Objective To evaluate the clinical value of 12 lead Holter monitoring for coronary heart disease(CHD) patients. Method Seventy suspected CHD patients had accepted coronary angiography(CAG) and 12 lead Holter monitoring examination.Results The sensitivity for detecting CHD in 12 lead Holter monitoring was 80%,the specificity 84%,and the accuracy 81.42%.The positive rate was increasing with the increase of the coronary vessel.Conclusion 12 lead Holter monitoring is the best examination without damage,but othe...