An algorithm for tight glycaemic control in diabetic infarct survivors

Area of Science:

• Cardiology
• Endocrinology
• Metabolic disorders

Background:

• Diabetic patients with acute myocardial infarction (MI) often experience poor glycemic control.
• Uncontrolled blood glucose levels post-MI are associated with adverse cardiac outcomes.

Purpose of the Study:

• To develop and evaluate an algorithm for predictable blood glucose control in diabetic patients following acute MI.
• To assess the algorithm's efficacy and safety, particularly in patients with varying degrees of cardiac failure.

Main Methods:

• A prospective study involving 29 diabetic patients admitted with acute MI.
• Hourly adjustment of intravenous soluble insulin infusion rates based on bedside capillary glucose monitoring.
• Comparison of glycemic control between obese and non-obese patients, and those with different severities of cardiac failure.

Main Results:

• The algorithm significantly reduced mean admission glucose levels from 18.3 +/- 5.9 mmol/l to 9.1 +/- 3.3 mmol/l at 4 hours and 8.8 +/- 2.5 mmol/l at 6 hours.
• Mean glucose concentrations over 48 hours were maintained at 8.2 +/- 1.3 mmol/l.
• The algorithm demonstrated tighter glycemic control compared to previous protocols, especially in patients with severe cardiac failure.
• Hypoglycemia (glucose < 3 mmol/l) occurred in 6 patients (11 episodes), with only two symptomatic episodes.

Conclusions:

• The developed algorithm offers predictable and effective blood glucose control for diabetic patients post-acute MI.
• The algorithm is particularly beneficial for patients with severe cardiac failure, improving glycemic management.
• The protocol is easy to administer by nursing staff and results in uncommon hypoglycemia.