Medicare allows for mask cushion replacement every three (3) months, and a complete mask system replacement every six (6) months. CPAP manufacturers and vendors suggest these replacement schedules as well. In our experience, most mask cushions begin to deteriorate after about six months of use.
Hereâs what you do: 1  Figure out the length that you want your finished sleeve to be. On the outside of the shirt, mark that spot with a line. 2  Using a see-through ruler or regular ruler, mark a line 1 Â½â underneath the first line. Use the ruler to continue that line across the sleeve. 3  Repeat on the other sleeve.  Cut on the second line you drew.
How to Measure Your Body: Sleeve Length. Place one end of the measuring tape at the base of the center of the back of the neck. Run the measuring tape over your shoulder, and let it hang down to your hand. Measure to the center of the meaty part of your palm. Do not adjust for shrinkage. We will do that for you.