4 Flashcards

1
Q

Anasarca:

A

diffuse edema

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2
Q

Allantoic cyst:

A

cyst found within the umbilical cord

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3
Q

Are chorioangiomas benign or malignant:

A

benign

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4
Q

Circumvallate placenta:

A

an abnormally shaped placenta caused by the membranes inserting inward from the edge

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5
Q

Cotyledons

A

Groups or lobes of chorionic villi

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6
Q

Erythroblastosis fetalis:

A

a condition in which there is an incompatibility between fetal and maternal red blood cells

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7
Q

Exsanguination:

A

to bleed out

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8
Q

Neonatal period:

A

first 28 days of life

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9
Q

Non immune hydrops

A

fetal hydrops caused by congenital fetal anomalies and infections

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10
Q

Placenta accreta:

A

abnormal adherence of the placenta to the myometrium in an area where the decidua is either absent or minimal

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11
Q

Placenta increta

A

Invasion of the placenta within the myometrium

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12
Q

Placenta percreta:

A

penetration of the placenta through the uterine serosa and possibly adjacent pelvic organs

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13
Q

Preeclampsia is considered after:

A

20 weeks

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14
Q

When the shoulder of the fetus cannot pass through the birth canal

A

shoulder dystocia

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15
Q

Vernix

A

protective fetal skin covering

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16
Q

Vitelline duct:

A

the structure that connects the developing embryo to the secondary yolk sac

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17
Q

Wharton’s Jelly:

A

gelatinous material that is located within the umbilical cord around the umbilical vessels

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18
Q

In later pregnancy, the placenta produces:

A

estrogen and progesterone

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19
Q

The placenta is made up of 3 components:

A

chorionic plate, placental substance ** contains functional parts of the placenta ** and basal layer

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20
Q

What are the concerns with a circumvallate placenta?

A

vaginal bleeding and placenta abruption

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21
Q

The placenta thickness should not exceed:

A

4cm

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22
Q

Placenta previa is more likely seen in women:

A

multiparity
hx of c-section
advanced maternal age
previous abortion

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23
Q

Causes of a thick placenta:

A
diabetes
maternal anemia 
infection 
fetal hydrops
Rh isoimmunization
multiple gestation
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24
Q

Causes of a thin placenta:

A
diabetes (long standing)
IUGR
placental insufficiency 
polyhydramnios
preeclampsia
small for dates fetus
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25
If you suspect potential previa, what should you do?
Get the patient to empty the bladder and assess again
26
Vasa previa is often associated with:
velamentous cord insertion
27
A complete placental abruption often results in the development of ? Where will they be located?
retroplacental hematoma, located between the placenta and myometrium
28
What's the most common placental abruption identified w sonography?
Marginal abruption
29
Maternal conditions associated with placental abruption?
``` hypertension preeclampsia cocaine use cigarette smoking poor nutrition trauma ```
30
What are the concerns with placenta accreta?
Pt could suffer from heavy bleeding at delivery and potentially uterine rupture Pt may need an emergency hysterectomy
31
With placenta accreta, you usually what as well?
Placenta previa
32
What's the symptoms of chorioangioma?
Possible elevation of maternal AFP
33
Sonographic appearance of chorioangioma?
Hypoechoic or hyperechoic mass adjacent to the umbilical cord insertion
34
Larger chorioangiomas are associated with:
polyhydramnios, IUGR and fetal hydrops
35
What's the most common umbilical cord abnormality?
2VC
36
Marginal cord insertion aka
Battledore placenta
37
Are allantoic cysts of concern?
If unresolved, they can be linked to aneuploidy and omphaloceles. These cysts are usually seen at the fetal abdomen
38
What's the most common, but also very rare, tumor of the umbilical cord?
Hemangioma | Usually by cord insertion
39
Does the S/D increase or decrease with gestational age
Decrease
40
A higher S/D ratio is associated with?
Placental resistance, IUGR and oligohydramnios, which is associated with perinatal mortality and morbidity
41
The SDP should measure at least:
2cm
42
When TORCH is suspected, what could you likely see?
Intracranial calcifications Microcephaly Ventriculomegaly and Hepatosplenomegaly
43
IUGR is less than
10th percentile
44
Large for dates is
above 90th percentile
45
What's the best indicator of IUGR?
Abdo circumference
46
Causes of symmetric IUGR:
fetal insult -- infection | genetic disorders, congenital malformations, syndromes
47
Causes of asymmetric IUGR:
Placental insufficiency -- most common risk factor is hypertension Oxygen deficiency
48
Maternal risk factor for macrosomia?
Diabetes
49
Cx length should be at least?
3cm (penny) | or is it 2.5cm?
50
Immune hydrops occurs when the mother has Rh _______ blood, and the fetus has Rh ________- blood
negative | positive (fetus)
51
When and what do they give for immune hydrops?
RhoGAM at 28wks via intrauterine transfusion of RBC's
52
Causes of non-immune hydrops"
``` chorioangioma CCAM diaphragmatic hernia fetal anemia fetal infection structural anomalies chromosomal abnormalities (13, 18, 21, turner's) ```
53
Those at risk for preeclampsia are:
diabetics and those with a hx of gestational trophoblastic disease
54
Sonographic findings of someone with preeclampisa?
``` IUGR oligohydramnios GTD placental abruption or an elevated S/D ratio ```
55
Mother's with pregestational diabetes have a higher risk of:
miscarriage and toxemia the fetus has a higher risk of congenital anomalies, hypoglycemia, respiratory distress and most commonly, cardiac defects, NT defects, sirenomelia, renal abnormalities and caudal regression syndrome
56
Bladder flap hematoma's appear as:
Complex mass greater than 2cm | Located adjacent to the c-sect scar
57
What are the sonogrpahic findings of RPOC?
Color flow in an echogenic mass with endo fluid and endo measuring >10mm Pt's will have PP bleeding and this is treated by D&C
58
All of the following are associated with thin placentas except: preeclampsia, IUGR, fetal hydrops and long standing diabetes
fetal hydrops
59
All of the following are associated with a thick placenta except: fetal infection, Rh isoimmunization, placental insuffiency and multiple gestations
placental insufficiency
60
Placenta accreta:
abnormal attachment of the placenta to the myometrium