Journal of clinical monitoring
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Our objective was to compare the effect of protein and electrolyte changes associated with hemodilution on the accuracy of photometric and conductivity hemoglobin determination methods. ⋯ In the range of electrolyte and protein concentrations found in this study, the photometric method of hemoglobin assessment was more accurate than either corrected or uncorrected conductivity hemoglobin determinations, as compared to Coulter-based measurements.
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This is a report of a previously undescribed cause of oxygen supply failure during anesthesia, resulting from a worn main switch on a Narkomed 2A anesthesia machine (North American Dräger Information Systems, Telford, PA). The implications of this incident are discussed.