II. Epidemiology

  1. Incidence: 10% of Congenital Heart Defects
  2. Females more affected than males by a ratio of 2:1

III. Pathophysiology

  1. One of three types of Atrial Septal Defect
  2. Congenital defect at the fossa ovalis

IV. Symptoms

V. Signs

  1. Accentuation of right ventricular precordial thrust
  2. Systolic ejection murmur in 2nd, 3rd left interspaces
  3. Wide splitting of P2
  4. Short Diastolic Murmur along left sternal border

VI. Radiology: Chest XRay

  1. Cardiomegaly

VII. Diagnostics: Electrocardiogram (EKG)

  1. Right Axis Deviation
  2. Late R-prime in right-sided leads

VIII. References

  1. Saenz (1999) Am Fam Physician 59(7):1857-66 [PubMed]
  2. Cyran (1998) PREP review lecture, October, Phoenix
  3. Merenstein (1994) Pediatrics, Lange

Images: Related links to external sites (from Bing)

Related Studies (from Trip Database) Open in New Window

Ontology: Structure of ostium secundum (C0225840)

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