Leave sensor probe in place until oximeter reaches constant value and pulse display reaches full strength during each ca打开电源，接通血氧仪。观察脉搏波形/强度和嘟嘟声。对比血氧仪脉率与病人桡动脉搏动。
The pulse oximeter is a noninvasive monitor attached to the patient's finger or earlobe to measure oxygen saturation con脉氧仪显示病人氧饱和度，这是一种非侵入式监测仪，套在病人指头或耳垂上连续监测氧饱和度。