end-tidal
adjective
\ ˈend-ˌtīd-ᵊl
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Medical Definition of end-tidal
: of or relating to the last portion of expired tidal air
End-tidal carbon dioxide monitors are already being used and are recommended to indicate the adequacy of cardiopulmonary resuscitation and the likelihood of a successful resuscitation.— Mickey S. Eisenberg and Terry J. Mengert, The New England Journal of Medicine, 26 Apr. 2001