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Background Cardiovascular disease is the leading cause of mortality and morbidity in end-stage renal failure (ESRF) population, mostly from coronary artery disease (CAD). Majority of CAD in ESRF patients is asymptomatic and current cardiac stress imaging modalities are sub-optimal as risk predictors. Advances in cardiovascular magnetic resonance (CMR) with the novel blood oxygen level-dependent (BOLD) technique provides unprecedented capability to assess regional myocardial deoxygenation. We hypothesized that myocardial oxygenation would be reduced in ESRF patients and may form a novel strategy to assess myocardial ischemia. Methods Sixteen chronic renal failure (CRF) patients (7 on dialysis, 9 pre-dialysis) with no known history of CAD underwent CMR scanning at 3.0 T. Given known reductions in BOLD signals in hypertrophied myocardium, we also assessed a control group of HT patients with no history of CAD (n = 6) Myocardial function, rest and stress BOLD was performed. To measure oxygenation, using a T2-prepared BOLD sequence, myocardial Signal Intensity (SI) was measured at adenosine stress (140 μg/ kg/min) and at rest (corrected to RR interval). Comparison of myocardial SI analyses were performed using multivariate linear regression. Results

Myocardial oxygenation is reduced in end-stage renal failure: a novel blood oxygen level dependant (BOLD)-cardiac MRI study