Genetics and Cardiovascular Disease Flashcards
what is congenital heart disease
a malformation of the heart, aorta or other large blood vessel
what is the most frequent form of major birth defect in newborns
congenital heart disease
what can cause congenital heart disease
several genetic health conditions inherited from one or both parents
what is the most widely known genetic condition that can cause congenital heart disease
Down’s syndrome
what percentage of children with Down’s syndrome have congenital heart disease
50%
what are almost all congenital heart diseases in children with down’s syndrome due to
a type of valve or artery narrowing problem
state 3 genetic conditions associated with congenital heart disease
down’s syndrome
turner syndrome
noonan syndrome
what percentage of children with turners syndrome will be born with congenital heart disease
25%
what percentage of children with noonan syndrome will be born with congenital heart disease
around 80%
what percentage of congenital heart disease in children with noonan syndrome will be pulmonary stenosis
50%
what are single gene syndromes
any genetic disorder caused by a change affecting only one gene, it is when a certain gene is known to cause a disease
state 4 single gene syndromes
cystic fibrosis
sickle cell disease
fragile x syndrome
muscular dystrophy
state 2 chromosomal syndromes
down’s syndrome
turner’s syndrome
what are micro-deletion syndromes
syndromes caused by a chromosomal deletion smaller than 5 million base pairs spanning several genes that is too small to be detected by conventional cytogenetic methods or high resolution karyotyping
state 4 causes of congenital heart disease
chromosomal
micro deletions
single gene
teratogens
what is a cystic hygroma
it is an often congenital multiloculated lymphatic lesion that can arise anywhere, but is classically found in the left posterior triangle of the neck and armpits
what is a webbed neck
it is a congenital skin fold that runs along the sides of the neck down to the shoulders