Pulsed Doppler echocardiographic evaluation of the cyanotic newborn: identification of the pulmonary artery in transposition of the great arteries
| Autor: | Isamu Kawabori, James Geoffrey Stevenson, Warren G. Guntheroth |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
medicine.medical_specialty
Transposition of Great Vessels Diastole Doppler echocardiography Pulmonary Artery Transposition (music) Internal medicine Ductus arteriosus medicine.artery medicine Humans Angiocardiography Ductus Arteriosus Patent Cyanosis medicine.diagnostic_test business.industry Infant Newborn Doppler Effect medicine.anatomical_structure Great vessels Great arteries Echocardiography Pulmonary artery cardiovascular system Cardiology Cardiology and Cardiovascular Medicine business |
| Zdroj: | The American journal of cardiology. 46(5) |
| ISSN: | 0002-9149 |
| Popis: | During M mode echocardiographic evaluation of cyanotic newborn infants, one may find two ventricles and two great vessels, but not have proof of their identity. Identification of the great vessels is important in evaluation of possible transposition of the great arteries. In a series of 68 cyanotic neonates pulsed Doppler echocardtography was applied to test the hypotheses that (1) a patent ductus arterlosus in present in most cyanotic neonates, (2) the great vessel that receives diastolic ductal flow is the pulmonary artery, and (3) specific noninvasive identification of pulmonary artery will allow diagnosis or exclusion of transposition of the great arteries. On M mode examination, the relations of the great vessels were normal in 43 infants; in all, pulsed Doppler echocardiography detected a patent ductus arteriosus flowing into a normally positioned pulmonary artery. The cyanosis in these 43 patients was later proved to be of pulmonary origin. In eight infants, the relation of the great vessels suggested transposition, and in all eight, Doppler echocardiography detected a patent ductus flowing into the posterior great vessel, proved at angiocardiography to be the transposed pulmonary artery. In 17 patients, the relation of the great vessels was front to back, neither “normal” nor suggestive of classic d transposition. A patent ductus arterlosus, detected with pulsed Doppler echocardiography in all 17, flowed into the anterior great vessel in the 14 normal infants, and flowed into the transposed pulmonary artery in the 3 with proved transposition. It is concluded that ductal patency is prevalent in cyanotic neonates, and that pulsed Doppler echocardiographic detection of ductal flow can define the pulmonary artery; such definition is most helpful in resolving the question of transposition in infants with a relation of the great vessels that is neither normal nor suggestive of transposition. |
| Databáze: | OpenAIRE |
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