Anaesthesia is derived from the greek word meaning without sensation the term is applied to medications which can produce anaesthesia as well as to the whole process that patients undergo when having surgical and other medical procedures people often describe anaesthesia as being put to sleep this is not strictly true in general anaesthesia anaesthetists in fact place their patients into a state of carefully controlled unconsciousness so that they will be . Anaesthesia refers to the practice of administering medications either by injection or by inhalation breathing in that block the feeling of pain and other sensations or that produce a deep state of unconsciousness that eliminates all sensations which allows medical and surgical procedures to be undertaken without causing undue distress or discomfort. Anesthesia is freedom from pain each year millions of people in the united states undergo some form of medical treatment requiring anesthesia anesthesia in the hands of qualified professionals like certified registered nurse anesthetists crnas is a safe and effective means of alleviating pain during nearly every type of medical procedure. all about anaesthesia uploaded by debbie macomber the term anaesthesia is derived from the greek word meaning without sensation the term is applied to medications which can produce anaesthesia as well as to the whole process that patients undergo when having surgical and other medical procedures people often describe anaesthesia as being put to sleep anaesthesia is given to patients so