Clinical Utility of the Numerical Verbal Scale (NVS) and the Pain and Functional Activity Scale (PFAS) in the Management of Rescue Analgesia in Acute Postoperative Pain. Randomized Study.

Exclusion Criteria

• •Cognitive-mental deficit assessed using the Pfeiffer questionnaire. Patients with more than two errors if they have a university degree and more than three errors if they do not have a university degree are excluded from the study.
• •Allergy to any of the analgesic drugs listed on the data collection sheet (Paracetamol / NSAIDs / Metamizole / Dexamethasone / Local anesthetics / Morphine / Fentanyl).
• •Patients who, in the preoperative survey, present any degree of functional limitation according to the FAS scale (Grade B and C).
• •Withdrawal Criteria:
• •If the patient withdraws consent.
• •If the patient experiences delirium, as measured by a positive CAM (Confusion Assessment Method) scale, following surgery.