Anesthesia is a method used to prevent pain and discomfort during surgery by administering anesthetics. Anesthesia is classified into 3 classes. 1. General anesthesia 2.regional anesthesia 3. local anesthesia. Critical care is a multidisciplinary department treating the patients who are suffering from acute, chronic disorders. Related Journals of Anesthesia & Critical Care Journal of Pain & Relief, Analgesia & Resuscitation : Current Research, Journal of Intensive and Critical Care, Journal of Pain Management & Medicine, Journal of Patient Care, Anaesthesia and Intensive Care Journal, Anesthesiology and Pain Medicine Journals, Pediatric Anesthesia and Critical Care Journal, Journal of Anesthesiology and Critical Care Medicine, Journal of Anesthesia & Critical Care: Open Access, Anaesthesia & Intensive Care Medicine, Anaesthesia and Intensive Care Medicine, Critical Care Anesthesiology.