Precision and accuracy of capillary blood glucose measure ments performed by general staff nurses were assessed before and after a modest reeducation pro gram both with and without the use of reflectance meters. A total of 380 capillary glucose determinations were performed by nurses and the hospital laboratory on the same samples. Prior to reeducation, nurses using meters were more accurate than those reading visually, but no difference was found in precision. Reeducation improved precision equally in both groups while improving accuracy only in the group using meters. While glucose readings with the use of reflectance meters were statistically more accurate than those read visually, the percentage of readings within 10 % and 20 % of the laboratory readings was the same. Thus, the increased accuracy observed with meters may have little practical significance, suggesting that their use might better be based on other consider ations, such as user confidence, convenience, cost, and quality control. Periodic education is, however, an essential component of any quality assurance program.
A Milestone in Point of Care Capillary Blood Glucose Monitoring of Critically Ill Hospitalized Patients
