medical Definition of orthopnea
: difficulty in breathing that occurs when lying down and is relieved upon changing to an upright position (as in congestive heart failure)
Medical Dictionary
orthopnea
noun
or·thop·nea
variants:
or chiefly British
orthopnoea
\ȯr-ˈthäp-nē-ə also ˌȯr-ˌthäp-ˈnē-ə\
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