Journal
DIABETES CARE
Volume 38, Issue 7, Pages 1197-1204Publisher
AMER DIABETES ASSOC
DOI: 10.2337/dc14-3053
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Funding
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) [R01-DK-085591]
- JDRF [22-2013-266, 80-2010-585]
- JDRF Canadian Clinical Trial Network
- JDRF International
- JDRF-Canada
- Federal Economic Development Agency for Southern Ontario (FedDev Ontario)
- NIDDK
- JDRF
- FedDev Ontario
- National Institutes of Health (NIH)
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OBJECTIVENocturnal hypoglycemia can cause seizures and is a major impediment to tight glycemic control, especially in young children with type 1 diabetes. We conducted an in-home randomized trial to assess the efficacy and safety of a continuous glucose monitor-based overnight predictive low-glucose suspend (PLGS) system.RESEARCH DESIGN AND METHODSIn two age-groups of children with type 1 diabetes (11-14 and 4-10 years of age), a 42-night trial for each child was conducted wherein each night was assigned randomly to either having the PLGS system active (intervention night) or inactive (control night). The primary outcome was percent time <70 mg/dL overnight.RESULTSMedian time at <70 mg/dL was reduced by 54% from 10.1% on control nights to 4.6% on intervention nights (P < 0.001) in 11-14-year-olds (n = 45) and by 50% from 6.2% to 3.1% (P < 0.001) in 4-10-year-olds (n = 36). Mean overnight glucose was lower on control versus intervention nights in both age-groups (144 18 vs. 152 +/- 19 mg/dL [P < 0.001] and 153 +/- 14 vs. 160 +/- 16 mg/dL [P = 0.004], respectively). Mean morning blood glucose was 159 +/- 29 vs. 176 +/- 28 mg/dL (P < 0.001) in the 11-14-year-olds and 154 +/- 25 vs. 158 +/- 22 mg/dL (P = 0.11) in the 4-10-year-olds, respectively. No differences were found between intervention and control in either age-group in morning blood ketosis.CONCLUSIONSIn 4-14-year-olds, use of a nocturnal PLGS system can substantially reduce overnight hypoglycemia without an increase in morning ketosis, although overnight mean glucose is slightly higher.
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