F. John Lewis

Floyd John Lewis was an American surgeon who performed the first successful open heart operation, closing an atrial septal defect in a 5-year-old girl, on 2 September 1952. For the next 3 years, Lewis and colleagues operated on 60 patients with atrial septal defects using hypothermia and inflow occlusion. He was best friends with C. Walton Lillehei and they worked together at the University of Minnesota.


Floyd John Lewis was an American surgeon who performed the first successful open heart operation, closing an atrial septal defect in a 5-year-old girl, on 2 September 1952. For the next 3 years, Lewis and colleagues operated on 60 patients with atrial septal defects using hypothermia and inflow occlusion. He was best friends with C. Walton Lillehei and they worked together at the University of Minnesota.
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