PT - JOURNAL ARTICLE AU - Kennon, S AU - Price, C P AU - Mills, P G AU - MacCallum, P K AU - Cooper, J AU - Hooper, J AU - Clarke, H AU - Timmis, A D TI - Cumulative risk assessment in unstable angina: clinical, electrocardiographic, autonomic, and biochemical markers AID - 10.1136/heart.89.1.36 DP - 2003 Jan 01 TA - Heart PG - 36--41 VI - 89 IP - 1 4099 - http://heart.bmj.com/content/89/1/36.short 4100 - http://heart.bmj.com/content/89/1/36.full SO - Heart2003 Jan 01; 89 AB - Objectives: To determine the incremental value of clinical data, troponin T, ST segment monitoring, and heart rate variability for predicting outcome in patients with non-ST elevation acute coronary syndromes. Methods: Prospective cohort study of 304 consecutive patients. Baseline clinical and electrocardiographic data were recorded, serial blood samples were obtained for troponin T assay, and 48 hour Holter monitoring was performed for ST segment and heart rate variability analysis. End points were cardiac death and non-fatal myocardial infarction during 12 months’ follow up. Results: After 12 months, 7 patients had died and 21 had had non-fatal myocardial infarction. The risk of an event was increased by troponin T > 0.1 μg/l, T wave inversion on the presenting ECG, Holter ST shift, and a decrease in the standard deviation of 5 minute mean RR intervals. Positive predictive values of individual multivariate risk were low; however, analysis of all multivariate risk markers permitted calculation of a cumulative risk score, which increased the positive predictive value to 46.9% while retaining a negative predictive value of 96.9%. Conclusion: A cumulative approach to risk stratification in non-ST elevation coronary syndromes successfully identifies a group in whom the risk of cardiac death or non-fatal myocardial infarction approaches 50%.