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Canadian Journal of Anesthesia, Vol 39, 454-457, Copyright © 1992 by Canadian Anesthesiologists' Society

ARTICLES

Tongue oximetry in children with extensive thermal injury: comparison with peripheral oximetry

CJ Cote, AL Daniels, M Connolly, SK Szyfelbein and CD Wickens
Department of Anaesthesia, Harvard Medical School, Massachusetts General Hospital, Boston.

We undertook a prospective study of standard peripheral pulse oximetry versus a modified pulse oximeter probe applied to the tongue in order to determine the efficacy of this alternative monitoring site in children with thermal injuries. Ten patients with a mean age (+/- SD) of 7.5 +/- 4.5 yr were studied on 15 occasions. The mean weight (+/- SD) was 31.4 +/- 13.7 kg and percent surface area burn (+/- SD) was 56 +/- 21%. A total of 1,992 min of anaesthesia time was monitored. Both sites functioned simultaneously 47% of the time; the lingual but not the peripheral site functioned 28% of the time and only the peripheral site and not the lingual functioned 22% of the time. Neither site functioned 3% of the time. The tongue oximeter provided 563 min more monitoring time than the peripheral sites. The tongue oximeter also functioned in children with peripheral vasoconstriction when the peripheral sensor failed and was less susceptible to electrocautery interference. The tongue oximeter is a reasonable adjunct but not a substitute for peripheral oximetry since its application is limited to paralyzed, intubated patients.




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Copyright © 1992 by the Canadian Anesthesiologists' Society.