Diabetes technology & therapeutics · 2012
Rate of hypoglycemia in insulin-treated patients with type 2 diabetes can be predicted from glycemic variability data.
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Qu Yongming, Jacober Scott J, Zhang Qianyi, Wolka Linda L, DeVries J Hans
Аннотация
BACKGROUND: We set out to study the relationship between different measures of glycemic variability and the rate of hypoglycemia in patients with type 2 diabetes.
SUBJECTS AND METHODS: Data were pooled from three 24-week insulin trials including patients on twice-daily (BID) insulin lispro mix 75/25 (75% insulin lispro protamine suspension, 25% insulin lispro) (n=805), daily (QD) insulin glargine (n=1,019), insulin lispro protamine suspension (n=353) (QD or BID), and insulin detemir (n=166) (QD or BID), all with continuation of prestudy oral antihyperglycemic medications. Glycemic variability measures were derived from seven-point self-monitored blood glucose profiles.
RESULTS: At baseline, mean (±SD) age was 56.9±9.7 years, duration of type 2 diabetes was 9.5±6.1 years, hemoglobin A1c (HbA1c) was 8.9±1.1%, and 51.9% were male. Intra-day glucose coefficient of variation (CV), fasting blood glucose, intra-day minimum glucose and inter-day glucose CV at 24 weeks, and intra-day glucose CV at baseline were significantly correlated with the rate of hypoglycemia events between Weeks 12 to 24 (P<0.05 for all measures).
CONCLUSIONS: Intra-day and inter-day glycemic variability is significantly associated with the risk of hypoglycemia in insulin-treated patients with type 2 diabetes, even after adjusting for mean glucose and HbA1c. The intra-day glycemic variability before starting insulin is significantly associated with the risk of hypoglycemia during insulin treatment, which points at treatment- and patient-related factors mediating this relationship.
SUBJECTS AND METHODS: Data were pooled from three 24-week insulin trials including patients on twice-daily (BID) insulin lispro mix 75/25 (75% insulin lispro protamine suspension, 25% insulin lispro) (n=805), daily (QD) insulin glargine (n=1,019), insulin lispro protamine suspension (n=353) (QD or BID), and insulin detemir (n=166) (QD or BID), all with continuation of prestudy oral antihyperglycemic medications. Glycemic variability measures were derived from seven-point self-monitored blood glucose profiles.
RESULTS: At baseline, mean (±SD) age was 56.9±9.7 years, duration of type 2 diabetes was 9.5±6.1 years, hemoglobin A1c (HbA1c) was 8.9±1.1%, and 51.9% were male. Intra-day glucose coefficient of variation (CV), fasting blood glucose, intra-day minimum glucose and inter-day glucose CV at 24 weeks, and intra-day glucose CV at baseline were significantly correlated with the rate of hypoglycemia events between Weeks 12 to 24 (P<0.05 for all measures).
CONCLUSIONS: Intra-day and inter-day glycemic variability is significantly associated with the risk of hypoglycemia in insulin-treated patients with type 2 diabetes, even after adjusting for mean glucose and HbA1c. The intra-day glycemic variability before starting insulin is significantly associated with the risk of hypoglycemia during insulin treatment, which points at treatment- and patient-related factors mediating this relationship.