[Differentiation of stress-induced hyperglycemia from diabetes mellitus in cerebrovascular strokes by hemoglobin A1 determination].

The author observed high sugar level in 22 patients who had cerebrovascular diseases (cerebral hemorrhage and cerebral infarction). They tried to diagnose the cause of the increased sugar level with HbA1 test after the registration of the patients to the hospital within 24-48 hours. They found normal, less than 8% HbA1 concentration in 12 patients, increased, more than 8% values in 10 cases. They made oral glucose tolerance test in 19 survived patients after the acute symptoms had finished. The oral glucose tolerance test with increased HbA1 concentration showed in 5 patients diabetes, in 3 cases impaired glucose tolerance. The author observed from all hyperglycemic patients with low HbA1 level only 2 cases impaired glucose tolerance. Hyperglycemia with increased HbA1 concentration indicates previous carbohydrate intolerance.