Step-by-step explanation:
The preferred way to assess heart rate during chest compressions of an infant is to use a combination of clinical assessment and monitoring devices. The rescuer should check the infant's pulse or heart rate every 2 minutes while performing CPR. In addition, the use of a pulse oximeter can provide continuous monitoring of the infant's heart rate and oxygen saturation levels. However, the use of a pulse oximeter should not replace clinical assessment of the infant's circulation. Waveform capnography can also be used to monitor the effectiveness of chest compressions in increasing blood flow and ventilation during CPR.