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，经坐起缓解，是为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，经坐起缓解，是为阵发性夜间呼吸困难。
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