ASD Second most common
type of congenital heart
disease ASD occurs when the septum between the
left and right atrium is not formed properly Due to
the pressure within the L.A being greater ASD is
classified cyanotic as oxygenated blood from
as a
the LA is
being forced through the ASD to the RA
after birth
Larger defects
require treatment
Embryological formation
It of atrial septum
, Pathophysiology
There are five types of ASD from most least
common
Patent Foramen Ovale
Ostium Secundum defect
Ostium Primum defect
Sinus venous defect
Coronary sinus defect
Risk factors
Autosomnal dominance inheritance has been
found to have a link with ostium secundum
ASD clusters Risk also 4 in children with a FH
Other maternal RFs include
Maternal smoking in 1st trimester
Maternal diabetes
Maternal rubella
Maternal drug use Cocaine or alcohol
e.g
often ASD is linked to congenital syndromes
type of congenital heart
disease ASD occurs when the septum between the
left and right atrium is not formed properly Due to
the pressure within the L.A being greater ASD is
classified cyanotic as oxygenated blood from
as a
the LA is
being forced through the ASD to the RA
after birth
Larger defects
require treatment
Embryological formation
It of atrial septum
, Pathophysiology
There are five types of ASD from most least
common
Patent Foramen Ovale
Ostium Secundum defect
Ostium Primum defect
Sinus venous defect
Coronary sinus defect
Risk factors
Autosomnal dominance inheritance has been
found to have a link with ostium secundum
ASD clusters Risk also 4 in children with a FH
Other maternal RFs include
Maternal smoking in 1st trimester
Maternal diabetes
Maternal rubella
Maternal drug use Cocaine or alcohol
e.g
often ASD is linked to congenital syndromes
