Final answer:
The PCT should document the location, extent, and characteristics of the observed edema in the patient's legs in addition to informing the nurse.
Step-by-step explanation:
The Patient Care Technician (PCT) should document the location, extent, and characteristics of the edema observed in the patient's legs, in addition to informing the nurse. This documentation is important to provide a comprehensive record of the patient's condition and to assist healthcare professionals in developing an appropriate treatment plan. By describing the location, extent, and characteristics of the edema, the PCT can help the healthcare team monitor the effectiveness of interventions and track any changes over time.