Chapter 30 Chromosomal abnormality Flashcards
A 38 year old pregnant woman presents to the sonography department for an obstetrical sonogram with abnormal maternal serum screening. Her alpha-fetaprotein and estriol are low, while her human chorionic ganadotropin is elevated. These laboratory findings are most consistent with?
Down Syndrome
The triple screen typically includes:
alpha fetoprotein, estriol, and human chorionic ganadortopin
Rounded head shape is referred to as:
bracheycephaly
brachycephaly is associated most often with which syndrome?
Down syndrome
Advanced maternal age is considered to be?
> 35 years of age
A molar pregnancy, omphalocele and small low set ears are found most often with?
Triploidy
Placental tissue is obtained with what procedure?
Chorionic Sampling
The bending of the fifth digit toward the fourth digit is called?
Clinodactyly
Webbing of the neck and short stature is found in infertile female patients with a history of:
Turner syndrome
The earliest fetal karyotyping technique that can be performed is?
Chorionic villi sampling
A strawberry-shape skull is associated with?
Edwards syndrome
Cleft lip, hypoterlorism, and microphthalmia are all sonographic features of?
Trisomy 13
Monosomy X refers to?
Turner Syndrome
A 22 week gestation fetus with clinodactyly, an echogenic intracardiac focus, and hyperechoic bowel is noted during a screening obstetrical sonogram. These findings are consistent with?
Trisomy 21
The term for small eyes?
microphthalmia