Anaesthesiologists are primarily responsible for the safety and well being of patients before, during and after surgery. This may include placing them in the state of controlled unconsciousness called “General Anaesthesia” or the provision of “regional anaesthesia” where only a portion of the body is made numb, or administering sedation when indicated for relief of pain or anxiety. The role of anaesthesiologists extend beyond the operating room. The anesthesiologist is responsible for the pre operative assessment of the patient and evaluation process that carefully considers both the patients current state of health and the planned surgical procedure that allows anaesthesiologists to make judgement about the safest anaesthesia plan for said individual patient. The anaesthesiologist is also responsible for the well being of the patient postoperatively while the patient emerges from the effect of anaesthesia. They are involved in the management of acute post operative pain, cardiac and respiratory resuscitation in blood transfusion therapies and respiratory therapy.