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. 2001 Aug;86(2):133–138. doi: 10.1136/heart.86.2.133

Impact of diabetes mellitus on long term survival after acute myocardial infarction in patients with single vessel disease

M Ishihara 1, H Sato 1, T Kawagoe 1, Y Shimatani 1, S Kurisu 1, K Nishioka 1, Y Kouno 1, T Umemura 1, S Nakamura 1
PMCID: PMC1729851  PMID: 11454823

Abstract

OBJECTIVE—To assess the influence of diabetes on long term prognosis after reperfusion treatment and its interaction with multivessel disease.
DESIGN—A retrospective observational study.
SETTING—Hiroshima City Hospital.
PATIENTS—1660 consecutive patients with acute myocardial infarction who underwent coronary angiography within 24 hours after the onset of chest pain.
MAIN OUTCOME MEASURES—Influence of diabetes on 10 year survival after infarction was assessed using the generalised Wilcoxon test and Cox's proportional hazards regression. Follow up was completed in 1622 patients (98%).
RESULTS—Diabetic patients had more multivessel disease than non-diabetic patients (53% v 34%, p < 0.001). When only patients with single vessel disease were compared, diabetes was associated with a reduced 10 year survival after infarction (p = 0.002). On the other hand, in patients with multivessel disease there was no significant difference in survival between diabetic and non-diabetic patients (p = 0.70). Multivariate analysis also showed that diabetes was an independent risk factor related to 10 year mortality after infarction in patients with single vessel disease (odds ratio (OR) 1.81, 95% confidence interval (CI) 1.27 to 2.54; p = 0.001) and not in patients with multivessel disease (OR 1.17, 95% CI 0.85 to 1.60; p = 0.34).
CONCLUSIONS—Diabetes is an independent predictor of long term mortality after infarction in patients with single vessel disease. However, in the presence of multivessel disease, prognosis after infarction is impaired regardless of diabetes, and the influence of diabetes is less obvious.


Keywords: myocardial infarction; diabetes; coronary angiography

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Figure 1  .

Figure 1  

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10 year survival curves for all enrolled patients. Diabetic patients had significantly worse survival after myocardial infarction than non-diabetic patients.

Figure 2  .

Figure 2  

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10 year survival curves for all enrolled patients. Patients with multivessel disease had significantly worse survival after myocardial infarction than those with single vessel disease.

Figure 3  .

Figure 3  

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10 year survival curves for patients with single vessel disease. In these patients diabetes was associated with worse survival after myocardial infarction.

Figure 4  .

Figure 4  

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10 year survival curves for patients with multivessel disease. In patients with multivessel disease, survival after myocardial infarction was poor regardless of diabetes.

Selected References

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