Denton Cooley 1960s. He and his colleagues worked on developing new artificial heart valves from 1962 to 1967; during that period, mortality for heart valve transplants fell from 70% to 8%. In 1969, he became the first heart surgeon to implant an artificial heart designed by Domingo Liotta in a man, Haskell Karp, who lived for 65 hours. The next year, in 1970, "he performed the first implantation of an artificial heart in a human when no heart replacement was immediately available." Cooley's interests included basketball, which he played in high school and as a three-year letterman for the UT men's basketball
Comparison of MD and DO in the United States schools opening at a rate faster than MD schools, and an increase in applicants for medical schools as a whole. A 2012 survey of students applying to both U.S. MD and DO schools found that 9% of applicants were admitted only to an MD school, 46% were admitted only to a DO school, 26% were admitted to both, and 19% were not admitted to any medical schools. Geographic location was the top reason given by both DO and MD students for choosing the school in which they enrolled. Of first-year medical students matriculating in 2016, 25.9% (7,369 students) entered DO