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114 children with bronchiolitis had end tidal carbon dioxide (ETCO2) measured on presentation to the ED. The ETCO2 levels did not differ significantly between admitted and discharged patients. In the subset of admitted patients, there was no correlation with ETCO2 on admission and days of oxygen requirement or length of stay.
Bottom line: Initial ETCO2 does not predict outcome for patients with bronchiolitis.
References
Jacob R, Bentur L, Brik R, Shavit I and Hakim F. Is capnometry helpful in children with bronchiolitis? Respir Med 2016; 113:37-41.