Pressure ulcers/injuries related to improper wheelchair sizing and oxygen nasal cannulas or tubing are examples of ulcers related to:

Pressure ulcers or injuries that arise from improper wheelchair sizing and the use of oxygen nasal cannulas or tubing are indeed closely related to the equipment being used. When a wheelchair is not fitted correctly for an individual, it can lead to prolonged pressure on certain areas of the body, resulting in pressure ulcers. Similarly, if oxygen tubing is inadequately positioned, it can cause excessive friction or pressure against the skin, creating an environment conducive to skin breakdown.

The identification of these issues under "equipment" emphasizes the importance of ensuring that assistive devices are properly fitted and maintained to prevent injuries. This highlights a crucial aspect of care where the suitability and functioning of the equipment are directly linked to patient well-being.

In contrast, the other options focus on different causes of pressure ulcers. Shearing refers to skin layers being pulled in different directions, which is not primarily related to the equipment itself. The environment typically encompasses factors like temperature, humidity, and surface conditions that can contribute to skin integrity but do not specifically address the improper fitting of mobility or medical devices. Thus, recognizing that pressure ulcers from these scenarios are primarily attributable to equipment helps underline the significance of proper device selection and use in patient care.