Which of the following are considered normal findings for assessment of the respiratory system? Select all that apply.

Choice A rationale

Patches of eschar covering parts of the wound are characteristic of more advanced pressure ulcers, such as Stage III or IV, where necrotic tissue is present. Eschar is a dark, thick, leathery scab or crust that indicates deeper tissue damage and is not observed in Stage II pressure ulcers.

Choice B rationale

A Stage II pressure ulcer is characterized by partial thickness skin erosion with loss of the epidermis and dermis. It appears as a shallow open ulcer with a red-pink wound bed, indicating that the damage has not extended beyond these layers of skin.

Choice C rationale

When a pressure ulcer extends into the subcutaneous tissue, it is classified as a Stage III or IV ulcer, depending on the depth and extent of tissue involvement. Stage II ulcers are limited to the epidermis and dermis and do not reach the subcutaneous layer.

Choice D rationale

Intact skin that appears red but is not broken is indicative of a Stage I pressure ulcer, which represents the earliest stage of pressure injury. Stage I ulcers involve non-blanchable erythema (redness) but no open wound or skin erosion.

Choice E rationale

Open blister areas with a red-pink wound bed are characteristic of Stage II pressure ulcers. These ulcers exhibit partial thickness skin loss and can present as open or fluid-filled blisters with a visible wound bed.

Choice F rationale

Localized redness in light skin that blanches with fingertip pressure is typical of a Stage I pressure ulcer. Blanching erythema indicates that the skin is still viable and blood flow is present, which differentiates Stage I from more advanced stages of pressure injury.

Choice A rationale

The abducens cranial nerve (CN VI) controls the lateral rectus muscle of the eye, which is responsible for outward movement. It is not assessed using the Snellen visual acuity chart. The function of this nerve is tested through the evaluation of lateral eye movements.

Choice B rationale

The optic cranial nerve (CN II) is responsible for vision, including visual acuity and visual fields. It is assessed using the Snellen visual acuity chart to determine how well a person can see at various distances. This test evaluates the clarity and sharpness of vision, making CN II the correct answer.

Choice C rationale

The trochlear cranial nerve (CN IV) controls the superior oblique muscle, which helps with downward and inward eye movements. It is not assessed using the Snellen visual acuity chart but rather through the evaluation of eye movements and alignment.

Choice D rationale

The oculomotor cranial nerve (CN III) controls most of the eye's movements, including those of the superior, inferior, and medial rectus muscles, as well as the inferior oblique muscle. It is also responsible for controlling the pupil's response to light. The Snellen visual acuity chart does not assess the function of CN III, as it focuses on visual clarity and acuity.