A randomized, prospective trial comparing the efficacy of continuous subcutaneous insulin infusion with multiple daily injections using insulin glargine.
OBJECTIVE
The efficacy of the insulin analogs now available for multiple daily injection (MDI) and continuous subcutaneous insulin infusion (CSII) therapy in type 1 diabetes has not yet been established in pediatric patients. Our principal aim in this short-term study was to compare the efficacy of CSII to MDI with glargine in lowering HbA(1c) levels in children and adolescents with type 1 diabetes.


METHODS
Thirty-two youth with type 1 diabetes (age 8-21 years) were randomly assigned to receive either MDI treatment with once-daily glargine and premeal/snack insulin aspart or CSII with insulin aspart. Dose titration in both groups was based on home self-monitored blood glucose measurements and monthly HbA(1c). HbA(1c), total daily insulin dose (TDD), self-monitored blood glucose readings, and adverse events were compared after 16 weeks of therapy.


RESULTS
While there was no significant change in the glargine group (HbA(1c) 8.2% at baseline vs. 8.1% at 16 weeks), youth randomized to CSII had a sharp reduction in HbA(1c) levels, from 8.1 to 7.2% after 16 weeks of therapy (P < 0.02 vs. baseline and <0.05 vs. glargine group). TDD was unchanged in the glargine group, but significantly dropped with CSII (1.4 units/kg at baseline vs. 0.9 units/kg at 16 weeks, P < 0.01). Both groups had similar basal doses and insulin-to-carbohydrate ratios. Fasting self-monitored blood glucose was similar in both groups, but lunch, dinner, and bedtime readings were significantly lower in the CSII group (P < 0.01).


CONCLUSIONS
Lower HbA(1c) and premeal glucose levels were more achievable in this short-term study with CSII than with glargine-based MDI treatment. CSII is an efficacious treatment to improve metabolic control in youth with type 1 diabetes.
Doyle
Elizabeth A
EA
Department of Pediatrics and Children's Clinical Research Center, Yale University School of Medicine, New Haven, Connecticut, USA. elizabeth.doyle@yale.edu
Weinzimer
Stuart A
SA
Steffen
Amy T
AT
Ahern
Jo Ann H
JA
Vincent
Miranda
M
Tamborlane
William V
WV
D000293:Adolescent; D000328:Adult; D015190:Blood Glucose Self-Monitoring; D002648:Child; D003922:Diabetes Mellitus, Type 1 / Q000097:blood / Q000188:drug therapy*; D004334:Drug Administration Schedule; D006442:Glycated Hemoglobin / Q000378:metabolism; D006801:Humans; D007004:Hypoglycemic Agents / Q000008:administration & dosage* / Q000627:therapeutic use; D007279:Injections, Subcutaneous; D007328:Insulin / Q000008:administration & dosage* / Q000031:analogs & derivatives* / Q000627:therapeutic use; D000069036:Insulin Glargine; D007332:Insulin Infusion Systems; D049528:Insulin, Long-Acting; D018579:Patient Selection; D019518:Postprandial Period
D006442:Glycated Hemoglobin; D007004:Hypoglycemic Agents; D007328:Insulin; D000069036:Insulin Glargine; D049528:Insulin, Long-Acting