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。
Murmurs are considered continuous when they are audible throughout all phases of the cardiac cycle.整个心动周期都可以听到的杂音被称为连续性杂音。