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[Angiographic study of pulmonary circulation in tetralogy of Fallot with pulmonary atresia].
Arq Bras Cardiol
February 2005
Instituto Nacional de Cardiologia Laranjeiras, Rio de Janeiro, RJ.
Objective: To identify the types of pulmonary vascular blood supply in tetralogy of Fallot with pulmonary atresia by use of hemodynamic study.
Methods: Fifty-six patients with tetralogy of Fallot and pulmonary atresia, and ages ranging from 20 days to 4 years, underwent cineangiocardiographic study with contrast medium injections in the following vascular structures: 1) wedged pulmonary vein; 2) aortopulmonary collaterals; 3) thoracic aorta; and 4) ductus arteriosus or systemic-pulmonary shunt.
Results: In the 56 patients studied, pulmonary blood was supplied as follows: in 15, by aortopulmonary collaterals; in 36, only by the ductus arteriosus; and in 5, by the ductus arteriosus and aortopulmonary collaterals.
Angiographic morphologic characteristics in pulmonary atresia with intact ventricular septum.
Arq Bras Cardiol
May 2004
Rio de Janeiro, RJ, Brazil.
Objective: To determine the morphological and functional changes in the right ventricle in pulmonary atresia with intact ventricular septum (PAIVS) for assessing the candidates for the different therapeutic procedures currently available.
Methods: Thirty-one patients underwent cineangiocardiographic study with axial projections. Their ages ranged from 1 to 50 days (x = 9.
Usefulness of the pulmonary vein flow velocity-time profile as an estimate of left atrial storage fraction.
Angiology
October 1994
Second Department of Internal Medicine, Gifu University School of Medicine, Japan.
During ventricular systole, the left atrium (LA) stores a certain amount of ventricular stroke volume; this is defined as an LA storage volume. From cineangiocardiograms, an LA storage fraction is obtained as the ratio of the LA storage volume to left ventricular stroke volume. From the pulmonary vein (PV) flow velocity-time profile, the LA storage fraction may be estimated as a ratio of the PV flow velocity-time integral during systole (Sa) to a sum of that during systole and diastole (Sa+Da), namely, Sa/(Sa+Da), provided that the PV cross-sectional area remains relatively unchanged during one cardiac cycle and that the PV flow velocity-time profile is similar in any of the PVs draining to the LA.
View Article and Find Full Text PDF[Double aortic arch associated with stenosis of left pulmonary artery].
Arq Bras Cardiol
January 1993
Instituto de Moléstias Cardiovasculares de São José do Rio Preto.
Case report on a 6-year-old patient with vascular ring, due to double aortic arch. The patient was asymptomatic. The barium-filled esophagus showed bilateral indentations and a large posterior indentation.
View Article and Find Full Text PDFProgress of patients with pulmonary atresia after systemic to pulmonary arterial shunts.
Ann Thorac Surg
March 1991
Department of Cardiology, Green Lane Hospital, Auckland, New Zealand.
Between February 1980 and June 1987, 42 shunts were placed in 39 infants with pulmonary atresia: 33 were modified Blalock-Taussig shunts with polytetrafluoroethylene (PTFE) and 9 were classic Blalock-Taussig shunts. There were four hospital deaths not related to the shunts. The remaining 35 patients were followed up for 1.
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