RESUMO
OBJECTIVE: To investigate the HbA(1c) proportion and mortality rate across diabetic patients with severe hypoglycemia and the risk factors for death. METHODS: All the diabetic patients with severe hypoglycemia were divided into HbA(1c)<6.5% group and HbA(1c)≥6.5% group. The proportion of HbA(1c), mortality rate and the risk factors for death were analyzed. Common causes for severe hypoglycemia were also analyzed. RESULTS: The percentages of HbA(1c) in the HbA(1c)<6.5% and HbA(1c)≥6.5% groups were 51.2% and 48.8%, respectively. The mortality rates were not significantly different between the 2 groups (5.3% vs. 5.1%, χ(2)=0.01, p=0.17). Binary logistic regression analysis revealed that in both groups, creatinine, aspartate aminotransferase, and uric acid levels were the risk factors for death. In the HbA(1c)<6.5% and HbA(1c)≥6.5% groups, 65.0% and 64.2% showed common causes of severe hypoglycemia, respectively. CONCLUSIONS: With respect to severe hypoglycemia, equal attention should be paid to patients with an HbA(1c) level of ≥6.5% and those with an HbA(1c) level of <6.5%. The mortality rate is approximately 5% in severe hypoglycemia no matter how the HbA(1c) level is. Creatinine, aspartate aminotransferase, and uric acid are the main risk factors in both groups. Two-thirds of severe hypoglycemia cases could be prevented.
