Study flow diagram. From January 2005 to April 2009, 329 ESRD patients started dialysis and 215 included in our study. *High-risk group was defined as patients >50 years of age, diabetes >10 years, a prior history of CAD or an abnormal electrocardiogram (excluding LV hypertrophy and electrolyte imbalance), decreased LV ejection fraction (LVEF) <40% or regional wall motion abnormality (RWMA) on echocardiography, and having 2 or more traditional CAD risk factors. ESRD, end-stage renal disease; F/U, follow-up; ECG, electrocardiography; CAG, coronary angiography; CAD, coronary artery disease; CABG, coronary artery bypass graft; PCI, percutaneous coronary intervention