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OBGYN 3 Exam 1 > Fetal face and neck > Flashcards

Fetal face and neck Flashcards

1
Q

BOD

A

bi ocular diameter

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2
Q

OOD

A

outer orbital diameter

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3
Q

IOD

A

internal orbital diameter

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4
Q

hypertelorism associated w/

A

median cleft
craniosynotosis

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5
Q

what is hypertelorism

A

large distance between the eyes

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6
Q

hypotelorism asso. w/

A

meckel gruber
microcephaly

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7
Q

what is hypotelorism

A

small distance between the eyes

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8
Q

fetal cataracts

A

increased echogenicity

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9
Q

what is fetal proboscis

A
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10
Q

which trisomy is a small or absent nasal bone associated w/

A

trisomy 21

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11
Q

what is micrognathia

A

small chin

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12
Q

what is a cleft lip or palate?

A

slit like opening
uni/bilat/ or median
common

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13
Q

what is a cystic hygroma?

A

lymphatic fluid filled sac posterior lateral to the neck

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14
Q

what trisomy is cystic hygroma assoc. w/

A

13 or turners syndrome

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15
Q

classic sign of cystic hygroma on sono

A

sac located in the post. cervical region with a thick midline septum

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16
Q

differential diagnosis for cystic hygroma

A

cervical meningocele, subcotaneous edema

17
Q

other fluid build up assoc. w/ cystic hygroma

A
18
Q

what is GOITER

A

large thyroid

19
Q

how can goiter effect amniotic fluid

A

polyhydramnios
fetus cannot swallow

20
Q

when in the pregnancy is a nuchal fold measured

A

18 - 22 weeks

21
Q

what is a large nuchal fold a soft marker for

A

congenital heart disease
tri 21

22
Q

proposed etiology for nuchal fold

A

hydrops or lymphatic obstruction

23
Q

normal measurement for nuchal fold

A

less than 6mm

24
Q

where should you place your calipers for a nuchal fold

A

outer edge of occiputal bone to skin surface

25
Q

normal cephalic index

A

75-85

26
Q

less than 75 cephalic index indicates

A

dolichocephaly

27
Q

greater than 85 cephalic index indicates

A

brachycephaly

28
Q

key things your ruling out at the transventricular view

A

anencephaly
ventricularmegaly
holoprosencephaly
encephalocele

OBGYN 3 Exam 1 (4 decks)

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