Single Center Open Prospective Study for the Comparison of Procedural Sequence in Same Day Consecutive Bidirectional Endoscopy

The investigators study aim is to determine whether there is a any advantage in starting with upper or lower endoscopy. The main study objective will be the amount of analgesia needed for sustaining the examinee's comfort during the exams. Secondary endpoints will rate of detection of significant pathologies, total time of procedure, examinee's tolerance, time to recovery and examinee's satisfaction.

Inclusion Criteria:

• Age> 18
• Same day bidirectional endoscopy

Exclusion Criteria:

• Prior failed endoscopy.
• Any major complication during previous endoscopy.
• Difficulty in communication with the patients.
• Psychiatric disease or mental retardation.