Contribution of basal and postprandial hyperglycaemia in type 2 diabetes patients treated by an intensified insulin regimen: Impact of pump therapy in the OPT2mise trial

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Abstract

Aims: The relative contribution of basal hyperglycaemia (BHG) and postprandial hyperglycaemia (PPHG) in type 2 diabetes patients treated with multiple daily injections (MDI) of insulin is poorly documented. In this study, the BHG and PPHG of patients from the OPT2mise study who were initially treated with MDI were assessed before randomization and again after 6 months of continuous subcutaneous insulin infusion (CSII). Materials and Methods: Blinded continuous glucose monitoring (CGM) data were collected in 259 MDI patients after completion of an 8-week run-in period. The hyperglycaemic area under the curve (AUC) during the 24-hour basal period (AUC-B) and the postprandial period (AUC-P) were compared with analysis of variance based on contribution to total hyperglycaemia in HbA1c groups (Group 1, <8%; Group 2, 8%-8.4%; Group 3, 8.5%-8.9%; Group 4, 9%-9.4%; Group 5, ≥9.5%). Changes in AUC-B and AUC-P were assessed after 6 months of pump therapy in 131 randomized participants with available CGM recordings. Results: In patients undergoing MDI therapy, AUC-B was 21.6% to 54.8% lower in Group 4 to 1 (P =.0138 and P =.0002, respectively) in comparison to Group 5. In contrast, AUC-P did not differ among HbA1c groups (P =.1009). HbA1c correlated with AUC-B, but not with AUC-P. After switching to CSII, AUC-B and AUC-P decreased by 21% and 17%, respectively. When comparing responders with non-responders to CSII therapy, no between-group differences were observed in AUC-B and AUC-P. Conclusions: Basal hyperglycaemia is the major determinant of overall exposure to hyperglycaemia in type 2 diabetes with MDI failure.

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Reznik, Y., Habteab, A., Castaneda, J., Shin, J., & Joubert, M. (2018). Contribution of basal and postprandial hyperglycaemia in type 2 diabetes patients treated by an intensified insulin regimen: Impact of pump therapy in the OPT2mise trial. Diabetes, Obesity and Metabolism, 20(10), 2435–2441. https://doi.org/10.1111/dom.13398

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