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Abstract
Background: The clinical significance of moment measurements (admission and fasting glycaemia), persistent (hyperglycaemic index, HGI; time average glucose, TAG; mean glucose; maximum glucose) or chronic hyperglycaemia (HbA1c, estimated average glucose, eAG) is still elusive in clinical practice.
Aim: To identify the clinical significance of hyperglycaemia in ACS.
Methods: The study included 226 consecutive patients with ACS. Indicators for hyperglycaemia were defined, calculated and a correlation analysis with standard parameters—EF, maximum CPK, maximum CPK-MB and troponin was performed. Patients were followed up for 12 months.
Results: Indicators for persistent and chronic hyperglycaemia correlated neither to ejection fraction, nor to the enzymes for myocardial necrosis (P > 0.05). In contrast, acute hyperglycaemia correlated negatively with ventricular systolic dysfunction (P = 0.001/0.007) and positively with maximum CPK, MB and troponin (P = 0.0001/0.008). TAG was an independent predictor for 6-month re-hospitalization (P = 0.027) because of cardiac complications.
Conclusion: Glycaemia at admission and fasting glucose could be used as metabolic surrogate markers for ventricular systolic dysfunction and TAG as an independent surrogate marker for six-month re-hospitalization. None of the indicators for hyperglycaemia could be used as independent prognostic factors for survival. Hyperglycaemia rather reflects an underlying impairment in glucose metabolism.
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Declaration of interest: The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the paper.