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- Keith Roberts and Keith Porter.
- Surgical Rotation, Heartlands Hospital, Birmingham, UK. dr_keith@hotmail.com
- Resuscitation. 2003 Jan 1; 56 (1): 19-23.
ObjectiveTo measure an appropriately sized nasopharyngeal airway, it is taught that the size is related to the patients little finger or nostril (anterior nares). This study has been designed to identify whether these comparisons are valid.MethodDirect comparison of the dimensions of ten subjects' little fingers and anterior nares with the internal anatomy of their nose as visualised on coronal MRI scans.ResultsNeither method correlated statistically with the nasal anatomy of that subject.ConclusionsThe methods used traditionally to size a nasopharyngeal airway do not correlate with the airway anatomy and are unreliable. It is more appropriate to size the airway dependent upon the patient's size, sex and race.
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