Prevalence of hyperglycaemia and undiagnosed diabetes mellitus in patients with acute myocardial infarction

Acta Med Scand. 1986;220(4):329-32. doi: 10.1111/j.0954-6820.1986.tb02773.x.


The prevalence of hyperglycaemia and undiagnosed diabetes mellitus was assessed in 214 consecutive patients admitted to the coronary care units with acute myocardial infarction (AMI). On admission, 16 patients (7.5%) had known diabetes, and 19 patients, not previously known to be diabetic, had blood glucose concentrations of greater than or equal to 9 mmol/l. Fifteen patients survived for 2 months at which time a 75 g oral glucose tolerance test showed diabetes in 9 (60%) and impaired glucose tolerance in 4 (27%). Ten of these 13 patients (77%) with abnormal glucose tolerance had elevated glycosylated haemoglobin (HbA1c) on admission, indicating pre-existing glucose intolerance or diabetes. The prevalence of undiagnosed diabetes was 4.5% (9/198). However, we may have overlooked undiagnosed diabetes in a small number of patients on admission, since only a random blood glucose less than 8 mmol/l rules out diabetes, WHO criteria. Elevated blood glucose in patients with AMI is more likely to reflect a stationary pre-existing abnormal glucose tolerance than a temporary stress-induced phenomenon.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Diabetes Complications*
  • Diabetes Mellitus / diagnosis
  • Diabetes Mellitus / epidemiology
  • Female
  • Glucose Tolerance Test
  • Humans
  • Hyperglycemia / complications*
  • Hyperglycemia / diagnosis
  • Hyperglycemia / epidemiology
  • Male
  • Middle Aged
  • Myocardial Infarction / etiology*
  • Prospective Studies