These will not only help evaluate the overall risk of surgery but also help determine the kind of anesthetic and other drugs you may need.
Correction of Associated Diseases Once problems have been identified, as many abnormalities as possible should be corrected. High blood pressure (hypertension), for example, should be treated before the operation. Infections can be treated with antibiotics, blood can be replenished if the blood counts are not high enough, and there may be ways of improving pulmonary function.
One of the most common problems people have is malnutrition. It is very important to correct this before the operation, since good nutrition gives your body the strength to get through the trauma of the operation and to heal properly. If necessary, additional feedings through a small tube in the stomach or an intravenous line can provide your body with an extra 2,500 to 3,000 calories a day.