CASE 49
History: A patient undergoes a first-trimester ultrasound examination in which real-time and M-mode images are obtained.
1. The ultrasound features in Figure A and Figure B may be secondary to which of the following? (Choose all that apply.)
B. Trisomy 13
D. Trisomy 18
2. The M-mode ultrasound scan of a normal second-trimester pregnancy in Figure C is labeled A to D. Line C best corresponds to:
B. The junction between the cardiac atria and the lung
D. Intraventricular septal valves
3. In a first-trimester fetus, increased nuchal translucency and abnormal karyotype can be identified in all of the following except:
C. Trisomy 18
4. Which of the following is not an ultrasound finding associated with fetal demise?
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