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  • Title: Predictors and prognostic impact of silent coronary artery disease in asymptomatic high-risk patients with diabetes mellitus.
    Author: Zellweger MJ, Haaf P, Maraun M, Osterhues HH, Keller U, Müller-Brand J, Jeger R, Pfister O, Brinkert M, Burkard T, Pfisterer M, BARDOT Investigators.
    Journal: Int J Cardiol; 2017 Oct 01; 244():37-42. PubMed ID: 28784453.
    Abstract:
    AIMS: Evaluation of predictors of silent coronary artery disease (SCAD) in high-risk asymptomatic diabetic patients and to evaluate their two-year outcome. METHODS AND RESULTS: Four hundred diabetic patients without prior CAD but at high CAD risk underwent myocardial perfusion scintigraphy (MPS) in this prospective multicentre outcome trial. MPS were abnormal in 22% of patients. Male sex (OR 2.223, 1.152-4.290; p=0.017), diabetes duration (OR 1.049,1.015-1.085; p=0·005), peripheral artery disease (OR 2.134, 1·150-3.961; p=0.016), smoking (OR 2.064, 1.109-3.839; p=0·022), systolic blood pressure (OR 1.014, 1.00-1.03, p=0·056), brain natriuretic peptide (OR 1.002, 1.001-1.004, p=0·005) independently predicted an abnormal MPS: if <2 and >3 predictors were present, 3.2% and 47% patients had an abnormal MPS, respectively (p<0·001). Two-year major adverse cardiac event rates increased from 2·9% to 14·6%, cardiac death rates from 0·6% to 4·1% in patients with summed stress scores ≤10 and >10%, respectively (each p<0.045). CONCLUSIONS: Male sex, diabetes duration, peripheral artery disease, smoking, elevated systolic blood pressure and increased brain-natriuretic peptides independently predicted SCAD. In presence of >3 predictors, almost 50% of patients had an abnormal MPS. They may benefit from screening by MPS since the extent of the MPS abnormality discriminated clearly between a favourable compared to a bad 2-year outcome. However, even highest risk patients without objective evidence of CAD had a benign prognosis without need for specific evaluation or therapy. TRIAL REGISTRATION NUMBER: ISRCTN87953632.
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