My father was on it for 2 days when hospitalized. It’s a miracle he made it. O2 sats around 80 and had coughed up a blood clot at home. Nurse said if he had come a few hours later he’d be in ICU…3 months later he was on the roof with a leaf blower cleaning out the gutters 🤷🏼‍♀️ He has since walked two of us girls down the aisle and became a Grandpa. All glory to God. Glad you are still here to tell the tale, too!