Avita Health System offering new heart treatment Staff Report Avita Health System recently added SuperSaturated Oxygen (SSO2) Therapy at Galion and Ontario hospitals. Joseph Mayo, M.D., Ph.D., is shown with members of Avita’s heart attack alert team. Mayo and his staff successfully treated the first patient on March 25 at Galion Hospital Avita Health System GALION — Avita Health System is the first healthcare organization in North Central Ohio and the first critical access hospital in the United States to improve the treatment of severe heart attack patients with SuperSaturated Oxygen (...