Objective To evaluate the diagnostic value of adenosine stress ~(99m)Tc-MIBI myocardial perfusion single photon emission computed tomography (ECT)in elderly patients with coronary artery disease (CAD). Methods Fifty-three patients aged ≥60 years without the history of myocardial infarction were included in the research. The average age of the patients was(65.5±6.5) years (60-78 years old). All patients underwent adenosine stress ~(99m)Tc- MIBI myocardial perfusion single photon ECT and coronary angiography (CAG) within 2 months, and the results were compared. Results Compared with CAG, the sensitivity, specificity, positive predictive value, negative predictive value and accurate index of ECT were 73.7%, 90.9%, 94.3%, 80.0% and 62.3%, respectively. The specificity for left anterior descending artery, left circumflex artery and right coronary artery of ECT were 90.9%, 85.7% and 100%, respectively, and the positive predictive values were 73.5%, 77.3% and 72.0%, respectively. Conclusions Adenosine is a strong vasodilator and it has multiple effects on cardiovascular system. Combination of angiocardiography and myocardial perfusion imaging can be used in diagnosis of coronary artery disease. ECT is a noninvasive, convenient and low cost method and plays an important role in diagnosing, directing treatment and judging prognosis of CAD in the elderly patients.

A cross sectional study of 769 patients was performed to evaluate the association of blood uric acid with coronary heart disease (CHD) in different metabolic disorders. It showed that uric acid was not independently associated with CHD. However, when the other abnormal metabolic factors were absent, uric acid might be related to CHD.