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  • Title: Independent and incremental value of stress echocardiography over clinical and stress electrocardiographic parameters for the prediction of hard cardiac events in new-onset suspected angina with no history of coronary artery disease.
    Author: Chelliah R, Anantharam B, Burden L, Alhajiri A, Senior R.
    Journal: Eur J Echocardiogr; 2010 Dec; 11(10):875-82. PubMed ID: 20667847.
    Abstract:
    AIMS: Recent data have shown that exercise electrocardiogram (ECG) has no incremental prognostic value over clinical and rest ECG parameters in chest pain patients without a history of coronary artery disease (CAD). The incremental prognostic value of stress echocardiography (SE) in this population is unknown. METHODS AND RESULTS: Accordingly, 547 consecutive patients (68 ± 4.9 years) with chest pain but no previous history of CAD, referred for SE (exercise and dobutamine), were identified. Patients were followed up for death and acute myocardial infarction (AMI). At a median follow-up period of 28 months, there were a total of 35 hard cardiac events (5 deaths and 30 non-fatal AMI). Among the prognostic clinical, resting/stress ECG, and SE data, univariate predictors were the Framingham risk score (P = 0.025), diabetes (P = 0.06), hypercholesterolaemia (P = 0.06), stress ECG ischaemia (P = 0.044), stress heart rate (P = 0.019), and SE-determined ischaemic burden (stress-rest wall thickening score index; P < 0.001). In a multivariate model, ischaemic burden was the only independent predictor of events (P < 0.001). SE also showed incremental prognostic value over and above clinical (Framingham's risk score) and stress ECG changes in a global χ(2) model. This was true also for patients undergoing only exercise SE (n = 347). CONCLUSION: SE provides both independent and incremental prognostic value for the prediction of hard cardiac events in chest pain patients without a previous history of CAD-over and above clinical, ECG, and stress ECG data.
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