Pancaking happens when there is a vacuum in the stoma bag and the bag sticks together. This stops the output from dropping to the bottom of the bag and can block the filter. There is then a risk that the pouch will be pushed off the abdomen.
What can you do to prevent pancaking?
Blowing air into the pouch before putting it on will help stop a vacuum from occurring. In addition, a drop of oil or lubricant in the pouch will help the output to get to the bottom of the bag.