Use of an Insulin Bolus Advisor Improves Glycemic Control in Multiple Daily Insulin Injection (MDI) Therapy Patients With Suboptimal Glycemic Control

First results from the ABACUS trial

  1. Robin S. Wagner, DVM, PHD10
  1. 1Diabetes Clinic for Children and Adolescents, Muenster, Germany
  2. 2Bournemouth Diabetes and Endocrine Centre, Royal Bournemouth Hospital, Bournemouth, U.K.
  3. 3Academic Department of Diabetes and Endocrinology, Queen Alexandra Hospital, Portsmouth, U.K.
  4. 4University of Southampton, Southampton General Hospital, Southampton, U.K.
  5. 5Royal Bournemouth Hospital, Castle Lane East, Bournemouth, U.K.
  6. 6Internistisches Fachaerztezentrum, Langen, Germany
  7. 7CGParkin Communications, Boulder City, Nevada
  8. 8Baseline Statistics GmbH, Frankfurt, Germany
  9. 9Roche Diagnostics GmbH, Mannheim, Germany
  10. 10Roche Diagnostics, Indianapolis, Indiana
  1. Corresponding author: Christopher G. Parkin, chris{at}


OBJECTIVE Use of automated bolus advisors is associated with improved glycemic control in patients treated with insulin pump therapy. We conducted a study to assess the impact of using an insulin bolus advisor embedded in a blood glucose (BG) meter on glycemic control and treatment satisfaction in patients treated with multiple daily insulin injection (MDI) therapy. The study goal was to achieve >0.5% A1C reduction in most patients.

RESEARCH DESIGN AND METHODS This was a 26-week, prospective, randomized, controlled, multinational study that enrolled 218 MDI-treated patients with poorly controlled diabetes (202 with type 1 diabetes, 16 with type 2 diabetes) who were 18 years of age or older. Participants had mean baseline A1C of 8.9% (SD, 1.2 [74 mmol/mol]), mean age of 42.4 years (SD, 14.0), mean BMI of 26.5 kg/m2 (SD, 4.2), and mean diabetes duration of 17.7 years (SD, 11.1). Control group (CNL) patients used a standard BG meter and manual bolus calculation; intervention group (EXP) patients used the Accu-Chek Aviva Expert meter with an integrated bolus advisor to calculate insulin dosages. Glucose data were downloaded and used for therapy parameter adjustments in both groups.

RESULTS A total of 193 patients (CNL, n = 93; EXP, n = 100) completed the study. Significantly more EXP than CNL patients achieved >0.5% A1C reduction (56.0% vs. 34.4%; P < 0.01). Improvement in treatment satisfaction (Diabetes Treatment Satisfaction Questionnaire scale) was significantly greater in EXP patients (11.4 [SD, 6.0] vs. 9.0 [SD, 6.3]; P < 0.01). Percentage of BG values <50 mg/dL was <2% in both groups during the study.

CONCLUSIONS Use of an automated bolus advisor resulted in improved glycemic control and treatment satisfaction without increasing severe hypoglycemia.

  • Received January 31, 2013.
  • Accepted May 31, 2013.

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  1. Diabetes Care
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