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OB GYN Radio > Ob > Flashcards

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
Q

FL measurement of

A

Ossified portion of the femural diaphysis

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26
Q

IUGR

A

Below 5th percentile

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27
Q

Oligohydramnios

A
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28
Q

Biophysical profile parameters

A

HR
Respiratory activity
Gross motor movement
Fetal tone

29
Q

MCA carries %? Of cerebral bloos flow

A

> 80

30
Q

Fetal macrosomia

A

> 90 percentile

4000g

31
Q

Sono appearance

Thin, broken echogenic line

A

Menstrual phase

32
Q

Hypoechoic thickening on sono

4-8 mm

A

Proliferative phase

33
Q

Triple layer on sono

6-10mm

A

Preovulatory phase

34
Q

Hyperechoic thickening

7-14mm

A

Secretory phase

35
Q

MC solid pelvic masses during pregnancy

A

Leiomyomas

36
Q

MC cystic pelvic masses in pregnancy

A

Corpus luteal cysts

37
Q

Normal placenta is first apparent on utz at

A

8weeks

38
Q

Subchorionic hemorrhage

A

Marginal abruption

39
Q

Retroplacental hemorrhage

A

Central abruption

40
Q

Abnormal edherence of the placenta t the uterine wall

A

Placenta accreta

41
Q

Invasion of uterine wall

A

Placenta increta

42
Q

Penetration of uterine wall

A

Placenta percreta

43
Q

MC common tumor of the placenta

A

Chorioangioma

44
Q

Polyhydramnios afi of

A

> 20cm

45
Q

Oligohydramnios afi

A
46
Q

Nuchal translucency

A

2.5-3 mm

47
Q

In 2nd tri nuchal translucency more tha ______ is abnormal

A

> _ 6mm

48
Q

MC chromosome abnormality

A

Trisomy 21

49
Q

MC neural tube defect

A

Anencephaly

50
Q

Bossing of the frontal bones in axial plane

A

Lemon sign

51
Q

Compression of cerebellar gemispheres

A

Banana sign

52
Q

MC solid pelvic masses during pregnancy

A

Leiomyomas

53
Q

MC cystic pelvic masses in pregnancy

A

Corpus luteal cysts

54
Q

Normal placenta is first apparent on utz at

A

8weeks

55
Q

Subchorionic hemorrhage

A

Marginal abruption

56
Q

Retroplacental hemorrhage

A

Central abruption

57
Q

Abnormal edherence of the placenta t the uterine wall

A

Placenta accreta

58
Q

Invasion of uterine wall

A

Placenta increta

59
Q

Penetration of uterine wall

A

Placenta percreta

60
Q

MC common tumor of the placenta

A

Chorioangioma

61
Q

Polyhydramnios afi of

A

> 20cm

62
Q

Oligohydramnios afi

A
63
Q

Nuchal translucency

A

2.5-3 mm

64
Q

In 2nd tri nuchal translucency more tha ______ is abnormal

A

> _ 6mm

65
Q

MC chromosome abnormality

A

Trisomy 21

66
Q

MC neural tube defect

A

Anencephaly

67
Q

Bossing of the frontal bones in axial plane

A

Lemon sign

68
Q

Compression of cerebellar gemispheres

A

Banana sign

OB GYN Radio (4 decks)

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