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Intensive glucose control and macrovascular outcomes in type 2 diabetes
1The George Institute for International Health, University of Sydney, Sydney, NSW 2050, Australia. fturnbull@george.org.au
Diabetologia
|August 6, 2009
Summary
Intensive glucose control in type 2 diabetes modestly reduced major cardiovascular events but increased hypoglycemia. Tailoring glucose-lowering treatments to individual needs is recommended for managing diabetes complications.
Area of Science:
- Cardiology
- Endocrinology
- Diabetology
Background:
- Improved glucose control in type 2 diabetes (T2D) reduces microvascular risks.
- Uncertainty remains regarding the impact of glucose control on macrovascular disease in T2D.
Purpose of the Study:
- To provide precise estimates on the effect of intensive versus less-intensive glucose control on major cardiovascular events in T2D patients.
- To analyze the impact of glucose-lowering strategies on macrovascular outcomes.
Main Methods:
- A prospectively planned group-level meta-analysis.
- Pre-specified inclusion criteria, outcomes, analyses, and subgroup definitions.
- Involved 27,049 participants and 2,370 major vascular events.
Main Results:
- Intensive glucose control reduced major cardiovascular events by 9% (HR 0.91) and myocardial infarction by 15% (HR 0.85).
- No significant reduction in all-cause mortality (HR 1.04) or cardiovascular death (HR 1.10) was observed.
- Intensive treatment led to significantly more major hypoglycaemic events (HR 2.48).
- Exploratory analyses suggested a potential differential effect on macrovascular events based on pre-existing macrovascular disease (interaction p = 0.04).
Conclusions:
- Targeting intensive glucose lowering in T2D modestly reduced macrovascular events but increased major hypoglycemia over 4.4 years.
- Results suggest that glucose-lowering regimens should be individualized for T2D management.
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