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Questions and Answers
The triple test can detect 80 percent of trisomy 21 pregnancies.
The triple test can detect 80 percent of trisomy 21 pregnancies.
False
Ultrasound examination can decrease the sensitivity of the triple test.
Ultrasound examination can decrease the sensitivity of the triple test.
False
The most common biochemical marker associated with trisomy 21 is increased nuchal fold thickness.
The most common biochemical marker associated with trisomy 21 is increased nuchal fold thickness.
False
Choroid plexus cysts are a common finding in normal fetal development.
Choroid plexus cysts are a common finding in normal fetal development.
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Cystic hygromas are a fatal congenital anomaly.
Cystic hygromas are a fatal congenital anomaly.
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The false-positive rate of the triple test is 10 percent when ultrasound examination is not used.
The false-positive rate of the triple test is 10 percent when ultrasound examination is not used.
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The 'double-bubble sign' is a characteristic of duodenal stenosis.
The 'double-bubble sign' is a characteristic of duodenal stenosis.
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Incurving of the fifth finger is a common finding in normal fetal development.
Incurving of the fifth finger is a common finding in normal fetal development.
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First-trimester screening using ultrasound measurement of nuchal translucency is a highly effective screening test for trisomy 21.
First-trimester screening using ultrasound measurement of nuchal translucency is a highly effective screening test for trisomy 21.
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Renal pelvis dilation is a soft marker for trisomy 21.
Renal pelvis dilation is a soft marker for trisomy 21.
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