Which statement by a client scheduled for a carotid ultrasound would require follow-up?

The statement about fasting for at least 8 hours before the carotid ultrasound would require follow-up. Typically, carotid ultrasounds do not require the client to fast beforehand. This is because this type of imaging primarily assesses blood flow and structure, and the presence of food in the stomach does not affect the results of the ultrasound.

In contrast, the other statements reflect appropriate preparations for the procedure. Eating a light meal is generally acceptable as it does not impede the ultrasound imaging. Removing jewelry or metal objects is necessary to prevent interference with the ultrasound waves and to ensure a clear view of the carotid arteries. Additionally, understanding that the ultrasound uses sound waves indicates that the client has a good grasp of the procedure and its mechanisms, which is a positive sign of informed consent.

Thus, the need for fasting before the carotid ultrasound is the key area that would require further clarification and follow-up with the client.