Chapter 22 Obsteric Sonography Review Flashcards

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1
Q

_____is also referred to as trisomy 13?

A

Patau syndrome

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2
Q

_____would be least likely associated with an elevation in MSAFP?

A

Turner syndrome

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3
Q

_____artifacts is caused by attenuation of the sound beam?

A

Posterior shadowing

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4
Q

_____artifact is produced when the sound beam is barely attenuated through a fluid or a fluid-containing structure?

A

Acoustic enhancement

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5
Q

The abdominal circumference should include:

A
  • Fetal stomach
  • Fetal thoracic spine
  • The umbilical vein
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6
Q

_______describe the optimal instance to take the femur length measurement?

A

When the long axis of the femoral shaft is perpendicular to the sound beam

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7
Q

The protein that is produced by the yolk sac, fetal gastrointestinal tract, and the fetal liver is:

A

Alpha-fetoprotein

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8
Q

The physiologic ovarian cyst that develops after ovulation has occurred is the:

A

Corpus luteum cyst

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9
Q

The dilation of the renal collecting system secondary to the obstruction of normal urine flow defines:

A

Hydronephrosis

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10
Q

The triple screen typically includes an analysis of:

A

*hCG
*Alpha-fetoprotein
*Estriol

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11
Q

_______would not typically produce an elevation in hCG?

A

Anembryonic pregnancy

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12
Q

What is the fetal buttocks are closest to the cervix?

A

Frank breech

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13
Q

Biophysical profile scoring is conducted for how long:

A

For 30 minutes

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14
Q

Something that is idiopathic is said to be:

A

From an unknown cause

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15
Q

What form of fetal presentation is the most common?

A

Cephalic

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16
Q

The premature separation of the placenta from the uterine wall before the birth of the fetus describes:

A

Placental abruption

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17
Q

The anechoic space along the posterior aspect of the fetal neck is the:

A

Nuchal translucency

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18
Q

A myelomeningocele is associated with:

A

Spina bifida

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19
Q

______are produced by the placenta :

A

*hCG
*PAPP-A
*Inhibin A

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20
Q

______would be decreased in the presence of Edwards syndrome

A
  • Estriol
  • hCG
  • Alpha-fetoprotein
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21
Q

What is observed during a biophysical profile:

A

*Fetal tone
*Thoracic movement
*Fetal breathing

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22
Q

Painless second-trimester vaginal bleeding is most often associated with:

A

Placenta previa

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23
Q

The clinical manifestation of supine hypotensive syndrome include:

A
  • Tachycardia
  • Nausea
  • Pallor
24
Q

The second trimester typically refers to weeks:

A

13-26

25
Q

In the TPAL designation, the ā€œLā€ refers to:

A

Live births

26
Q

The number of pregnancies is defined as:

A

Gravidity

27
Q

The number of pregnancies in which the number of pregnancies in which the patient has given birth to a fetus at or beyond 20 weeks gestation or weight 500g?

A

Parity

28
Q

What would be an indication for a third-trimester sonogram?

A

*Evaluate fetal presentation
*Evaluate fetal growth
*Evaluate gestational age

29
Q

The quadruple screen includes an analysis of:

A

*hCG
*Alpha-fetoprotein
*Inhibin A

30
Q

Typically, with gastroschisis, the MSAFP value will be:

A

Elevated

31
Q

Typically, with anencephaly, the MSAFP value will be:

A

Elevated

32
Q

Typically, with a miscarriage, the serum hCG value will be:

A

Decreased

33
Q

What is the term for the fetal presentation that is head down?

A

Cephalic

34
Q

For the normal biophysical profile, the amniotic fluid pocket should measure:

A

At least 1cm in two perpendicular planes

35
Q

Whats included in the biophysical profile?

A
  • Flexion of the limb
  • Amniotic fluid
  • Fetal breathing
36
Q

______would be the least likely indication for first-trimester sonogram?

A

Gender identification

37
Q

The reduction in blood return to the maternal heart caused by the gravid uterus compressing the maternal IVC describes:

A

Supine hypotensive syndrome

38
Q

What is defined as the area located posterior to the broad ligaments adjacent to the uterus, which contains the ovaries and fallopian tubes?

A

Adnexa

39
Q

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

A

Internal OS of the cervix

40
Q

In the second trimester, painful vaginal bleeding may occur as a result of:

A

Placental abruption

41
Q

In second trimester, painless vaginal bleeding is most often associated with:

A

Placental previa

42
Q

_____denotes the number of pregnancies that led to the birth of a fetus at or beyond 20 weeks gestational age or of an infant who weight 500g

A

Parity

43
Q

_____denotes the number of times a woman has been pregnant

A

Gravidity

44
Q

First-trimester sonograms may require the use of a ______or higher transvaginal transducer for better visualization

A

5-10MHz

45
Q

______is when the placenta covers or nearly covers the internal os of the cervix

A

Placenta previa

46
Q

______is a peptide hormone secreted by the placenta during pregnancy

A

Inhibin A

47
Q

_______is an estrogenic hormone produced by the placenta

A

Estriol

48
Q

The highest possible sonographic score is ______ points or ______points for each criterion accomplished

A

*8
*2

49
Q

The purpose of biophysical profile scoring is to investigate for signs of:

A

Fetal hypoxia and to assess overall fetal wellbeing

50
Q

______is a maternal blood test that includes an analysis of hCG, estriol, alpha-fetoprotein and inhibin A

A

Quadruple screen

51
Q

_____is a maternal blood test performed between 15-20 gestational weeks that includes hCG, maternal serum, alpha-fetoprotein(MSAFP) and estriol

A

Triple screen

52
Q

Measurements obtained in the first trimester include:

A
  • Yolk sac
  • Gestational sac
  • CRL
  • NT
53
Q

_______is a reduction in blood return to the maternal heart caused by the gravid uterus compressing the maternal IVC

A

Supine hypotensive syndrome

54
Q

The third trimester in weeks

A

27-42 weeks

55
Q

The second trimester in weeks:

A

13-26 weeks

56
Q

First trimester in weeks:

A

1-12 weeks