What question did this study set out to answer?

This evaluation aimed to assess the accuracy of the Biox IIA Ear Oximeter in measuring arterial oxygen saturation (SaO2) in critically ill patients.

Clinical Evaluation of the Biox IIA Ear Oximeter in the Critical Care Environment

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Clinical evaluation shows accurate arterial oxygen saturation measurement in critically ill patients, suggesting potential for effective monitoring.

This evaluation aimed to assess the accuracy of the Biox IIA Ear Oximeter in measuring arterial oxygen saturation (SaO2) in critically ill patients.
Conducted simultaneous arterial blood sampling and oximetry in 79 patients from critical care units.
Measured a total of 187 oximeter readings with acceptable data from 173 measurements.
Biox IIA SaO2 ranged from 72.0 to 100.0%, with a mean difference of +0.34% compared to blood samples.
Correlation coefficient of overall measurements was high at 0.913, indicating strong accuracy.
Significant correlation (r = 0.875) noted in data where blood SaO2 was < 90%.

Cecil et al. (1985) studied this question.

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Clinical evaluation shows accurate arterial oxygen saturation measurement in critically ill patients, suggesting potential for effective monitoring.