• Irl B Hirsch, Bruce W Bode, Satish Garg, Wendy S Lane, Allen Sussman, Peter Hu, Olga M Santiago, Jerzy W Kolaczynski, and Insulin Aspart CSII/MDI Comparison Study Group.
• University of Washington, Seattle, WA, USA. ihirsch@u.washington.edu
• Diabetes Care. 2005 Mar 1; 28 (3): 533-8.

ObjectiveMultiple daily injection (MDI) therapy of bolus insulin aspart and basal insulin glargine was compared with continuous subcutaneous insulin infusion (CSII) with aspart in type 1 diabetic patients previously treated with CSII.Research Design And MethodsOne hundred patients were enrolled in a randomized, multicenter, open-label, crossover study. After a 1-week run-in period with aspart by CSII, 50 subjects were randomly assigned to MDI therapy (aspart immediately before each meal and glargine at bedtime) and 50 subjects continued CSII. After 5 weeks of the first treatment, subjects crossed over to the alternate treatment for 5 weeks. During the last week of each treatment period, subjects wore a continuous glucose monitoring system for 48-72 h.ResultsMean serum fructosamine levels were significantly lower after CSII therapy than after MDI therapy (343 +/- 47 vs. 355 +/- 50 micromol/l, respectively; P = 0.0001). Continuous glucose monitoring profiles over a 24-h time period showed that glucose exposure was 24 and 40% lower for CSII than MDI as measured by area under the curve (AUC) glucose >/=80 mg/dl (1,270 +/- 742 vs. 1,664 +/- 1,039 mg . h . dl(-1); P < 0.001) and AUC glucose >/=140 mg/dl (464 +/- 452 vs. 777 +/- 746 mg . h . dl(-1), CSII vs. MDI, respectively; P < 0.001). Similar percentages of subjects reported hypoglycemic episodes (CSII: 92%, MDI: 94%) and nocturnal (12:00 a.m. to 8:00 a.m.) hypoglycemic episodes (CSII: 73%, MDI: 72%). Major hypoglycemia was infrequent (CSII: two episodes, MDI: five episodes).ConclusionsIn a trial of short duration, CSII therapy with insulin aspart resulted in lower glycemic exposure without increased risk of hypoglycemia, as compared with MDI with insulin aspart and glargine.

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