Which of the following best describes a method of positioning that can prevent pressure ulcers?

Repositioning every two hours is a fundamental intervention in preventing pressure ulcers. This method allows for the redistribution of pressure away from bony prominences and promotes blood circulation to the areas that are prone to pressure injuries. Pressure ulcers, also known as bedsores, typically occur due to sustained pressure on the skin, which can lead to reduced blood flow and ultimately skin and tissue damage.

Incorporating regular repositioning into a patient's care plan is essential, especially for individuals who may have limited mobility or are bedridden. By changing a patient's position frequently, caregivers can alleviate pressure and minimize the risk of skin breakdown, thus enhancing overall comfort and skin integrity.

Other approaches that involve leaving a patient in one position all day, avoiding movement, or encouraging long periods of sitting do not support skin health and actually increase the likelihood of developing pressure ulcers. Maintaining mobility and frequent position changes are critical aspects of effective nursing care in this context.