Which of the following is not used to treat pressure injuries?

Treating pressure injuries involves using various strategies and equipment designed to relieve pressure, promote healing, and prevent further breakdown of the skin. Among the options provided, special beds, gel or fluid-filled pads and cushions, and heel and elbow protectors are all recognized methods for managing pressure injuries effectively.

Plastic draw sheets and waterproof pads, while commonly used in clinical settings for other purposes (such as maintaining hygiene and protecting bedding), do not directly contribute to the treatment or prevention of pressure injuries. They may even hinder treatment by creating a slippery surface, which can prevent repositioning or shifting pressure away from bony prominences. Thus, these products do not address the underlying issues of pressure management and skin protection as the other options do.

In summary, the reason that plastic draw sheets and waterproof pads are not utilized in the direct treatment of pressure injuries is that they lack the necessary qualities to alleviate pressure or protect vulnerable skin areas effectively.