Abstract:Objective To compare and analyze the value of routine electrocardiogram(ECG), ambulatory electrocardiography(AECG) and treadmill exercise test(TET) in the diagnosis of senile coronary heart disease(CHD). Methods A total of 120 elderly patients suspected with CHD who had been examined in our outpatient department were selected as research objects. All patients underwent routine ECG, AECG and TET examinations; finally coronary angiograph(CAG) diagnosis was taken as the standard to evaluate and analyze the diagnostic value of the three examination methods for senile CHD. ResultsAmong the 120 suspected CHD patients, 86 cases are confirmed by CAG, including 30 cases with mild coronary artery stenosis, 45 cases with moderate stenosis and 11 cases with severe stenosis, or 33 cases with single vessel lesions and 53 cases with multivessel lesions. In the 86 patients diagnosed with CHD, the detection rates of AECG and TET for CHD (75.6% and 79.1%, respectively) are significantly higher than that of routine ECG(60.5%,P<0.05); the detection rates of AECG and TET for mild stenosis and severe stenosis, and single vessel and multi-vessel lesions are significantly higher than those of routine ECG(P<0.05). The detection rate of any of the three detection methods for multi-vessel lesions is significantly higher than that for single vessel lesions(P<0.05). The sensitivity and accuracy of AECG and TET in the diagnosis of CHD are significantly higher than those of routine ECG(P<0.05). ConclusionRoutine ECG, AECG and TET are valuable in diagnosing senile CHD. A combination of the three methods may help to improve the diagnostic rate and reduce the misdiagnosis rate of CHD.