DOI: 10.2337/dc06-1141 © 2006 by the American Diabetes Association
Durability of Insulin Pump Use in Pediatric Patients With Type 1 DiabetesFrom the Pediatric, Adolescent, and Young Adult Section, Genetics and Epidemiology Section, Joslin Diabetes Center, Boston, Massachusetts Address correspondence and reprint requests to Lori M.B. Laffel, MD, MPH, Pediatric, Adolescent, and Young Adult Section, Genetics and Epidemiology Section, Joslin Diabetes Center, One Joslin Place, Boston, MA 02215. E-mail: lori.laffel{at}joslin.harvard.edu OBJECTIVETo examine longitudinal outcomes, rate of and reasons for discontinuation, and predictors of insulin pump success in a cohort of youth initiating pump therapy. RESEARCH DESIGN AND METHODSWe followed a cohort of youth with type 1 diabetes (n = 161) starting the pump between 1998 and 2001 and recorded natural history of treatment. RESULTSAt pump start, patients (71% female) had a mean age of 14.1 ± 3.7 years, diabetes duration of 7.1 ± 4.0 years, daily blood glucose monitoring (BGM) frequency of 4.0 ± 1.2, a daily insulin dose of 1.0 ± 0.3 units/kg, and an HbA1c (A1C) of 8.4 ± 1.4%. After 1 year, mean daily BGM frequency was 4.5 ± 1.7, daily insulin dose was 0.8 ± 0.2 units/kg, and A1C was 8.1 ± 1.3% (all baseline versus 1-year data, P < 0.01). As of 2005, 29 patients (18%) had resumed injection therapy at a mean age of 17.0 ± 2.9 years after a mean duration of pump use of 2.1 ± 1.3 years. BGM frequency at baseline and at 1 year was significantly lower in the patients who resumed injection therapy (P < 0.02). In addition, patients who remained on the pump had lower A1C than those who resumed injection therapy at both 1 year (P = 0.04) and at the most recent clinic visit (P = 0.01). CONCLUSIONSAfter an average of 3.8 years, >80% of pediatric patients maintained pump therapy with preservation of baseline A1C. Patients discontinuing the pump were less adherent and did not achieve equivalent glycemic benefit compared with continued users; these patients require ongoing support aimed at improving adherence and outcomes.
Abbreviations: BGM, blood glucose monitoring CSII, continuous subcutaneous insulin infusion
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