People with 22q11.2 deletion syndrome often experience recurrent infections caused by problems with the immune system, and some develop autoimmune disorders such as rheumatoid arthritis and Graves disease in which the immune system attacks the body's own tissues and organs.
Rene Favaloro; Performed First Bypass Surgery. Rene Favaloro, 77, Argentine surgeon who pioneered coronary bypass surgery. In 1967, Favaloro performed the first bypass operation on a 51-year-old woman at the Cleveland Clinic in Ohio, using a saphenous vein taken from the patient's leg to detour blood around blockages in her heart.
There are several types of heart bypass grafts. The surgeon decides which graft(s) to use, based on the location of the blockage, the amount of blockage, and the size of the patient's coronary arteries. 1  Internal mammary arteries: These are the most common bypass grafts used, as they have been shown to have the best long-term results.