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.

Patient age in years

Patient gender (Female, Male)

Patient body mass index

Cognitive-mental deficit assessed according to the Pfeiffer questionnaire:

1. What is today's date (day, month, year)? 2. What day of the week is it today? 3. Where are we now (place or building)? 4. What is your telephone number? (or your address if you don't have a telephone) 5. How old are you? 6. What is your birth year? 7. Who is the current Prime Minister? 8. Who was the previous Prime Minister? 9. What is your mother's second surname? 10. Subtract 3 each time from the number 20.

Patients with more than 2 errors if they have a university degree and more than 3 errors if they do not have a university degree will be excluded from the study.

After completing the questionnaire, the variable is recorded as yes/no.

Anesthetic risk scale (ASA), indicate one of the following options: 0-No risk, 1-Low risk, 2-Moderate risk, 3-High risk

Risk factors associated with persistent postoperative pain, indicate the following option(s):

• Treatment with antidepressants
• Treatment with anxiolytics/benzodiazepines
• Catastrophizing (Yes: moderate-to-high risk/ No: low risk) [The Pain Catastrophizing Scale - abbreviated PCS-4 - will be applied). (4-8 low risk; 9-12 moderate risk; 13-16 high risk)
• Chronic preoperative pain [NV >4 for more than 3 months, in any location]
• Use of strong opioids and/or tramadol at doses greater than 60 mg/day for more than 3 months
• History of use of opiates, cannabis, lysergic acid diethylamide (LSD), 3,4-methylenedioxymethamphetamine (MDMA)
• History of alcohol consumption >40 grams/day in men and >20 grams/day in women

Surgical procedure, indicate one of the following options: Upper lobectomy, Middle lobectomy, Lower lobectomy.

Surgery location, indicate one of the following options: Right, Left.

Anesthetic technique, indicate one of the following options: Inhalational general anesthesia, Intravenous general anesthesia

Intraoperative analgesia guidelines, choose the type of drug: Fentanyl, paracetamol, NSAIDs

Postoperative Neurological Status of the Patient by Confusión Assessment Method:

1. Acute Onset and Fluctuating Course
2. Inattention
3. Disorganized Thinking
4. Altered Level of Consciousness
5. Alert (normal) 2. Vigilant (hyperalert, very sensitive to environmental stimuli) 3. Lethargic (inhibited, drowsy) 4. Stuporous (difficult to awaken)

For a diagnosis of delirium, the first two criteria and at least one of the last two are necessary.

After completing the questionnaire, the variable is recorded as yes/no.

Analgesia guidelines in the post-surgical intensive care unit, indicate

• Rescue dose of morphine (PCA)
• Total dose in mg

Side effects of analgesia, indicate from the following options:

• Nausea / Vomiting
• Postoperative ileus [Oral intolerance and/or need for nasogastric tube]
• Mental confusion / Hallucinations
• Sedation [Ramsey Scale] see appendix.
• Pruritus
• Respiratory depression [Respiratory rate < 12 breaths/min, requiring therapeutic maneuvers]
• Other (specify)

Nighttime rest at 24 and 48 hours: Sleep scale. To answer the question "How do I sleep?" the patient responds on a scale from 0 (I don't sleep at all) to 10 (I sleep perfectly).

Desire for more pain relief than received (Yes, No, Don't know)

Satisfaction with pain management therapy using 4 categories:

• Very dissatisfied
• Dissatisfied
• Satisfied
• Very satisfied