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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Major aortopulmonary collateral artery ： ウィキペディア英語版 Major aortopulmonary collateral artery Major aortopulmonary collateral arteries (or MAPCAs) are arteries that develop to supply blood to the lungs when native pulmonary circulation is underdeveloped. Instead of coming from the pulmonary trunk, supply develops from the aorta and other systemic arteries. ==Pathogenesis and anatomy== Major aortopulmonary collateral arteries (MAPCAs) develop early in embryonic life but regress as the normal pulmonary arteries (vessels that will supply deoxygenated blood to the lungs) develop. In certain heart conditions the pulmonary arteries do not develop. The collaterals continue to grow, and can become the main supply of blood to the lungs. Though it is usually associated with congenital heart diseases with decreased pulmonary blood flow like tetralogy of Fallot or pulmonary atresia it may be seen sometimes in isolation ie not associated with any congenital heart disease in that case it is termed as isolated aortopulmonary collateral artery.〔http://ijmrhs.com/isolated-major-aortopulmonary-collateral-artery-causing-ccf-in-a-newborn-a-case-report/〕 In these cases it may be one of the cause of congestive cardiac failure in neonates.〔Dr Mohammed Ashfaque, dr pallavi p saple, dr arpita et al http://ijmrhs.com/isolated-major-aortopulmonary-collateral-artery-causing-ccf-in-a-newborn-a-case-report/〕 Pulmonary arteries come from the right side of the heart, and usually carry deoxygenated blood from the body. These collateral arteries carry blood which has already been oxygenated by the lungs, so are of little use in helping the body to get oxygen. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Major aortopulmonary collateral artery」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.