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Electrocardiographic Q-waves as a predictor of mortality in patients with cerebral infarction
M Tanaka1, Y Nakayama, Y Maeda
1Department of Cardiology, Ishikiriseiki Hospital, Osaka, Japan. masa-t@msic.med.osaka-cu.ac.jp
Objective:
To determine whether abnormal EKG findings could be predictive factors for death after a stroke event.
Methods:
Patients with acute cerebral infarction who were 35 to 98 years old during April 1996 through November 2000 were analyzed (n = 216). A standard 12-lead EKG was recorded for each patient after acute cerebral infarction. The authors prospectively investigated the association between abnormal EKG findings and the risk for death after stroke over a 1-year period.
Results:
Using multivariate Cox proportional hazards models, the authors found age (hazard ratio of mortality per year 1.10, 95% CI 1.06 to 1.15, p < 0.001), sex (female; hazard ratio of mortality 3.42, 95% CI 1.43 to 8.19, p = 0.006), and the presence of Q-waves in more than two leads (hazard ratio of mortality 2.75, 95% CI 1.23 to 6.14, p = 0.013) were independently associated with death after stroke.
Conclusion:
The presence of Q-waves in more than two leads could be a predictive factor for death after acute cerebral infarction.
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