Sustained impact of real-time continuous glucose monitoring in adults with type 1 diabetes on insulin pump therapy: Results after 24 months RESCUE study
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Research Design and Methods: This 24-month, prospective, observational, cohort study followed 441 adults with insulin pumps receiving full reimbursement for rtCGM. Forty-two percent had IAH. Primary endpoint was evolution of HbA1c, with secondary endpoints change in acute hypoglycemia complications, diabetes-related work absenteeism, and quality of life (QOL) scores. Additionally, we evaluated if people could achieve glycemic consensus targets during follow-up.
Results: After 24 months, HbA1c remained significantly lower compared to baseline (7.64% [60 mmol/mol] vs 7.37% [57 mmol/mol], p<0.0001). Sustained benefits were also observed for the score on the hypoglycemia fear survey and hypoglycemia-related acute complications irrespective of hypoglycemia awareness level. People with IAH had the strongest improvement, especially for severe hypoglycemia (862 events year before vs 119 events per 100 patient-years in second year, p<0.0001). Over 24 months, more people were able to meet hypoglycemia consensus targets at the expense of slightly less people achieving hyperglycemia consensus targets. Furthermore, the number of people with HbA1c <7% (<53 mmol/mol) without severe hypoglycemia events more than doubled (11.0% vs 25.4%, p<0.0001).
Conclusion: Use of rtCGM led to sustained improvements in hypoglycemia-related glucose control over 24 months. Lower fear of hypoglycemia, less acute hypoglycemia-related events and diabetes-related days off work were observed, particularly in those with IAH.