Anesthesia – a condition in which the background to the loss or preservation of consciousness, partially or completely lost feeling and so there is no pain. The word “anesthesia” means the numbness. It can be caused by illness, damage or administration of anesthetics (anesthetic). In common usage, anesthetic called one or the other way to rid the patient of pain in surgical operations. Anesthesiology – the area of clinical medicine is primarily concerned with problems of anesthesia during surgery, as well as the formulation and implementation of resuscitation and the use of anesthetics for therapeutic purposes.