Aim. To establish the utility of the informed consent (IC) in the accomplishment of diagnostic upper and low digestive endoscopy (UGIE, RSC and COL) and its effects in the perceptions with respect to the practiced examination. Half signed a format of IC and other half allowed verbally. Post-examination was applied to all a survey, evaluating the sensations of pain, annoyance and fear, expectations and satisfaction with respect to the examination. Results. 664 subjects, men 43.2% were surveyed, of 46.4 ±16.4 years old, the 49,4% with IC. Between these last the pain during the UGIE and RSC and the fear to the RSC was smaller, the number of satisfied patients was greater and their opinion respect to the CI and their advantages were better. Conclusions. The IC is a useful instrument in endoscopic procedures, it reduces the pain and fear, it favors the satisfaction and acceptance of a later examination.
