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Ob Flashcards

1
Q

Tiny cystic structure implanted within the echogenic decidua

A

Intradecidual sign

3.5- 4.5 wks

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2
Q

Visualization of 3 layers of decidua

A

Double de idual sign

> 5 wks

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3
Q

Echogenic decidua thickness

A

> 2mm

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4
Q

Growth in MSD

A

1.2 mm/day

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5
Q

Embryo transabdominal utz

A

MSD >20mm

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6
Q

Embryo transV utz

A

MSD > 8mm

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7
Q

Connects yolk sac to embryo

A

Vitelline duct

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8
Q

Earliest site of blood cell formation in the embryo

A

Yolk sac

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9
Q

Earliest demonstration of the embryo

A

Double bleb sign

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10
Q

Cyst in ovary surrounded by ring of fire

A

Corpus luteum

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11
Q

Rhomboencephalon

A

6-8 weeks

Normal structures in posterior fossa

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12
Q

Yolk sac is between

A

5 and 12wks

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13
Q

Pregnancy in wch the embryo has died and is no longer visible

A

Anembryonic or blighted pregnancy

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14
Q

Empty gestational sac

A

Very early intrauterine pregnancy

Nonviable intrauterine pregnancy/ anembryonic pregnancy

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15
Q

Pseudogestational sac associated with

A

Ectopic pregnancy

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16
Q

Abnormal gestational sac development

A
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17
Q

In transV, cardiac activity is seen in ebryos as small as

A

1.5 mm CRL

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18
Q

MC location of ectopic pregnancy

A

Isthmus of fallopian tube

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19
Q

Highly aggresive malignancy that forms only trophoblasts

A

Choriocarcinoma

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20
Q

Estimate GA without embryo

A

Gestational sac

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21
Q

Estimate GA in first tri with embryo

A

CRL

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22
Q

Measured on acial view at the level of 3rd ventricle and thalamus

A

BPD

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23
Q

HC measured same as

A

BPD

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24
Q

AC measured at the level of

A

Intrahepatic portion of the umbilical vein

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25
FL measurement of
Ossified portion of the femural diaphysis
26
IUGR
Below 5th percentile
27
Oligohydramnios
28
Biophysical profile parameters
HR Respiratory activity Gross motor movement Fetal tone
29
MCA carries %? Of cerebral bloos flow
>80
30
Fetal macrosomia
>90 percentile 4000g
31
Sono appearance Thin, broken echogenic line
Menstrual phase
32
Hypoechoic thickening on sono 4-8 mm
Proliferative phase
33
Triple layer on sono 6-10mm
Preovulatory phase
34
Hyperechoic thickening 7-14mm
Secretory phase
35
MC solid pelvic masses during pregnancy
Leiomyomas
36
MC cystic pelvic masses in pregnancy
Corpus luteal cysts
37
Normal placenta is first apparent on utz at
8weeks
38
Subchorionic hemorrhage
Marginal abruption
39
Retroplacental hemorrhage
Central abruption
40
Abnormal edherence of the placenta t the uterine wall
Placenta accreta
41
Invasion of uterine wall
Placenta increta
42
Penetration of uterine wall
Placenta percreta
43
MC common tumor of the placenta
Chorioangioma
44
Polyhydramnios afi of
>20cm
45
Oligohydramnios afi
46
Nuchal translucency
2.5-3 mm
47
In 2nd tri nuchal translucency more tha ______ is abnormal
>_ 6mm
48
MC chromosome abnormality
Trisomy 21
49
MC neural tube defect
Anencephaly
50
Bossing of the frontal bones in axial plane
Lemon sign
51
Compression of cerebellar gemispheres
Banana sign
52
MC solid pelvic masses during pregnancy
Leiomyomas
53
MC cystic pelvic masses in pregnancy
Corpus luteal cysts
54
Normal placenta is first apparent on utz at
8weeks
55
Subchorionic hemorrhage
Marginal abruption
56
Retroplacental hemorrhage
Central abruption
57
Abnormal edherence of the placenta t the uterine wall
Placenta accreta
58
Invasion of uterine wall
Placenta increta
59
Penetration of uterine wall
Placenta percreta
60
MC common tumor of the placenta
Chorioangioma
61
Polyhydramnios afi of
>20cm
62
Oligohydramnios afi
63
Nuchal translucency
2.5-3 mm
64
In 2nd tri nuchal translucency more tha ______ is abnormal
>_ 6mm
65
MC chromosome abnormality
Trisomy 21
66
MC neural tube defect
Anencephaly
67
Bossing of the frontal bones in axial plane
Lemon sign
68
Compression of cerebellar gemispheres
Banana sign

OB GYN Radio (4 decks)

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