Author + information
- Received August 17, 1982
- Revision received November 2, 1982
- Accepted November 5, 1982
- Published online March 1, 1983.
- Thomas W. Riggs, MD, FACC*,
- Gregory D. Lapin, MSEE,
- Milton H. Paul, MD, FACC,
- Alexander J. Muster, MD, FACC and
- Teresa E. Berry, MD, FACC
- ↵*Address for reprints: Thomas W. Riggs, MD, Division of Cardiology, Children's Memorial Hospital, 2300 Children's Plaza, Chicago, Illinois 60614.
Two-dimensional echocardiograms of the mitral valve orifice area were obtained in 50 normal pediatric subjects, 15 patients with congenital mitral stenosis and 7 patients with tricuspid atresia. The mitral area was measured near the tips of the mitral valve leaflets from a diastolic cross-sectional image of the left ventricle. The cardiac images were recorded on videotape and later transferred to video disc for high resolution contour tracing. Contour analysis was performed by a special purpose microcomputer system for calculation of the enclosed calibrated area.
In normal patients, there was an excellent correlation (r = 0.95) between mitral valve area (MVA) (in cm2) and body surface area (BSA) (in m2) described by MVA =4.83 x BSA - 0.07. Each patient with mitral stenosis had a mitral valve area that measured less than the third percentile predicted from the normal regression formula. In eight patients in whom the Gorlin formula could be applied, there was excellent correlation (r = 0.95) between echocardiographic and hemodynamic measurements of mitral valve area. Each patient with tricuspid atresia had a very large mitral valve area (> 99th percentile of normal). It is concluded that noninvasive measurement of mitral valve orifice area can be accurately achieved by two-dimensional echocardiography in pediatric patients with congenital mitral stenosis, allowing serial measurement of their mitral valve area.
with the technical assistance of Sue E. Pajcic and Kay Berdusis
This study was supported in part by the Walden W. Shaw Foundation, Chicago, Illinois
- Received August 17, 1982.
- Revision received November 2, 1982.
- Accepted November 5, 1982.
- American College of Cardiology Foundation