Today's modern anesthetic monitors have made surgery much safer than in the past. At our hospital, we do a thorough physical exam on your pet before administering anesthetics, to ensure that a fever or other illness won't be a problem.
Pre-anesthetic blood testing is important in reducing the risk of anesthesia. Blood testing before surgery is recommended to ensure that the liver and kidneys can handle the anesthetic. Even apparently healthy animals can have serious organ system problems that cannot be detected without blood testing. If there is a problem, it is much better to find it before it causes anesthetic or surgical complications. This is a critical part to keep patients well hydrated throughout the procedure and provides us with an emergency access port if the need should arise.
If serious problems are detected, surgery can be postponed until the problem is corrected. For geriatric or ill pets, additional blood tests, electrocardiograms, or x-rays may be required before surgery as well. It is important that surgery be done on an empty stomach to reduce the risk of vomiting during and after anesthesia. You will need to withhold food for at least 8 to 12 hours before surgery.