sentences:  The hospital was founded on October 27, 1920, as a tuberculosis (TB) sanatorium to relieve overcrowding at County General Hospital, and when it was no longer needed for TB treatment, the facilities became an acute care hospital in 1970.In 1962, Olive View Hospital performed the first open heart surgery successfully in the San Fernando Valley, and one of the first in Southern California.The hospital was known as Olive View Hospital before it became affiliated with the University of California, Los Angeles's School of Medicine in 1970.