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  • Title: Risk prediction in stable angina pectoris.
    Author: Kahan T, Forslund L, Held C, Björkander I, Billing E, Eriksson SV, Näsman P, Rehnqvist N, Hjemdahl P.
    Journal: Eur J Clin Invest; 2013 Feb; 43(2):141-51. PubMed ID: 23278283.
    Abstract:
    BACKGROUND: Although stable angina pectoris often carries a favourable prognosis, it remains important to identify patients with an increased risk of cardiovascular (CV) complications. Many new markers of disease activity and prognosis have been described. We evaluated whether common and easily accessible markers in everyday care provide sufficient prognostic information. MATERIALS AND METHODS: The Angina Pectoris Prognosis Study in Stockholm treated 809 patients (248 women) with stable angina pectoris with metoprolol or verapamil double blind during a median follow-up of 3·4 years, with a registry-based extended follow-up after 9·1 years. Clinical and mechanistic variables, including lipids and glucose, renal function, ambulatory and exercise-induced ischaemia, heart rate variability, cardiac and vascular ultrasonography, and psychosocial variables were included in an integrated analysis. Main outcome measures were nonfatal myocardial infarction (MI) and CV death combined. RESULTS: In all, 139 patients (18 women) suffered a main outcome. Independent predictive variables were (odds ratio [95% confidence intervals]), age (1·04 per year [1·00;1·08], P = 0·041), female sex (0·33 [0·16;0·69], P = 0·001), fasting blood glucose (1.29 per mM [1.14; 1.46], P < 0·001), serum creatinine (1·02 per μM [1·00;1·03], P < 0·001) and leucocyte counts (1·21 per 10(6)  cells/L [1·06;1·40], P = 0·008). Smoking habits, lipids and hypertension or a previous MI provided limited additional information. Impaired fasting glucose was as predictive as manifest diabetes and interacted adversely with serum creatinine. Sexual problems were predictive among men. CONCLUSIONS: Easily accessible clinical and demographic variables provide a good risk prediction in stable angina pectoris. Impaired glucose tolerance and an elevated serum creatinine are particularly important.
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