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
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| Concepts | Body Part, Organ, or Organ Component (T023) |
| SnomedCT | 24467006 |
| English | ostium secundum, Ostium secundum, Structure of ostium secundum (body structure), Structure of ostium secundum |
| Spanish | estructura del ostium secundum (estructura corporal), estructura del ostium secundum, ostium secundum |
