• K L Whyte, R Levin, and A Powls.
• Neonatology Department, Princess Royal Maternity Hospital, 16 Alexandra Parade, Glasgow G31 2ER, UK. karen.whyte@talk21.com
• Scot Med J. 2007 May 1;52(2):25-7.

BackgroundThe malposition of endotracheal tubes (ETTs) can be associated with endo-bronchial intubation or accidental extubation. A variety of methods have been reported for predicting insertional length (IL) including weight, nasal-tragus length (NTL) and sternal length (STL) measurements. In our unit no consistent predictor method was being used.AimTo audit the proportion of endotracheal tubes that required a significant position change after oral intubation. Our standard set was that the endotracheal tube should be in a satisfactory position in > 80% of cases. If not met, practice would then be re-audited after a consistent predictor method had been implemented.MethodsData regarding changes in endotracheal tube position were collected. Significant position changes were defined as adjustments > 0.5 cm.ResultsTwenty two babies were included in the initial audit, and only 73% of endotracheal tubes had a satisfactory position. Thirty six babies were included in the re-audit and when the nasal-tragus length predictor was used, 94% of endotracheal tubes had a satisfactory position, meeting the standard.ConclusionThe nasal-tragus length predictor improved the accuracy of endotracheal tube positioning after oral intubation. It is a simple, fast, reproducible method and can be used in everyday practice to help avoid significant endotracheal tube malposition.

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