If orthopnea causes awakening during the night and is relieved by sitting, it is called paroxysmal nocturnal dyspnea.
如果端坐呼吸引起夜间觉醒，经坐起缓
，
阵发性夜间呼吸困难。
If orthopnea causes awakening during the night and is relieved by sitting, it is called paroxysmal nocturnal dyspnea.
如果端坐呼吸引起夜间觉醒，经坐起缓，阵发性夜间呼吸困难。
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