Anesthesiological risk assessment: anesthesiological examination, ASA classification, preoperative tests. The preparation of the patient candidate for surgery: preoperative fasting and premedication. The components of general anesthesia. The phases of general anesthesia: induction, deepening, maintenance, awakening and recovery of the patient. Inhalation and intravenous anesthesia: main drugs used. Brief notes on muscular paralysis. Tracheal intubation: preparation of the material. Perioperative monitoring (outline). Anesthesia instruments and appliances. Main complications of general anesthesia. Locoregional anesthesia: main techniques, drugs, contraindications and complications. Positioning of the patient while performing subarachnoid and peridural anesthesia. Postoperative pain: overview of pathophysiology, evaluation systems and methods of analgesic therapy.