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OB-Hagen > Final OB Q4 T1 > Flashcards

Final OB Q4 T1 Flashcards

1
Q

The cerebral spinal fluid travels from the lateral ventricles to the third ventricle via what structure?

A

Foramen of Monro

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2
Q

Is Nuchal skin fold measurement used to confirm gestational age?

A

No

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3
Q

The third ventricle communicates with the fourth ventricle at the

A

Aqueduct of Silvius

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4
Q

Parameters of a BPP

A
  • fetal tone
  • gross movements
  • fetal breathing
  • amniotic fluid volume
  • non stress test
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5
Q

The size of the sister in a magna is obtained by measuring from the _____ to the ______

A

Vermis to the occipital bone

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6
Q

The Cisterna magna should not exceed _____ in the transcerebral plane

A

10mm

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7
Q

The abdominal circumference should not include

A

The kidneys

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8
Q

A normal cervix in pregnancy should measure at least ____ in length

A

3cm

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9
Q

The placenta of the macrosomic fetus can become significantly ______

A

Large

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10
Q

Predictors of discordance in the growth of twins include

A

Difference in abdominal circumference of 20 mm or greater

Difference in estimated fetal weight greater than 20%

Difference in femur length by 5 mm or greater

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11
Q

The presentation of a fetus lying perpendicular to the maternal sagittal access is in the _____ position

A

Transverse

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12
Q

For the normal biophysical profile and the amniotic fluid pocket should measure

A

At least 1 cm in two perpendicular planes

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13
Q

Poly-Oli sequence is also known as

A

Stuck twin syndrome

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14
Q

In fetal circulation, oxygenated blood enters the fetal abdomen by the umbilical vein and then it flows directly to the IVC via the _____

A

Ductus venosus

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15
Q

In fetal circulation, from the right ventricle, the blood courses from the pulmonary artery into the ______ and then through the ascending a order to provide oxygenated blood

A

Ductus arteriosis

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16
Q

The Cavum septum pellucidi is observed anterior to the

A

Thalamus

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17
Q

The structure located between the two lobes of the cerebellum

A

Cerebellar vermis

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18
Q

The measurement obtained between the lateral walls of the Orbits is referred to as

A

Binocular diameter

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19
Q

The fetal kidneys are most commonly located

A

Adjacent to the fetal spine

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20
Q

One of the growth problems seen in the fetus of a diabetic mother

A

Macrosomia

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21
Q

Term used for a monochorionic twin pregnancy in which one fetus develops without a heart or upper body

A

Acardiac anomaly

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22
Q

The FL:AC ratio is or isn’t a good positive predictive value of IUGR

A

Is not

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23
Q

Twins that arise from two separately fertilized ova

A

Dizygotic

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24
Q

The profile view of the fetal face is important to examine to rule out

A

Frontal bossing
micrognathia
Cephalocele

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25
Q

IUGR Is most commonly defined as an estimated fetal weight under _____ for a given gestational age

A

At or below the 10th percentile

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26
Q

macrosomia is defined as an estimated fetal weight(EFW) or birth weight of the above _______

A

The 90th percentile for gestational age

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27
Q

The single most useful biometric parameter to assess fetal growth:

A

AC

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28
Q

Aqueductal stenosis will lead to a build up of CSF in

A

Lateral ventricles

3rd ventricle

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29
Q

Measurement of the BPD is taken from the ______edge to the ______

A

Outer edge to inner edge

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30
Q

Asymmetric IUGR is usually caused by

A

Placental insufficiency

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31
Q

Beyond 30 weeks of gestation, a renal pelvis is considered abnormal when measuring greater than

A

10mm

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32
Q

The measurement that should be carefully scrutinized in cases of IUGR

A

AC

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33
Q

And S/D ratio of the umbilical artery can be used to evaluate fetal well-being when?

A

After 30 weeks

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34
Q

The BPD is the measurement of the fetal head at the level of the

A

Thalamus and CSP

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35
Q

BPP scoring is conducted for:

A

30 minutes

36
Q

An abnormally small chin is termed:

A

Micrognathia

37
Q

The fourth ventricle is located _____ to the cerebellar vermis

A

Anterior

38
Q

Group of conditions in which hydrops is present in the fetus but isn’t a result of fetal maternal blood group incompatibility

A

Nonimmune hydrops

39
Q

Sonographic findings of fetal hydrops in a isoimmunized pregnancy includes:

A
  • pleural effusion
  • polyhydramnios
  • pericardial effusion
  • thickening placenta
40
Q

The 3rd ventricle is located:

A

Between the two lobes of the thalamus

41
Q

Premature labor is defined as the onset of labor before ___ weeks

A

37 weeks

42
Q

An increased incidence of morbidity and mortality as the result of head and shoulder injuries is found in:

