...：正常人在剧烈运动时也有呼吸困难感觉，停止运动后很快恢复。心脏病患者在常人不会发生呼吸困难的活动量时出现症状，而且恢复慢甚至于不恢复。 2。端坐呼吸（orthopnea）：患者表现不能平卧或不能长时间地平卧，斜靠位甚至于端坐，双下肢垂于床边。
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Severe orthopnea was complained half a year later, and congestive heart failure was suspected, but clinical data did not support this diagnosis.
半年后，因为严重的端坐呼吸，又到医院求诊，当时怀疑患有心脏衰竭，但临床证据并不支持此项诊断。
We report a rare case of a 26-year-old primigravida at 34 weeks' gestation complicated with malignant lymphoma presenting as severe dyspnea and orthopnea.
我们报告一个罕见病例，26岁初产妇于怀孕34周并发恶性林巴瘤以严重呼吸困难及端坐呼吸为表现。
Dyspnea due to elevated pulmonary venous pressure and pulmonary edema is increased in the recumbent position and decreased by sitting or standing (orthopnea).
由肺水肿和肺静脉压升高引起的呼吸困难在卧位时加剧，在坐位，立位（端坐呼吸）时减轻。
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