Cardiovascular Medicine Book


Ostium Primum

Aka: Ostium Primum
  1. See Also
    1. Endocardial Cushion Defect
    2. Atrial Septal Defect
    3. Congenital Heart Disease
    4. Congenital Heart Disease Causes
  2. Epidemiology
    1. Incidence: 2% of Congenital Heart Defects
  3. Pathophysiology
    1. One of three types of Atrial Septal Defect
    2. Congenital opening in septum near AV valves
    3. Defect occurs during Embryonic development
    4. Associated with cleft mitral valve leaflet
  4. Symptoms
    1. Dyspnea
  5. Signs
    1. Rounded chest
    2. Precordial bulge (rare)
    3. No Cyanosis or finger Clubbing
    4. Accentuated precordial Apical Thrust
    5. Accentuated P2 with fixed splitting on respirations
    6. Systolic thrill near sternal border
    7. Systolic Murmur
      1. Harsh Systolic Murmur at left sternal border
      2. Apical Systolic Murmur transmitted to axilla
        1. Mitral Regurgitation
    8. Mid-Diastolic Murmur at apex
  6. Radiology: Chest XRay
    1. Cardiomegaly
  7. Diagnostics: Electrocardiogram (EKG)
    1. Incomplete Right Bundle Branch Block
  8. 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

Structure of ostium primum (C0225839)

Concepts Body Part, Organ, or Organ Component (T023)
SnomedCT 86023005
English ostium primum, Ostium primum, Structure of ostium primum (body structure), Structure of ostium primum
Spanish estructura del ostium primum (estructura corporal), estructura del ostium primum, ostium primum
Derived from the NIH UMLS (Unified Medical Language System)

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