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Thursday 1 December 2011

Atrial septal defect

- accounts for 10-15% of all congenital cardiac anomalies
- more common in women than men (2:1)
- 2 types: ostium secundum (75%) and ostium primum
- complications rarely occur in childhood, but prolonged shunting leads to pulmonary hypertension, atrial fibrillation, Eisenmenger syndrome, but not risk of endocarditis
- sign: pulmonary flow murmur, splitting of second heart sound
- ECG: RBBB & RAD (secundum) ; RBBB & LAD (primum)
- association: Holt Oram syndrome (ASD with triphalangeal thumb and radial abnormalities); Lutembacher syndrome (ASD and MS)
- treatment: ASD closure before age of 10 years old
- Uncorrected, 70% develop symptoms by age of 40



1 comment:

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