A nurse is preparing to lift a heavy object.
Which of the following actions by the nurse indicates an understanding of body mechanics?

Choice A rationale:

Piaget's formal operational stage is characterized by abstract thinking, hypothesis testing, and logical reasoning, but it does not include the development of object permanence. This stage typically occurs during adolescence, not in early childhood when object permanence is established.

Choice B rationale:

The preoperational stage is characterized by the development of symbolic thought and egocentrism but not object permanence. Object permanence starts to develop during the sensorimotor stage.

Choice C rationale:

Concrete operational thinking is focused on logical and systematic thinking related to concrete objects and events. It does not include the development of object permanence, which occurs in the earlier sensorimotor stage.

Choice D rationale:

Object permanence is a concept that develops during Piaget's sensorimotor stage, which typically occurs from birth to about two years of age. During this stage, children learn that objects continue to exist even when they are out of sight. They develop the ability to represent objects mentally and understand the concept of permanence.

Choice A rationale:

Full thickness skin loss with visible bone. This choice does not align with the description of a stage 2 pressure injury. Stage 2 pressure injuries are characterized by partial-thickness skin loss, but they do not involve visible bone. This description corresponds to a more severe stage of pressure injury.

Choice B rationale:

Intact skin with localized erythema. This choice describes a normal skin condition with localized redness (erythema) but does not indicate the presence of a pressure injury. Stage 2 pressure injuries involve partial-thickness skin loss, which means there is a break in the skin integrity.

Choice C rationale:

Full thickness skin loss with visible adipose tissue. This description is more in line with a stage 3 pressure injury, not a stage 2 injury. In stage 3, there is full-thickness skin loss, and adipose tissue may become visible in the wound bed. However, in stage 2, the skin loss is partial-thickness, and the wound bed typically contains red tissue.

Choice D rationale:

Partial-thickness skin loss with red tissue in the wound bed. This choice is the correct description of a stage 2 pressure injury. Stage 2 pressure injuries involve partial-thickness skin loss with the presence of red or pink tissue in the wound bed. It signifies damage to the epidermis and possibly the dermis. .