，
;If orthopnea causes awakening during the night and is relieved by sitting, it is called paroxysmal nocturnal dyspnea.
如果端坐
吸引起夜间觉醒，经坐起缓解，是为阵发性夜间吸困
。
吸If orthopnea causes awakening during the night and is relieved by sitting, it is called paroxysmal nocturnal dyspnea.
如果端坐吸引起夜间觉醒，经坐起缓解，是为阵发性夜间吸困。
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