结论：本研究显示握力负荷超声心动图试验是可行的、安全的。
Conclusions The safety of grip exercise test of exercise stress echocardiography have been proved.
方法：假设负荷超声心动图中的握力试验对冠状动脉粥样硬化导致血管狭窄的患者有特异性。
Methods the hypothesis tested was that the patients with grip exercise test of exercise stress echocardiography could be specific.
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