Final answer:
If a patient feels faint during a GI series, elevate their legs or place the table slightly Trendelenburg. If the condition worsens, leave quickly and call for help.
Step-by-step explanation:
If a patient feels faint during a GI series, the appropriate action would be to elevate the patient's legs or place the table slightly Trendelenburg. This position helps to increase blood flow to the brain and alleviate the feeling of faintness. Laying the patient down on the x-ray table may not be as effective in resolving the issue.If the patient's condition worsens or they lose consciousness, it would be necessary to leave quickly and call for help.