Central pulmonary artery anatomy in right ventricular outflow tract obstructions

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dc.contributorHarikrishnan, S
dc.contributorTharakan, J
dc.contributorTitus, T
dc.contributorBhat, A
dc.contributorSivasankaran, S
dc.contributorBimal, F
dc.contributorSunder, KRS
dc.date.accessioned2012-12-04T11:43:35Z
dc.date.available2012-12-04T11:43:35Z
dc.date.issued2000
dc.description.abstractWe reviewed the cine-angiograms of 190 patients with right ventricular outflow tract (RVOT) obstructions for size and anatomy of pulmonary arteries, patent ductus arteriosus (PDA) acid major aorto pulmonary collateral arteries (MAPCAs). Patients were grouped into three, Tetralogy of Fallot (TOF) with pulmonary atresia (group 1, N=86), TOF with pulmonary stenosis (group 2, N=97) and 7 cases of pulmonary atresia with intact interventricular septum (group 3). Out of 86 patients in group 1, 49 had PDA alone, 30 had MAPCAs alone, six had both and one had none. In group 2, 31 patients had persistent PDA and one patient had MAPCAS and PDA. A discrete stenosis (DS) of pulmonary artery was seen significantly more in patients with RVOT obstructions associated with PDA compared to patients without PDA (67/84 vs. 5/96). Out of the 84 cases with ducti, 53 had stenosis of the pulmonary artery at the site of ductus insertion. Thus presence of PDA was an important factor in the development of DS. The likely cause of pulmonary artery stenosis in TOF with PDA may be the opposing flows through RVOT and PDA producing a watershed effect at the ductus-pulmonary artery junction. Diffuse hypoplasia of pulmonary arteries (DH) was seen more significantly in RVOT obstructions associated with MAPCAs, compared to other patient groups (19/36 vs. 14/87). These small pulmonary arteries had no discrete stenosis and this diffuse hypoplasia might be the result of inadequate blood flow during intrauterine life. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.
dc.identifier.citationINTERNATIONAL JOURNAL OF CARDIOLOGY. 73; 3; 225-230en_US
dc.identifier.urihttp://dx.doi.org/10.1016/S0167-5273(00)00219-9
dc.identifier.urihttp://www.ncbi.nlm.nih.gov/pubmed/10841963
dc.identifier.urihttps://dspace.sctimst.ac.in/handle/123456789/219
dc.publisherINTERNATIONAL JOURNAL OF CARDIOLOGY
dc.subjectCardiology
dc.titleCentral pulmonary artery anatomy in right ventricular outflow tract obstructions
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