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Seminar OB/GYN Pop Quizzes > Pop Quiz #5 > Flashcards

Pop Quiz #5 Flashcards

1
Q

A femur length measurement is 2 wks less than dates in the 3rd trimester. What other steps might a sonographer take to determine of this is a significant finding?

  • Measure other long bones to rule out skeletal dysplasias
  • Assess the FL/BPD ratio
  • Confirm the measurement w/ a linear array transducer
  • All of the above
A

All of the above

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2
Q

The fetal lungs appear homogenous and slightly more echogenic than the liver
True
False

A

True

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3
Q 
The posterior fossa is imaged to include all of the following except:
Cerebral peduncles
Cisterna magna
Cavum septum pellucidum
Cerebellar hemispheres
A

Cavum septum pellucidum

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4
Q

All of the following are indications for genetic testing in pregnancy except:

  • Elevated MS-AFP
  • Hx of prior pregnancy w/ chromosomal anomally
  • AMA
  • Decreased MS-AFP
  • None of the above
A

None of the above

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5
Q

All of the following statements about the fetal spine are true exept:

  • The spine should be imaged in the sagittal plane only
  • The neural tube develops through the process of nerualation, closing the caudal and cephalic ends last
  • It’s important to image the soft tissue of the dorsal spine, as well as the bony formation
  • Widening of the proximal cervical spine and tapering of the distal sacral spine are normal sonographic features in the fetus
A

The spine should be imaged in the sagittal plane only

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6
Q 
What neck mass is lymphatic in origin?
Cystic hygroma
Nuchal thickening
Thyroglossal duct cyst
Epignathus
A

Cystic hygroma

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7
Q 
If placental tissue encroaches the internal os, it's called:
Placenta previa
Placenta increta
Marginal placenta previa
Placental abruption
A

Marginal placenta previa

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8
Q 
The chorionic membrane is derived from what component of the conceptus?
Decidua capsularis
Trophoblast
Chorionic villi
Decidua basalis
A

Trophoblast

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9
Q 
The sonographer measures an AFI of 24 cm at 25 wks gestation. This may be associated w/ all of the following except:
Esophageal atresia
Spina bifida
Preeclampsia
Twin-twin transfusion syndrome
Thanatophoric dysplasia
A

Preeclampsia

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10
Q

Which of the following isn’t a clinical symptom of placental abruption?

  • Painful, spastic uterus
  • Hypoechoic retroplacental mass
  • Vaginal bleeding
  • Signs of shock
A

Hypoechoic retroplacental mass

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11
Q

The fetal urinary bladder not observed at the beginning of the obstetrical sonogram. The sonographer should:

  • Consider a diagnosis of bilateral renal agenesis
  • Search carefully for associated cardiac anomalies
  • Continue w/ the rest of the exam, and re-check for bladder filling after 20-30 minutes
  • Try a higher frequency transducer for better image resolution
A

Continue w/ the rest of the exam, and re-check for bladder filling after 20-30 minutes

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12
Q

All of the following are causes of large for dates except:

  • erroneous menstrual hx
  • intrauterine growth retardation
  • multiple gestations
  • molar pregnancy
  • polyhydramnios
A

intrauterine growth retardation

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13
Q

Cyclopia refers to:

  • A soft tissue protrusion from the forehead
  • Extra digits
  • A skull deformity w/ a prominent forehead
  • A single bony orbit
A

A single bony orbit

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14
Q

Sonolucent areas are seen sonographically at the placental-myometrial interface. This finding most likely represents:

  • Normal myometrial vessels
  • Submembranous bleeding
  • Retroplacental hematoma
  • Areas of placental infarct
A

Normal myometrial vessels

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15
Q 
The ductus arteriosus allows passage of blood from the pulmonary artery to the:
Lt atrium
Pulmonary vein
Aortic arch
Superior vena cava
A

Aortic arch

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16
Q

Placement of the ellipse for a HC measurement should not include which of the following?

  • Anterior and posterior areas of echo drop-out due to refractive shadowing
  • cranial echoes
  • Scalp echoes
  • edematous skin thickening
  • more than one of the above
A

more than one of the above

17
Q 
Which structure in the fetal retroperitoneum might be confused for a normal kidney?
Spleen
Psoas muscle
Descending colon
Adrenal gland
Undescended testis
A

Adrenal gland

18
Q 
Which of the following is the least accurate sonographic measurement for determining gestational age?
BPD
HC
AC
CRL
FL
A

AC

19
Q 
A fetus is suspected to have IUGR at 26 weeks. Which measurement is prudent for determining gestational age in this case?
Clavicular length
Transcerebellar diameter
Fool length
AC
A

Transcerebellar diameter

20
Q

Which of the following statements regarding diaphragmatic hernias isn’t true?

  • Most diaphragmatic hernias occur on the right side
  • A differential diagnosis for a fluid-filled mass in the lung is CCAM type I
  • Severe diaphragmatic hernias include bowel and even liver
  • There is associated polyhydramnios w/ a diaphragmatic hernia
A

Most diaphragmatic hernias occur on the right side

21
Q 
Which of the following isn't part of the fetal anatomy that should be seen when obtaining an image for an AC measurement?
Fluid filled stomach
Portal vein
Rt adrenal gland
Umbilical cord insertion
A

Umbilical cord insertion

22
Q

The apex of the heart is oriented toward the rt anterior chest wall.
True
False

A

False

23
Q

In which of the following situations might the BPD be inaccurate for dating?

  • Late in the 3rd trimester
  • When the fetal head is low in the maternal pelvis and difficult to see
  • When the cephalic index is 69%
  • All of the above
A

All of the above

24
Q

Asymmetrical growth restriction, also known as “head-sparing” IUGR, is:

  • Seen in the late 2nd and 3rd trimester
  • Less common than symmetrical IUGR
  • Characterized by a disproportionately small BPD
  • Likely to have a normal HC/AC ratio
A

Seen in the late 2nd and 3rd trimester

25
Q 
The biophysical profile scoring includes all of the following except:
Umbilical artery Doppler
Fetal breathing
Fetal tone
Amniotic fluid assessment
A

Umbilical artery Doppler

Seminar OB/GYN Pop Quizzes (7 decks)

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