II. Epidemiology
- Incidence: 10% of Congenital Heart Defects
- Females more affected than males by a ratio of 2:1
III. Pathophysiology
- One of three types of Atrial Septal Defect
- Congenital defect at the fossa ovalis
IV. Symptoms
V. Signs
- Accentuation of right ventricular precordial thrust
- Systolic ejection murmur in 2nd, 3rd left interspaces
- Wide splitting of P2
- Short Diastolic Murmur along left sternal border
VI. Radiology: Chest XRay
- Cardiomegaly
VII. Diagnostics: Electrocardiogram (EKG)
- Right Axis Deviation
- Late R-prime in right-sided leads
VIII. References
- Saenz (1999) Am Fam Physician 59(7):1857-66 [PubMed]
- Cyran (1998) PREP review lecture, October, Phoenix
- Merenstein (1994) Pediatrics, Lange