Doctor of Medicine in Anaesthesia / MD Anesthesia is the branch of medicine that utilizes drugs and minimizes pain during the surgical procedure. An anaesthesiologist’s role is very important during the surgeries because of an allergic reaction. An anaesthesiologist’s role also includes keeping an eye on the patient’s breathing, blood pressure, and heart rate. To become an anaesthesiologist, one must first take up science with physics, chemistry and biology with English as the core subjects in 11th and 12th grades.