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Ostium Primum
Aka: Ostium Primum
- See Also
- Atrial Septal Defect
- Congenital Heart Disease
- Congenital Heart Disease Causes
- Epidemiology
- Incidence: 2% of congenital heart defects
- Pathophysiology
- One of three types of Atrial Septal Defect
- Congenital opening in septum near AV valves
- Defect occurs during Embryonic development
- Associated with cleft mitral valve leaflet
- Symptoms
- Dyspnea
- Signs
- Rounded chest
- Precordial bulge (rare)
- No cyanosis or finger Clubbing
- Accentuated precordial Apical Thrust
- Accentuated P2 with fixed splitting on respirations
- Systolic thrill near sternal border
- Systolic Murmur
- Harsh Systolic Murmur at left sternal border
- Apical Systolic Murmur transmitted to axilla
- Mitral Regurgitation
- Mid-Diastolic Murmur at apex
- Radiology: Chest XRay
- Cardiomegaly
- Diagnostics: Electrocardiogram (EKG)
- Incomplete Right Bundle Branch Block
- References
- Saenz (1999) Am Fam Physician 59(7):1857-66
- Cyran (1998) PREP review lecture, October, Phoenix
- Merenstein (1994) Pediatrics, Lange