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对运动试验心肌显像基本正常者进行随访以评价其预后。154例病人均行运动负荷心肌显像及运动 ECG 试验,其心肌显像基本正常。50例作了冠状动脉造影,4例证实为单支病变。显像后随访时间>1年(12～98个月)。均按Bayesian 分析法估算其心肌显像前后患冠心病的可能性。结果示心肌显像前估测患冠心病可能性为19%(M),显像后下降为13%,差异有显著性(U=6.0198,P<0.01)。在随访中仅观察到1例发生心脏事件,心脏事件发生率为0.2%/年。4例单支冠状动脉病变者无1例发生心脏事件。55例运动 ECG 阳性者也无1例发生心脏事件。心肌显像正常者,即使有冠状动脉病变,或冠心病可能性大,或运动 ECG 阳性,其预后均良好。这从一个侧面表明心肌显像的重要性和可靠性。
Follow-up of exercise test myocardial imaging was normal to evaluate the prognosis. 154 patients underwent exercise-load myocardial imaging and exercise ECG test, the myocardial imaging was normal. 50 patients underwent coronary angiography, 4 patients confirmed as a single lesion. Follow-up time after imaging> 1 year (12 to 98 months). Bayesian analysis were used to estimate the possibility of coronary heart disease before and after myocardial imaging. The results showed that the risk of coronary heart disease before myocardial imaging was 19% (M), decreased 13% after imaging, the difference was significant (U = 6.0198, P <0.01). Only one cardiac event was observed during follow-up, with a cardiac event rate of 0.2% / year. None of the 4 patients with single coronary artery disease had a cardiac event. None of the 55 patients with ECG positive had a cardiac event. Myocardial imaging is normal, even with coronary artery disease, or coronary artery disease is likely, or motor ECG positive, the prognosis were good. This shows the importance and reliability of myocardial imaging in one aspect.