Anesthesiology is a clinical science and art which makes patient senseless and pain-free while maintaining safety and physiology of the patient during operation in the operation theater or during the procedures in the catheter laboratory. This field also takes care of critically ill patients in the ICU setting while needs different organ support. In outdoor setting preoperative check-up of the patients and pain management services are included. Similarly to provide knowledge and technique of basic life support during sudden death, checking or drowning is another field of job in the community/schools.