CHORUS
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atrial septal defect (ASD)
most common CHD presenting in adults
- 8-14% of CHD
- M:F 1:4
- secundum > sinus venosus > primum
- average lifespan: 40 yrs
CXR:
- shunt vascularity with >2:1 shunt
- normal aortic knob
- enlargment of pulmonary arteries
- loss of visualization of SVC due to RVH and clockwise rotation of heart
- atrial fibrillation
- pulmonary artery HTN (15%)
- Eisenmenger syndrome (6-9%, NOT related to ASD size)
Lutembacher syndrome: ASD + mitral stenosis
Brian Funaki, MD - 7 February 1995
Last updated: 1 October 2013
Copyright © 2013, Charles E. Kahn, Jr.