冠状动脉硬化症的诊断,往往要做冠状动脉循环功能负荷试验,在国内最普遍和常用的方法是二级梯运动试验。做运动试验时,运动量用秒表和节拍器来指挥登梯的时间及控制速度。秒表市上有售,节拍器目前较难买到。节拍器一般借用于音乐方面使用的钟摆式节拍器,这种节拍器系机械结构,要放在水平位置才能正常工作,而且怕震动,容易损坏。为了配合二级梯运动试验的需要,附院心电图室和学院修配厂共同研制 Coronary arteriosclerosis diagnosis, often to do coronary artery functional load test, the most common and commonly used method in the country is a two ladder exercise test. Exercise test, the amount of exercise with stopwatch and metronome command ladder time and control speed. Stopwatch available in the market, metronome is currently difficult to buy. Metronome is generally borrowed from the pendulum metronome used in music, this metronome mechanical structure, to be placed on the level position to work properly, but also afraid of vibration, easy to damage. In order to meet the needs of the second-level ladder exercise test, the auxiliary electrocardiogram room and college repair factory jointly developed