When the ductus arteriosus stays open oxygen-rich (red) blood passes from the aorta to the pulmonary artery mixing with the oxygen-poor (blue) blood already flowing to the lungs.

　
英 美
  • 如動(dòng)脈導管持續開(kāi)放，主動(dòng)脈來(lái)的富氧血（通過(guò)動(dòng)脈導管）進(jìn)入肺動(dòng)脈，與已經(jīng)流入肺的乏氧血混合。
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