During which procedure would the surgical technologist likely confirm the size of implants?

The procedure during which a surgical technologist is likely to confirm the size of implants is a total knee replacement. In this surgery, artificial components, including the femoral component, tibial component, and patellar component, are inserted to replace the damaged parts of the knee joint due to conditions such as arthritis or injury.

Before the actual implantation, it is crucial to ensure that the correct sizes of the implants are selected based on the patient's anatomy. This is often done using templates or sizing guides prior to the procedure and by evaluating the anatomy during the surgery. The surgical technologist plays a key role in this process by assisting the surgeon in confirming the sizes through these methods to ensure optimal function and fit of the implants.

In contrast, the other procedures listed generally do not involve the placement of implants or prosthetics. Laparoscopic cholecystectomy focuses on removing the gallbladder; vascular surgery may involve grafts or interventions but typically do not require implant sizing as it pertains to joint prosthetics; and appendectomy involves the removal of the appendix without the need for implant confirmation. Hence, confirming implant sizes is specifically relevant and critical in the context of a total knee replacement.