Final answer:
The technician should first verify proper lead placement when the EKG tracing does not match the previous one.
Step-by-step explanation:
The technician should first verify proper lead placement when the EKG tracing does not match the previous one. Proper lead placement is crucial for obtaining accurate results in an electrocardiogram (ECG) or EKG. Incorrect lead placement can lead to distorted or inaccurate readings. After verifying proper lead placement, the technician can then make further assessments or report the finding to the provider if necessary.