Michael P. D'Alessandro, M.D.
Peer Review Status: Internally Peer Reviewed
There are 4 locations for VSD - supracrystal, membranous (the most common - 80%), endocardial cushion type (posterior), and muscular. The amount of hemodynamic disturbance associated with a VSD depends on the size of the VSD and the pulmonary vascular resistance. Eisenmenger's physiology is when the pulmonary vascular resistance exceeds the systemic resistance and there is a reversal of a left to right shunt to a right to left shunt. After a left to right shunt develops the left atrium and left ventricle dilate to accomodate the increased pulmonary venous return. Fifty percent of cases spontaneously close by 3 years of age.
Depends on the size of the shunt. Small VSDs have normal chest films. Moderate or large VSDs with low pulmonary vascular resistance have prominent shunt vascularity, with left atrial and ventricular dilation.
Left atrial enlargement is evidenced by a bulge that elevates the left bronchus, a double density along the right heart border, and a posterior indentation of a barium filled esophagus.
Signs of pulmonary hypertension include pruned tree pulmonary vascularity and right ventricular dilation.
See References Chapter.
Section Top | Title Page
Please send us comments by filling out our Comment Form.
All contents copyright © 1992-2014 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.
This site complies with the HONcode standard for trustworthy health information: