orthopnea
  端坐呼吸
  or·thop·nea /ɔrˈθɑpnɪə , ˌɔrˌθɑpˈnɪə/ 名詞
  端坐呼吸
  orthopnea
       n : form of dyspnea in which the person can breathe comfortably
           only when standing or sitting erect; associated with
           asthma and emphysema and angina pectoris