An important part of colostomy care is establishing helpful, manageable routines, such as knowing how and when to change your colostomy bag. You can change your colostomy pouch as often as you want, usually after a bowel motion.
For a one-piece closed pouch, you will need to replace the entire pouch. With a two-piece pouch, you can replace the colostomy pouch as often as required and usually replace the baseplate (flange) once or twice a week.