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9 Cards in this Set

  • Front
  • Back
Transverse Precardial Sinus
space behind great vessels - aorta pulmonary trunk
loops to the left instead of the right - most associated with situs inversus (general reversal of many organs)
Shift to the right
due to left to right shunts of blood occur in venous system
Common Atrium (Cor Triloculare Biventriculare)
neither septum primum nor septim secundum form; always associated with serious defects elsewhere in the heart; serious fatal condition
Ostium Secundum Defect
cause by excessive resorption of septum primumm, septum secundum or both; F/M 3:1; some blood passes from left atrium to right; over long period can be tolerated; ultimately causes right atrial hypertrophy, increased blood flow to lungs and pulmonary hypertension
Ventricular Septal Defects (VSD)
-most common of all congenital heart malformations (25%)
-1:900 births
-most membranous portion of septum; associated w/ partitioning of conotruncal region
-large defect associated with left to right shunting of blood
-surgical repair
-muscular VSD's usually small defects often close after birth "Swiss Cheese Defect"
Persistent Truncus Arteriosus
-insufficient neural crest cell migration, only partial AP septum
-results only one large vessel, recieve blood from both L & R ventricles
-usually associated with membranous VSD
Transposition of the great vessels
-1:2000 live births
-septum grows almost straight down the truncus
-result in aorta being transported to RV and pulmonary to LV
-systemic and pulmonary completely seperated
-not immediately fatal, ductus ateriosus or foramen ovale
-leading cause of death in infants w/ cyanotic heart disease
Tetralogy of Fallot
-abnormal AP septum
1. Pulmonary Stenosis
2. Overriding Aorta
3. VSD
4. Right Ventricular Hypertrophy