When there is a large defect between the atria, a large amount of oxygen-rich (red) blood leaks from the heart's left side back to the right side.
当发生较大的房间隔缺损时，大量的氧合血(红色)通过缺损进入到右房。
When there is a large defect between the atria, a large amount of oxygen-rich (red) blood leaks from the heart's left side back to the right side.
当发生较大的房间隔缺损时，大量的氧合血(红色)通过缺损进入到右房。
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