Aneuploidy Abnormalities Quiz
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Questions and Answers

Which of the following is a characteristic associated with Trisomy 18?

  • Absent nasal bone
  • Cystic hygroma
  • Abnormally small mandible
  • Frontal Bossing (correct)
  • Which chromosomal abnormality is associated with an increased risk of congenital diaphragmatic hernia?

  • Turner syndrome
  • Trisomy 21
  • Trisomy 13
  • Trisomy 18 (correct)
  • Which cardiac abnormality is strongly associated with Trisomy 21?

  • Ventricular septal defect
  • Atrioventricular septal defect (correct)
  • Echogenic cardiac foci
  • Atrial septal defect
  • Which gastrointestinal abnormality is associated with Trisomy 21?

    <p>B and D</p> Signup and view all the answers

    Which abdominal wall abnormality is most commonly associated with Trisomy 18?

    <p>Omphalocele</p> Signup and view all the answers

    Which genitourinary abnormality is most commonly associated with Trisomy 21?

    <p>Renal Pyelectasis/ Hydronephrosis</p> Signup and view all the answers

    Which skeletal abnormalities is associated with Trisomy 18?

    <p>Club foot, Rocker bottom foot, Clenched hands</p> Signup and view all the answers

    Which of the following is the most common aneuploidy associated with microcephaly?

    <p>Trisomy 13</p> Signup and view all the answers

    Which of the following is the HIGHEST risk aneuploidy abnormality associated with the central nervous system?

    <p>Alobar holoprosencephaly</p> Signup and view all the answers

    Which of the following is NOT a facial abnormality associated with aneuploidy?

    <p>Microcephaly</p> Signup and view all the answers

    Which of the following is NOT a marker for increased risk of Down syndrome in the second trimester ultrasound?

    <p>Hypoechoic bowel</p> Signup and view all the answers

    Which of the following abnormalities is associated with the highest risk of aneuploidy in central nervous system?

    <p>Alobar holoprosencephaly</p> Signup and view all the answers

    Which of the following head shapes is associated with Trisomy 18?

    <p>Strawberry-shaped head</p> Signup and view all the answers

    Which of the following is an important factor for detecting chromosomal abnormalities in a fetus?

    <p>Maternal blood tests</p> Signup and view all the answers

    What is the purpose of nuchal translucency screening ultrasound?

    <p>To determine the risk of aneuploidy and cardiac anomalies</p> Signup and view all the answers

    What does a nuchal translucency measurement of 2.5 mm or greater at 11-14 weeks GA indicate?

    <p>High risk of chromosomal abnormalities</p> Signup and view all the answers

    When is nuchal translucency screening ultrasound typically performed?

    <p>During the first trimester</p> Signup and view all the answers

    What is the main purpose of ultrasound screening for chromosomal abnormalities in the second trimester is?

    <p>To identify major structural abnormalities and soft markers</p> Signup and view all the answers

    What is the abnormal measurement for nuchal translucency between 11-14 weeks gestational age?

    <p>Greater than 95th percentile</p> Signup and view all the answers

    Which chromosomal abnormality is associated with a short femur?

    <p>Trisomy 21</p> Signup and view all the answers

    Which chromosomal abnormality is associated with a widened iliac angle?

    <p>Trisomy 21</p> Signup and view all the answers

    Which chromosomal abnormality is associated with hand and foot abnormalities?

    <p>All trisomies</p> Signup and view all the answers

    Which chromosomal abnormality is associated with a clenched hand with overlapping fingers?

    <p>Trisomy 18</p> Signup and view all the answers

    Which chromosomal abnormality is associated with rocker bottom feet?

    <p>Trisomy 18</p> Signup and view all the answers

    Which chromosomal abnormality is associated with clinodactyly of the 5th finger?

    <p>Trisomy 21</p> Signup and view all the answers

    Which chromosomal abnormality is associated with sandal gap toes?

    <p>Trisomy 21</p> Signup and view all the answers

    Which chromosomal abnormality is associated with polydactyly?

    <p>Trisomy 13</p> Signup and view all the answers

    Which chromosomal abnormality is associated with a single umbilical artery?

    <p>Seen with more than one aneuploidy</p> Signup and view all the answers

    Study Notes

    Chromosomal Abnormalities and Associated Characteristics

    • Trisomy 18 is associated with an increased risk of congenital diaphragmatic hernia and omphalocele.
    • Trisomy 21 is strongly associated with atrioventricular canal defects.
    • Trisomy 21 is associated with duodenal atresia and imperforate anus.
    • Trisomy 18 is associated with omphalocele.
    • Trisomy 21 is associated with hydronephrosis and cryptorchidism.
    • Trisomy 18 is associated with clubfoot and rocker bottom feet.
    • Aneuploidy is associated with microcephaly.
    • Trisomy 21 is the highest risk aneuploidy associated with central nervous system abnormalities.
    • Macrocephaly is not a facial abnormality associated with aneuploidy.
    • A single umbilical artery is not a marker for increased risk of Down syndrome in the second trimester ultrasound.
    • Ventriculomegaly is associated with the highest risk of aneuploidy in the central nervous system.
    • Trisomy 18 is associated with a narrow bifrontal diameter.
    • Maternal age is an important factor for detecting chromosomal abnormalities in a fetus.
    • The purpose of nuchal translucency screening ultrasound is to detect increased risk of aneuploidy.
    • A nuchal translucency measurement of 2.5 mm or greater at 11-14 weeks gestational age indicates an increased risk of aneuploidy.
    • Nuchal translucency screening ultrasound is typically performed between 11-14 weeks gestational age.
    • The main purpose of ultrasound screening for chromosomal abnormalities in the second trimester is to detect major fetal anomalies.
    • A nuchal translucency measurement of 3.5 mm or greater between 11-14 weeks gestational age is abnormal.
    • Trisomy 21 is associated with a shortened femur.
    • Trisomy 21 is associated with a widened iliac angle.
    • Trisomy 21 is associated with hand and foot abnormalities, including clenched hands with overlapping fingers, rocker bottom feet, and sandal gap toes.
    • Trisomy 18 is associated with polydactyly and single umbilical artery.

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    Identifying Abnormalities Associated with Aneuploidy: Test Your Knowledge!

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