You are about to take the CME Quiz for Trisomy 18: Review, Ultrasound Diagnosis and Case Reports

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QUIZ

Trisomy 18: Review, Ultrasound Diagnosis and Case Reports

Click on your answer to each question and then click on "score quiz." Your test will be automatically scored. You must score 70% or better to pass. If you pass, simply fill in the information form to pay for the CME credit, and your certificate will be ready for printing.

 


1. The prevalence of trisomy 18 is:

a.12/10,000

b. 3/10,000

c. 200/10,000

d. . 1/10,000

e. 25/10,000

 

2. Which of the following is true for trisomy 18:

a. Translocation is the principal etiology.

b. Trisomy 18 is more common than trisomy 21

c. Parental origin of the extra chromosome is maternal in 96%

d. Maternal age is not a risk factor.

e. 70% die during the first month.

 

3. Which of these is not an associated anomaly in Trisomy 18:

a. Congenital heart disease.

b. Growth restriction

c. Polyhydramnios.

d. Clenched hand and rocker bottom foot

e. Cloverleaf skull

 

4. Diaphragmatic hernia can be seen in fetuses with Trisomy 18 in what percentage of the cases:

a. 29%

b.39%

c. 49%

d. 59%

e. 69%

 

5. In trisomy 18 clinical findings include the following, except:

a. Prominent occiput

b. Short sternum

c. Micrognathia

d. Holoprosencephaly

e. Rhizomelia

 

6. The strawberry shaped head is most typical of:

a. Trisomy 18

b. Thanatophoric dysplasia

c. Osteogenesis imperfecta

d. a and b

e. a and c

 

7. In pregnancies in which the fetus is affected with T 18, which is true:

a. AFP is low, unconjugated estriol is high, and HCG is low

b. AFP is high, unconjugated estriol is high, and HCG is low

c. AFP is high, unconjugated estriol is low, and HCG is high.

d. All three serum markers are high

e. All three serum markers are low.

 

8. The most common cardiovascular anomaly seen in trisomy 18 is:

a. Atrial septal defect

b. Coarctation of the aorta

c. Bicuspid aortic valve

d. Ventricular septal defect

e. Dextrocardia.

 

9. The following image of a fetus with trisomy 18 corresponds to:

a. Tibial hemimelia

b. Acromelia

c. Club-foot

d. Rocker-bottom foot

e. Symbrachydactyly

 

10. Which of the following anomalies is associated with trisomy 18:

a. Single umbilical artery

b. Neural tube defects

c. Radial anomalies

d. Nuchal lucency greater than 3mm

e. All of the above

 


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