Author + information
- Received December 20, 1982
- Revision received February 24, 1983
- Accepted February 24, 1983
- Published online July 1, 1983.
- Rhonda S. Lappen, MD,
- Thomas W. Riggs, MD, FACC*,
- Gregory D. Lapin, MSEE,
- Milton H. Paul, MD, FACC,
- Alexander J. Muster, MD, FACC,
- with the technical assistance of Sue E. Pajcic and Kay Berdusis
- ↵*Address for reprints: Thomas W. Riggs, MD, Division of Cardiology, The Children's Memorial Hospital, 2300 Children's Plaza, Chicago, Illinois 60614.
Two-dimensional suprasternal notch echocardiograms of the right pulmonary artery were obtained in 50 normal infants and children to determine the right pulmonary artery diameter. An excellent nonlinear correlation between the right pulmonary artery diameter (RPA) in cm and body surface area (BSA) in m2was observed: RPA (systole) = 1.41 (BSA)051, r = 0.94 and RPA (diastole) = 1.28 (BSA)0.52, r = 0.93. These data were utilized to calculate the normal range (3rd and 97th percentiles) of right pulmonary artery diameter as a function of body surface area. The right pulmonary artery diameter was also measured in 37 patients with tetralogy of Fallot, 30 patients with a secundum atrial septal defect and 12 patients with pulmonary valve insufficiency of various causes. Pulmonary artery diameter was less than the 3rd percentile for body surface area in 16 of the 37 patients with tetralogy of Fallot, but it exceeded the 97th percentile in 17 of the 30 patients with an atrial septal defect and 8 of the 12 patients with pulmonary insufficiency. In 20 patients undergoing both angiography (Angio) and echocardiography (Echo), then was excellent agreement of right pulmonary artery di-ameter measurements by the two methods: Angio = 1.06 (Echo), r = 0.93.
Thus, accurate measurement of the right pulmonary artery diameter can be achieved by echocardiography, This important information, which provides quantitative and serial assessment of right pulmonary artery diam-eter in pathologic conditions that affect its caliber, may facilitate decisions about the selection of the appropriate initial surgical procedure and the timing of subsequent angiography in patients with tetralogy of Fallot.
This study was supported in part by the Waiden W. Shaw Foundation, Chicago, Illinois.
- Received December 20, 1982.
- Revision received February 24, 1983.
- Accepted February 24, 1983.
- American College of Cardiology Foundation