Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
Is due to a low insertion of the tricuspid valve which divides the right ventricle into proximal and distal chambers. The proximal atrialized division works as a receiving chamber with the right atrium. The more distal ventricular division acts as pumping chamber. A functional obstruction at the level of the tricuspid valve exists due to asynergous diastole of atrium during systole of the atrialized right ventricle. The tricuspid valve is often deformed, leading to tricuspid regurgitation. A right to left interatrial shunt is often present. The clinical course depends on the amount of tricuspid valve deformation / obstruction and the amount of right to left shunt.
On the CXR cardiomegaly with a prominent right heart border and decreased pulmonary vasculature is seen. A "box like" configuration to the heart can be seen in older children due to a combination of right atrial enlargement and outward displacement of the right ventricular outflow tract.
See References Chapter.
Section Top | Title Page
Follow us on Twitter @pedseducation and @pedsimaging
Please send us comments by filling out our Comment Form.
All contents copyright © 1992-2016 Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. and the authors. All rights reserved.
"Virtual Pediatric Hospital", the Virtual Pediatric Hospital logo, and "A digital library of pediatric information" are all Trademarks of Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D.
Virtual Pediatric Hospital is funded in whole by Donna M. D'Alessandro, M.D. and Michael P. D'Alessandro, M.D. Advertising is not accepted.
Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.
The information contained in Virtual Pediatric Hospital is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.