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The Use of GLP 1 Analogues

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Introductions and evidence supporting use of GLP 1 analogues Patients with type 2 diabetes are at risk of macrovascular and microvascular complications. Evidence has shown that an improvement in blood glucose control, as shown by a reduction in HbA1c levels, is associated with a reduction in microvascular complications (2,3,4). Evidence from ACCORD (2), UKPDS(3) and ADVANCE(4) suggests that intensive blood glucose control reduced composite endpoints for microvascular outcomes, but the impact on patient oriented outcomes such as renal failure or dialysis or blindness is uncertain. The ACCORD study found that intensive blood glucose control improved visual acuity. A meta-analysis of large randomised trials (CONTROL) showed that more intensive blood glucose control (average difference between intensive and standard care groups 9mmol/mol (0.9%)) showed some reduction in cardiovascular (CV) outcomes, mainly by a reduced risk of myocardial infarction (MI). The number needed to treat (NNT) to prevent one CV event is 119 (compared with NNT for blood pressure reduction of 34, and management of cholesterol of 44), hence the need to ensure that these patients have optimally managed blood pressure and cholesterol prior to adding in GLP-1 analogues for which we do not have evidence of patient oriented outcomes. Data from the national audit of GLP-1 analogue use by the ABCD has shown that it can take longer than 6 months for the benefits of GLP-1 analogue therapy on disease oriented

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