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OB 2 > OB 2 - Generalist Exam Questions > Flashcards

OB 2 - Generalist Exam Questions Flashcards

1
Q

What type of placenta gives a “shelf” appearance?

A

Circumvallate

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1
Q

What is the normal size of a placenta?

A

2-4 cm

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2
Q

What is the difference between placenta previa and low-lying placenta?

A

Previa = covering internal os
Low-lying = less than 2cm from internal os

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3
Q

What are two important risk factors for placenta accreta?

A

1) previous C-section
2) placenta previa

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4
Q

What is a common US finding with placenta accreta?

A

Multiple vascular lacunae

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5
Q

What are the two primary non-trophoblastic tumors of the placenta?

A

1) Chorioangiomas
2) Teratomas

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6
Q

Common S/S of placental abruption?

A

1) pelvic and abdominal pain
2) bleeding
3) fetal distress

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7
Q

What abnormality is the result of rupture of the amnion without rupture of the chorion?

A

ABS

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8
Q

When the placenta appears to have “grape-like vesicles”, what may be the diagnosis?

A

PMD - placenta mesenchymal dysplasia

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9
Q

Cerebellar measurements lose accuracy after which GA?

A) 20 weeks
B) 25 weeks
C) 30 weeks
D) 35 weeks

A

20 weeks

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10
Q

Epiphyseal centers won’t be identified until how many weeks?

A) 20 weeks
B) 25 weeks
C) 30 weeks
D) 35 weeks

A

30 weeks

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11
Q

What menstrual week do fetal kidneys begin to develop?

A) 4th
B) 5th
C) 6th
D) 7th

A

6th menstrual week

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12
Q

Fetal urine production begins at what week?

A) 7th
B) 8th
C) 9th
D) 10th

A

9th week

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13
Q

By how many mm do kidneys grow per week of gestation?

A) 1mm
B) 2mm
C) 3mm
D) 4mm

A

1mm/week

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14
Q

What are the anterior and posterior points of the spine in TRV?

A

Anterior = laminae

Posterior = centrum/vertebral bodies

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15
Q

What denotes an inevitable abortion?

A) low lying gestational sac
B) SCH
C) open cx
D) GS in myometrium

A

Open cx - cervical os has begun to dilate

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16
Q

A threatened miscarriage is vaginal bleeding under how many weeks?

A) <10
B) <15
C) <20
D) <25

A

<20

17
Q

SF of anembryonic pregnancy?

A

No fetal tissue or YS

18
Q

What is a fetal demise characterized as?

A

An embryo at least 5mm with no cardiac activity

19
Q

Whats another term for a missed abortion?

A

Delayed abortion - will contain RPOC within the uterus since not all tissue has been expelled

20
Q

What are the main SF of PUV?

A

Megaureter, dilated thickened bladder, hydro

21
Q

Holoprosencephaly and cyclopia are mostly associated with what genetic disorder?

A) Trisomy 21
B) Trisomy 18
C) Trisomy 13
D) Turners syndrome

A

Trisomy 13

22
Q

Echogenic kidneys are mostly associated to what abnormality?

A) Trisomy 21
B) Trisomy 18
C) Trisomy 13
D) Turners syndrome

A

Trisomy 13

23
Q

All of the following have decreased AFP except?

A) Trisomy 21
B) Trisomy 18
C) Trisomy 13
D) Turners syndrome

A

Trisomy 13

24
Q

On ultrasound, you find a unilateral CP cyst along with clinodactyly. Whats the most likely diagnosis?

A) Trisomy 21
B) Trisomy 18
C) Trisomy 13
D) Turners syndrome

A

Trisomy 18

25
Q

Cystic hygroma and fetal hydrops is associated with what abnormality?

A) Trisomy 21
B) Trisomy 18
C) Trisomy 13
D) Turners syndrome

A

Turners

26
Q

Partial molar pregnancy is associated with what genetic disorder?

A) Trisomy 21
B) Triploidy
C) Trisomy 13
D) Turners syndrome

A

Triploidy - also see syndactyly and ventriculomegaly

27
Q

In what abnormality is the only blood marker, increased AFP?

A) Trisomy 21
B) Trisomy 18
C) Trisomy 13
D) Turners syndrome

A

Trisomy 13

28
Q

Sandal toe gap is associated with what abnormality?

A) Trisomy 21
B) Trisomy 18
C) Trisomy 13
D) Turners syndrome

A

Trisomy 21

29
Q

What test is used to determine lung maturity?

A) Blood test
B) Amniocentesis
C) PUBS
D) CVS

A

Amnio

30
Q

Optimal GA for karyotyping with amniocentesis is?

A) 10-15 weeks
B) 12-16 weeks
C) 15-20 weeks
D) 18-23 weeks

A

15-20 weeks

31
Q

Performing amniocentesis earlier than how many weeks has been shown to significantly increase the risk for pregnancy loss?

A) 12 wks
B) 14 wks
C) 15 wks
D) 20 wks

A

14

32
Q

What test offers the possibility for very early prenatal diagnosis, from at least 7 weeks of gestation?

A) Amnio
B) PUBS
C) CVS
D) Coelocentesis

A

D

33
Q

When must NT tests be performed?

A

11 W - 16 W 6D

34
Q

What is the classic triad for ectopic pregnancy?

A

Pain, bleeding, palpable adnexal mass

35
Q

Where are most ectopic pregnancies located?

A

Ampullary portion of fallopian tube

36
Q

What is the most obvious indicator of an ectopic pregnancy?

A

Free fluid

37
Q

In the first trimester, what are the blood marker levels for Trisomy 21?

A

Increased HcG and NT

Decreased PAPP-A

38
Q

Fetus appears to have macrocephaly and macroglossia. Whats the most likely diagnosis?

A) BWS
B) Potters sequence
C) VACTERL
D) TORCH

A

BWS

39
Q

Meckel-Gruber is NOT associated with what?

A) Polydactyly
B) Polyhadramnios
C) Echogenic kidneys
D) Encephalocele

A

Poly - it is associated with oligo

40
Q

Potter sequence is most commonly caused by what?

A

Oligohydramnios - low amniotic fluid impairs normal development

OB 2 (20 decks)

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