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Published on: June 11, 2012
Glycemia and cardiovascular risk: challenging evidence based medicine
K Kitsios1, A Tsapas, P Karagianni
12 Department of Internal Medicine, Aristotle University of Thessaloniki, Hippokratio General Hospital, Thessaloniki, Greece.
Insights
Strict glycemic control can reduce long-term cardiovascular disease in diabetes. However, for type 2 diabetics with existing complications, individualized treatment is crucial to avoid harm.
Area of Science:
- Endocrinology
- Cardiology
- Metabolic Diseases
Background:
- Optimal glycemic control is proven to reduce microvascular complications in type 1 and type 2 diabetes mellitus.
- The impact of glycemic control on major cardiovascular events like myocardial infarction and ischemic stroke in diabetics remains controversial.
- Cardiovascular disease is a leading cause of mortality in patients with diabetes.
Purpose of the Study:
- To review the causal relationship between glycemia and cardiovascular outcomes in type 1 and type 2 diabetes.
- To analyze recent data from large interventional studies regarding glycemic control and cardiovascular events.
- To discuss individualized treatment strategies for diabetes management concerning cardiovascular risk.
Main Methods:
- Systematic review of recent large interventional studies.
- Analysis of data on glycemic control and cardiovascular outcomes in type 1 and type 2 diabetes.
- Discussion of potential risks and benefits of strict glycemic control.
Main Results:
- Strict glycemic control initiated early may reduce long-term cardiovascular disease incidence in both type 1 and type 2 diabetes.
- Intensive glycemic control can be detrimental for type 2 diabetics with established cardiovascular complications and long-standing suboptimal control.
- Individualized treatment targets are necessary, considering factors like hypoglycemia and autonomic neuropathy.
Conclusions:
- Early strict glycemic control shows promise for long-term cardiovascular risk reduction in diabetes.
- A nuanced approach is required for type 2 diabetics with advanced disease and complications.
- Personalized diabetes management, accounting for comorbidities, is essential for optimizing cardiovascular outcomes.
Abstract:
Optimal glycemic control is well known to reduce effectively the risk of micro vascular complications both in type 1 and type 2 diabetes mellitus. However the role of glycemic control in decreasing the risk of myocardial infarction and ischemic stroke, the leading causes of death in patients with diabetes, has been so far controversial. In this review, based on data recently reported from large interventional studies, we discuss the possible causal relationship between glycemia and cardiovascular outcomes in type 1 and type 2 diabetes. Strict glycemic control right from the diagnosis of the disease may be effective in reducing long term incidence of cardiovascular (CV) disease in both T1 and T2 diabetics. Nevertheless such a strategy could be potentially harmful for T2 diabetics with long duration of sub optimal glycemic control and already established CV complications. Treatment targets in these patients should be individualized taking into account other aspects of glycemic control and diabetes complications such as hypoglycemia and autonomic neuropathy.
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