Patients who meet the following criteria will be included in the study:
• Individuals with an indication for upper floor surgery (pancreatectomy, nephrectomy, aortic aneurysm, thoracotomy, and hepatectomy, or L3/L4 for lower abdominal floor surgery (cystectomy, rectosigmoidectomy, prostatectomy).
• Individuals who sign the Informed Consent Form;
• Participation in all stages of the research.