NBC 10 Philadelphia | With just weeks left, Sarah fights the system for life-saving pair of lungs CNN International This procedure is known as an ECMO -- extracorporeal membrane oxygenation -- and is used occasionally as a bridge to lung transplantation. For now, Sarah, who has been outdoors only twice in the past 100 days, is looking forward to a possible transplant. Area Doctor Working On Ways To Get More Lungs For Transplant |