A

Macrosomic fetus

43
Q

Macroglossia is commonly found with

A

Beckwith-Wiedemann syndrome

44
Q

The normal atrium of the lateral ventricle should measure less than ___

A

10mm

45
Q

Organ most severely affected by IUGR

A

Liver

46
Q

Fetal anatomy may be assessed accurately after

A

18 weeks

47
Q

Twins having 2 placentas and one amniotic sac are referred to as:

A

This doesn’t occur

48
Q

Overlapping skull bones

A

Spalding sign

49
Q

Located on both sides of the midline (brain)

A

Lateral ventricles

50
Q

Is nonimmune hydrops associated with Rh isoimmunization?

A

No

51
Q

The thickness of the Nuchal fold in the second trimester should not exceed

A

6mm

52
Q

Especially in the 3rd trimester, a fetus in the breech position may demonstrate a cranium shape of:

A

Dolichocephalic

53
Q

Fetal presentation is determined by identifying the fetal part that is closest to the:

A

Internal os of cervix

54
Q

When fetal death occurs after the fetus has reached a certain size that is too large to resorb into the uterus, it appears as what?

A

Fetus papyraceous or paper doll syndrome

55
Q

The plane used for a HC should include

A

Thalamus and CSP

56
Q

If division of one fertilized egg occurs 4-8 days after fertilization:

A

One chorion and two amnions

57
Q

Which drug is given to the Rh-negative mother to protect against isoimmunization

A

RhoGAM

58
Q

You are scanning a twin gestation and one twin has fetal hydrops while the other is small for gestational age. What condition should be expected?

A

Twin-to-twin transfusion syndrome

59
Q

Maternal obesity has been associated with an increased incidence of which anomaly

A

Neural tube defects

60
Q

What measurement incorporates several fetal growth parameters such as BPD, HC, AC, and FL

A

Estimated fetal weight

61
Q

A condition in which the fetus is not growing at normal rates is:

A

IUGR

62
Q

An unusual protuberance of the tongue is:

A

Macroglossia

63
Q

Caudal regression syndrome is most commonly found in patients with

A

Diabetes

64
Q

Systemic IUGR is usually the result of

A

Fist trimester insult

65
Q

Conjoined twins that are joined at the abdomen

A

Omphalopagus

66
Q

Assess of the fetus to determine fetal well-being, including cardiac non-stress test, fetal breathing, gross body movement, fetal tone, and amniotic fluid volume:

A

BPP

67
Q

Dilation of the entire ventricular system, including the 4th ventricle, is associated with:

A

Spinal defects

68
Q

All long bones should be measured if the difference between the femur length and all other biometric parameters is:

A

2 weeks or greater

69
Q

Most useful biometric measurement to use as a growth parameter

A

AC

70
Q

Doppler assessment of the middle-cerebral artery(MCA) can:

A

Evaluate the fetus for hypoxia

71
Q

Significant maternal risk factors for IUGR include all except:

A) tobacco use
B) significant placental hemorrhage
C) severe hypotension

A

Severe hypotension

72
Q

Fetal liver: the right lobe is _____ than the left lobe

A

Smaller

73
Q

Hypertensive pregnancies may be associated with:

A

Small placentas

74
Q

Twins that have the threat of being conjoined:

A

Monochorionic and monoamniotic

75
Q

Normally, the apex of the heart is toward the ____

A

Left

76
Q

Pregnancy complication that is characterized by hypertension, proteinuria, and edema

A

Preeclampsia

77
Q

Diamniotic and dichorionic twins have how many gestational sacs and placentas?

A

2 of both

78
Q

In fetuses with asymmetric IUGR, vascular resistance:

A

Increases in umbilical artery and aorta, and decreases is the MCA

79
Q

The development of conjoined twins occurs when the division of the egg occurs after ____

A

13 days

80
Q

Because of the low-density brain tissue, the texture of the brain may appear:

A

Hypoechoic

81
Q

Secondary to pregnancy induced hypertension, the occurence of a coma or seizures in the 2/3 trimesters

A

Eclampsia

82
Q

Femur length measurement only includes:

A

Femoral diaphysis from end to end

83
Q

Cord entanglement is most often seen in

A

Mono/mono pregnancies

84
Q

Most frequent cause of nonimmune hydrops

A

Cardiovascular lesions

85
Q

Clinical observations for IUGR include:

A

Grade 3 placenta before 36 weeks

Decreased motion

Decreased placental thickness

86
Q

Two widest transverse diameter of the skull and the proper level to measure to BPD includes what structure:

A

Thalamus

87
Q

Fetal measurement that is just about as accurate as the BPD in determining gestational age

A

FL

OB-Hagen (17 decks)

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