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9 Cards in this Set
- Front
- Back
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Coarctation of the aorta
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-an abnormal constriction of the aorta close to the point of entry of the ductus arteriosus
-3:10,000 live births -causes unclear -defect in tunica media; later defects (proliferation) in tunica media - preductal and postductal types |
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Interrupted aortic arch
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-obliteration of the 4th aortic arch on the left side.
-combinded with abnormal origin of rt. subclavian. -ductus remains open -aorta supplies head and pulmonary a. becomes decending aorta by way of ductus with low O2 blood. |
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Double Aortic Arch
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-failure of distal part of the right dorsal aorta to disappear
-constriction of trachea and esophagus |
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Right Aortic arch
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-when the right fourth arch artery and dorsal aorta persist, while the left arch and aorta regress
-may pass posterior then problems swallowing and breathing |
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Right Subclavian arising from the arch of the aorta
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-if right fourth aortic arch and right dorsal aorta cranial to the 7th interseg artery abnormally degenerate
-RT sub a. will thus arise from the left aortic arch and pass posterior to esophagus and trachea in order to reach the right arm. -difficulty in breathing and swallowing |
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Patent Ductus Arteriosus
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-failure of ductus to close after birth.
-oxygen rich blood will be shunted from aorta to the lungs -> pulmonary hypertension -lead to heart failure -substance promote closure e.g. indomethacin -most common associated with maternal rubella infection -common in premature babies |
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Double inferior vena cava
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left sacrocardinal vein persists, forming an additional IVC inferior to the kidneys
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Left Superior Vena cava
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-persistence of the left anterior cardinal and common cardinal vein to/from a left SVC.
-thus left SVC drains into right atrium via left sinus horn |
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Absense of Hepatic Segment of IVC
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-Right Vitelline vein does not form segment of IVC
-blood from the lower part of the body must therefore reach its destination via the azygos vein, hemiazygous and SVC |
