Elevated HbA1c protective in heart failure patients

Researchers followed patients for two years. Among heart failure patients with diabetes, there was a 15% decrease in mortality for every unit increase in HbA1c. The ideal level appeared to be 8.3–8.9%, with two-year event-free survival highest among those with the highest levels.

Patients with more than 8.6% of the marker had a 65% survival rate, compared with 42% when levels fell below 6%.

American Journal of Cardiology 2012; online 29 Mar