• A J Maneker, E M Petrack, and S E Krug.
• Department of Pediatrics, Rainbow Babies and Childrens Hospital, Cleveland, OH.
• Ann Emerg Med. 1995 Jan 1; 25 (1): 36-40.

Study ObjectiveTo determine whether routine pulse oximetry in a pediatric emergency department can be used to identify patients with a low oxygen saturation (SaO2) that is unexpected on the basis of clinical evaluation.DesignProspective comparison of blinded, clinical evaluation by physicians with subsequent pulse oximetry readings.SettingPediatric ED in an urban, university medical center.ParticipantsA convenience sample of 368 patients presenting to the pediatric ED with respiratory illnesses.MethodsThe history, physical examination, pediatric ED management, and therapy were recorded. Based on clinical assessment, the physician was asked whether the patient had a low SaO2 (< or = 92%). Room-air pulse oximetry was then obtained, with subsequent treatment and management plans recorded.ResultsClinical assessment had a sensitivity of 33%, specificity of 86%, negative predictive value of 85%, and positive predictive value of 35% for detecting children with low SaO2. Unexpected low SaO2 usually led to a change in patient management or disposition.ConclusionClinical evaluation in a pediatric ED does not screen adequately for the detection of hypoxemia and should be supplemented by routine pulse oximetry in all patients with respiratory findings.

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