NYPD cop who sifted through ten tons of 9/11 debris says he saw a ghost 'trying to help' while searching for clues to identify victims from attacks at landfill, book reveals. 1  Sgt. Frank Marra, 48, said he saw ghost of African American woman, who was dressed in white as a Red Cross worker from Second World War.
oxygen debt. a state that arises in very active muscles when insufficient oxygen is supplied by the lungs, causing the muscle tissue to respire anaerobically with the production of LACTIC ACID. When muscular activities slow down, the rate and depth of breathing remains at a high level until the lactic acid has been oxidized.
As a result, most Medicare oxygen equipment providers do not deal in portable oxygen concentrators. Whether you have a home oxygen concentrator, liquid oxygen, tanks, or a portable oxygen concentrator, all of this equipment is considered a rental item in the eyes of Medicare and the equipment company. An equipment company provides the oxygen equipment to you, then they bill Medicare a monthly fixed rental fee.