How should the opening for a skin barrier be sized for a stoma?

The correct sizing for the opening of a skin barrier for a stoma is 0.15 cm to 0.3 cm larger than the stoma itself. This size range is important to allow for proper adhesion of the barrier while also preventing irritation or damage to the skin surrounding the stoma. If the opening is too large, it can lead to exposure of the skin and an increased risk of leakage, skin irritation, or infection. Conversely, if the opening is too small, it can cause excess pressure on the stoma and hinder its function. Therefore, a size of 0.15 cm to 0.3 cm larger strikes a good balance, ensuring the barrier fits well without compromising the stoma or the surrounding skin integrity.