title: Two-dimensional echocardiographic assessment of pulmonary artery and aortic arch anatomy in cyanotic infants.
abstract: To determine the feasibility and accuracy of noninvasive assessment of pulmonary artery and aortic arch anatomy, a prospective two-dimensional echocardiographic evaluation was performed in 20 consecutive cyanotic infants before cardiac catheterization and angiography. The echocardiographic assessment was correct with the following frequency: detection of left aortic arch in 13 of 13 infants, detection of right aortic arch in 7 of 7, identification of patent ductus arteriosus in 13 of 13 (one false positive finding), identification of a right pulmonary artery in 20 of 20, identification of a left pulmonary artery in 19 of 20, identification of the confluence of the right and left pulmonary arteries in 19 of 20 and identification of a main pulmonary artery in 14 of 16 (two false positive diagnoses by echocardiography). Echocardiographic estimates of arterial diameters were slightly smaller than those obtained by angiography. Mean vessel size (echocardiographic/angiographic diameter) was as follows: transverse aortic arch 8.6/10.6 mm, main pulmonary artery 5.7/6.3 mm, right pulmonary artery 4.1/4.2 mm and left pulmonary artery 4.2/3.9 mm. It is concluded that although two-dimensional echocardiography tends to underestimate vessel size, the qualitative assessment is adequate for planning a systemic to pulmonary artery anastomosis in selected infants with cyanotic forms of congenital heart disease.
mesh_terms: D001013:Aorta, Thoracic / Q000473:pathology*; D006328:Cardiac Catheterization; D004374:Ductus Arteriosus, Patent / Q000175:diagnosis; D004452:Echocardiography / Q000379:methods*; D006330:Heart Defects, Congenital / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011300:Preoperative Care; D011446:Prospective Studies; D011651:Pulmonary Artery / Q000473:pathology*