin
gets too much blood flow
may be normal or larger in size
has excess blood flow through kidneys and urinates more, causing polyhydramnios
may go into heart failure and become hydropic

18

What are the predictors of discordance and the growth of twins?

a difference in estimated fetal weight of more than 20%
a difference in BPD of 6 mm
a difference in AC of 20 mm
a difference in femur length of 5 mm

19

Most frequent cause of non-immune hydrops is what?

cardiovascular lesions

20

What are the advantages of Chorionic villi sampling (CVS)?

biopsy of the placenta to obtain a fetal karyotype
performed early in pregnancy (10-14 wks)
results are available within 1 wk
early results allow more options for parents

21

Cordocentesis is mostly common used for what procedure?

to obtain a blood sample
evaluates blood type
hematocrit
hemoglobin

22

Amniocentesis may be used for what?

obtain a sample of amniotic fluid for Rh testing
monitor the isoimmunized pregnancy with delta optical denstiy 450

23

Why do we perform amniocentesis?

relieve polyhyramnios
to predict Rh isoimmunization
document fetal lung maturity

24

Twins that arise from two separately fetilized ova are what kind?

dizygotic

25

Sonographic findings may suggest chromosomal anomalies include what?

?

26

High levels of AFP indicate what?

neural tube defects
anencephaly
open spina bifida

27

The quad screen evaluates all of the following markers...

AFP (Alpha-Fetoprotein)
hCG
unconjugated estriol
inhibin-A

28

An abnormality in the number of chromosomes is called what?

aneuploidy

29

An early noninvasive means of assessing the risk of aneuploidy is what?

nuchal fold measurement

30

Secondary to pregnancy induced hypertension of coma and serizures of a patient in the 2nd and 3rd trimester represents what?

eclampsia