Tricuspid atresia pathophysiology: Difference between revisions
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Blood is mixed in the [[left atrium]]. Because the only way the pulmonary circulation receives blood is through the VSD, a [[patent ductus arteriosus]] is usually also formed to increase pulmonary flow. | Blood is mixed in the [[left atrium]]. Because the only way the pulmonary circulation receives blood is through the VSD, a [[patent ductus arteriosus]] is usually also formed to increase pulmonary flow. | ||
===Gross Pathology=== | |||
Shown below is an example of Tricuspid atresia characterized by a dimple in the floor of the right atrium. | |||
[[Image:TA 1.jpg|center|250px]] | |||
==References== | ==References== | ||
Revision as of 19:45, 2 October 2012
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Tricuspid atresia Microchapters |
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Tricuspid atresia pathophysiology On the Web |
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Keri Shafer, M.D. [2] Priyamvada Singh, MBBS [[3]]; Assistant Editor-In-Chief: Kristin Feeney, B.S. [[4]]
Overview
Pathophysiology
Normal Human Heart
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Tricuspid Atresia
This defect occurs during prenatal development. Because of the lack of an A-V connection, an atrial septal defect (ASD) must be present to maintain blood flow. Also, since there is a lack of a right ventricle there must be a way to pump blood into the pulmonary arteries, and this is accomplished by a ventricular septal defect (VSD).
Blood is mixed in the left atrium. Because the only way the pulmonary circulation receives blood is through the VSD, a patent ductus arteriosus is usually also formed to increase pulmonary flow.
Gross Pathology
Shown below is an example of Tricuspid atresia characterized by a dimple in the floor of the right atrium.
