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.
How The Stethoscope Was Invented. Alex Santoso â¢ Sunday, February 7, 2010 at 4:51 PM â¢ 0. The stethoscope was invented by a doctor too embarrassed to place his ear on a woman's ample bosom. Before the invention of the stethoscope, a physician would listen to a patient's heart by placing his ear over the chest. In 1816, RenÃ© Laennec, a physician and devout Catholic, was called to examine a young woman suspected to have a diseased heart.