Patient Preparation for an Esophagram Includes NPO _____ Before the Procedure

Patient preparation for an esophagram includes NPO _____ before the procedure.

A) 4 to 6 hours
B) 30 minutes to 1 hour
C) 4 to 6 hours and no gum chewing or smoking
D) None of the above; patient preparation is not needed as long as an upper GI series is not scheduled to follow.