Collett and Edwards classification of truncus arteriosus (diagram)
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Collett and Edwards classification of truncus arteriosus (diagram)
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This diagram depicts the classification of truncus arteriosus devised by Collett and Edwards:
- type I: aorta and main pulmonary artery share a common arterial trunk
- type II: right and left pulmonary arteries arise separately from the posterior part of truncus
- type III: separate origins of the pulmonary arteries from the lateral aspect of the truncus
- type IV: neither pulmonary arterial branch arising from the common trunk with the lungs supplied by collaterals (pseudotruncus)
(AA - ascending aorta; DA - descending aorta; MPA - main pulmonary artery; RPA - right pulmonary artery; LPA - left pulmonary artery; PDA - patent ductus arteriosus; VSD - ventricular septal defect; RA - right atrium; LA - left atrium; RV - right ventricle; LV - left ventricle)
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