Which of the following is one of the requirements for certification after a percutaneous coronary intervention (PCI)?

Certification after a percutaneous coronary intervention (PCI) involves several important health criteria to ensure the safety and readiness of the patient for resuming normal activities, including driving. One of the key requirements is the absence of ischemic electrocardiogram (ECG) changes. This is significant because ischemic changes on an ECG can indicate that the heart is still experiencing stress or insufficient blood flow, which may pose a risk for further cardiovascular complications.

The presence of ischemic changes could signify ongoing problems such as angina or possible heart attack, which would make it unsafe for the individual to operate a commercial vehicle. Therefore, confirming that there are no ischemic changes on the ECG assures that the individual is stable and no longer in immediate danger, thus meeting a critical safety standard for certification after PCI.