Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists · 2015
FASTING VERSUS POSTPRANDIAL HYPERGLYCEMIA AS A TREATMENT TARGET TO LOWER ELEVATED HEMOGLOBIN A1C.
СтатьяМетаанализПоддержка исследования: вне правительства СШАНазвание и аннотация: Перевод пока не подготовлен
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Shaefer Charles, Reid Timothy, Vlajnic Aleksandra, Zhou Rong, DiGenio Andres
Аннотация
OBJECTIVE: Postprandial hyperglycemia (PPHG) may need addressing when glycemic control cannot be maintained in patients with type 2 diabetes mellitus. We investigated whether glycated hemoglobin A1c (A1c) levels ≥7.0% can indicate postprandial defects warranting prandial therapy after optimized basal insulin therapy.
METHODS: From 6 clinical trials of insulin glargine treatment, data were pooled from 496 patients with A1c ≥7.0% after 24 weeks. Patient characteristics and clinical outcomes were summarized according to fasting plasma glucose (FPG) target achievement (<130 mg/dL), postprandial blood glucose (PPBG) levels, and PPBG increments (ΔPPBG). Basal and postprandial contributions to hyperglycemia were determined.
RESULTS: After 24 weeks of insulin glargine titration, A1c change from baseline was greater in patients with FPG <130 mg/dL versus ≥130 mg/dL (-1.35% versus -1.11%, respectively; P = .0275), but with increased confirmed hypoglycemia rates (blood glucose <70 mg/dL; 4.06 events/patient-year versus 3.31 events/patient-year; P = .0170). However, increased severe hypoglycemia rates were observed in patients with FPG ≥130 mg/dL. At week 24, postprandial contributions to hyperglycemia increased (>60% regardless of PPBG). Patients with high FPG had lower, but substantial, relative postprandial contributions versus patients achieving FPG target. A similar pattern was observed according to whether patients had a ΔPPBG ≥50 mg/dL after any meal.
CONCLUSION: After optimized basal insulin therapy, elevated A1c is the most effective indicator of residual PPHG, regardless of existent FPG or PPBG. When confronted with an uncontrolled A1c after reasonable titration of basal insulin, clinicians should be aware of probable postprandial contributions to hyperglycemia and consider prandial therapy.
METHODS: From 6 clinical trials of insulin glargine treatment, data were pooled from 496 patients with A1c ≥7.0% after 24 weeks. Patient characteristics and clinical outcomes were summarized according to fasting plasma glucose (FPG) target achievement (<130 mg/dL), postprandial blood glucose (PPBG) levels, and PPBG increments (ΔPPBG). Basal and postprandial contributions to hyperglycemia were determined.
RESULTS: After 24 weeks of insulin glargine titration, A1c change from baseline was greater in patients with FPG <130 mg/dL versus ≥130 mg/dL (-1.35% versus -1.11%, respectively; P = .0275), but with increased confirmed hypoglycemia rates (blood glucose <70 mg/dL; 4.06 events/patient-year versus 3.31 events/patient-year; P = .0170). However, increased severe hypoglycemia rates were observed in patients with FPG ≥130 mg/dL. At week 24, postprandial contributions to hyperglycemia increased (>60% regardless of PPBG). Patients with high FPG had lower, but substantial, relative postprandial contributions versus patients achieving FPG target. A similar pattern was observed according to whether patients had a ΔPPBG ≥50 mg/dL after any meal.
CONCLUSION: After optimized basal insulin therapy, elevated A1c is the most effective indicator of residual PPHG, regardless of existent FPG or PPBG. When confronted with an uncontrolled A1c after reasonable titration of basal insulin, clinicians should be aware of probable postprandial contributions to hyperglycemia and consider prandial therapy.