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Diabetes Technol Ther. 2004 Feb;6(1):9-15.

Glycemic parameters with multiple daily injections using insulin glargine versus insulin pump.

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Department of Medicine, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA.


This study compared external insulin pump treatment using insulin lispro or insulin aspart with multiple daily injections (MDI; four or more injections per day) using insulin glargine and insulin lispro or insulin aspart. An electronic database was used to retrieve various parameters of glycemic control for 515 adult patients with type 1 diabetes. An insulin pump was used by 216 patients, and 299 patients were taking insulin glargine for at least 6 months. The mean age (approximately 33 years), duration of diabetes (approximately 16 years), and duration of treatment (approximately 12 months) were similar for both the pump and insulin glargine groups. The mean (+/-SEM) A1C values were significantly reduced in both groups from the baseline to the end of the study (7.7 +/- 0.1% to 7.5 +/- 0.1% for the pump group and 8.0 +/- 0.1% to 7.7 +/- 0.1% for the insulin glargine group, P< 0.001) with similar weight gain (P> 0.05) in both groups. The insulin glargine group significantly reduced basal insulin intake at follow-up. The premeal boluses were similar throughout the study for both groups. The subjects reporting severe hypoglycemic episodes were similar in the two groups; however, there were 12 cases of diabetic ketoacidosis reported in the pump group and none in the insulin glargine group. Patients with type 1 diabetes can achieve similar glycemic control using insulin glargine with premeal insulin lispro or by using an external infusion pump with insulin lispro or insulin aspart. However, costs and episodes of diabetic ketoacidosis are significantly higher for insulin pump users.

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