Diabetes Care, Vol 17, Issue 10 1110-1123, Copyright © 1994 by American Diabetes Association

ARTICLES

The effect of recurrent practice at home on the acceptability of capillary blood glucose readings. Accuracy of self blood glucose testing

UM Kabadi, KM O'Connell, J Johnson and M Kabadi
Medical Service, Carl T. Hayden VA Medical Center, Phoenix, Arizona 85012.

OBJECTIVE--To judge how reliably patients perform capillary blood glucose testing over time with recurrent practice at home and to assess if a clinic glucose meter is an acceptable alternative to the clinical laboratory for monitoring patient performance. RESEARCH DESIGN AND METHODS--We compared capillary blood glucose readings obtained by patients with their own equipment and the venous blood glucose determinations by the clinical laboratory at three biweekly visits during the initial phase in 40 subjects attending the diabetes clinic at the Veterans' Affairs Medical Center in Phoenix, Arizona. We also compared patient-generated readings using their own equipment and the readings obtained by the clinic glucose meter and strips at five weekly visits during the second phase in 11 subjects who continued further participation. Error grid analysis was used for both comparisons. Capillary blood glucose readings obtained with clinic glucose meter and strips on one hand were correlated with venous blood glucose levels determined by the clinical laboratory. RESULTS--During the initial phase, 30 subjects consistently obtained clinically acceptable comparisons (zone A on the error grid, i.e., within 20% of the laboratory value) or improved over time, 9 subjects showed deterioration, and 1 subject failed to obtain zone A results on any of the visits. Three subjects who had consistently obtained zone A results during the initial phase maintained their performance, whereas eight subjects who had failed to achieve zone A values by the end of the initial phase gradually improved and ultimately achieved zone A values by the end of the study. A highly significant correlation was noted between clinic meter readings and laboratory values (r = 0.93, P < 0.00001). CONCLUSIONS--Clinically acceptable user proficiency in capillary blood glucose testing can be maintained in most subjects, with recurrent intensive education during follow-up clinic visits. Therefore, we recommend that these comparisons be performed and patient's technique be observed at each visit to monitor their performance. The clinic glucose meter is a suitable alternative to a clinical laboratory for user proficiency checks.
CiteULike    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				P. Hollander Anti-Diabetes and Anti-Obesity Medications: Effects on Weight in People With Diabetes Diabetes Spectr, July 1, 2007; 20(3): 159 - 165. [Abstract] [Full Text] [PDF]

				D. E. Goldstein, R. R. Little, R. A. Lorenz, J. I. Malone, D. Nathan, C. M. Peterson, and D. B. Sacks Tests of Glycemia in Diabetes Diabetes Care, July 1, 2004; 27(7): 1761 - 1773. [Full Text] [PDF]

				K. Mulcahy, M. Maryniuk, M. Peeples, M. Peyrot, D. Tomky, T. Weaver, and P. Yarborough Diabetes Self-Management Education Core Outcomes Measures The Diabetes Educator, September 1, 2003; 29(5): 768 - 803. [PDF]