Anesthesiologists always have to remain alert to what is going on when in the operating room. The liability is huge in anesthesiology, because of the problematic effects, such as paralyzation, if too much or too little anesthesia is used. Every anesthetic must be tailored to the individual, and to the operation or procedure that the person is having. Individuals have different responses to anesthesia. Some of these differences are genetic, or inborn, and some differences are due to changes in health or illness. The amount of anesthesia needed can differ according to such things as; age, weight,