My mother passed away at the age of 85. When she felt ill, we took her to the ER. She was never assigned a hospital room and spent several miserable hours in the ER. The doctor diagnosed pneumonia, but said it might also be congestive heart failure. Her oxygen saturation levels hovered around 85 percent, and dropped quickly when the oxygen mask, which she resisted, was removed. She died very quickly when the mask was taken off. How long could she have lived if she had worn the oxygen mask? Sometimes I wish I had threatened to sue the doctor and the hospital for not having admitted her to a room.