The nurse is inspecting the gums on a patient and notices redness and bleeding.
Which unexpected finding is present?

Choice A rationale

The sides of the mouth being symmetric when the patient smiles indicate intact function of the facial cranial nerve (CN VII). This nerve controls the muscles responsible for facial expressions, including smiling, frowning, and closing the eyes. Symmetry in these actions suggests that the facial nerve is functioning properly and that there is no nerve damage or weakness.

Choice B rationale

The patient's eyes moving to the left, right, up, down, and obliquely during conversation are functions of the oculomotor nerve (CN III), trochlear nerve (CN IV), and abducens nerve (CN VI), not the facial cranial nerve (CN VII). These nerves work together to control the movements of the eye muscles, enabling the eyes to move in different directions and maintain proper alignment.

Choice C rationale

Periodic blinking of the eyelids involves the oculomotor nerve (CN III) and the facial nerve (CN VII). The oculomotor nerve controls the muscles that lift the eyelid, while the facial nerve controls the muscles that close the eyelid. Blinking is a coordinated action involving both nerves, but the observation alone is not sufficient to determine the integrity of CN VII.

Choice D rationale

The patient moistening the lips with the tongue involves the function of the hypoglossal nerve (CN XII), which controls the movements of the tongue. The hypoglossal nerve is responsible for the motor control of most of the tongue muscles, allowing for actions like licking the lips, speaking, and swallowing. It is not related to the facial cranial nerve (CN VII).

Choice A rationale

Pallor refers to the pale appearance of the skin due to decreased blood flow or decreased hemoglobin levels. It is often seen in conditions such as anemia, where there is a reduced number of red blood cells or hemoglobin, leading to a lack of the red-pink tones normally present in healthy skin.

Choice B rationale

Cyanosis refers to a bluish discoloration of the skin and mucous membranes due to inadequate oxygenation of the blood. It is often seen in respiratory or cardiovascular conditions where there is a decrease in oxygen levels. Cyanosis does not describe the absence of red-pink tones from decreased hemoglobin.

Choice C rationale

Jaundice refers to a yellow discoloration of the skin and eyes due to elevated levels of bilirubin in the blood. It is often seen in liver conditions or hemolysis. Jaundice is not related to decreased hemoglobin levels or the absence of red-pink tones in the skin.

Choice D rationale

Erythema refers to redness of the skin caused by increased blood flow to the capillaries in the dermis. It is often associated with inflammation, infection, or skin irritation. Erythema indicates increased blood flow, not decreased hemoglobin levels.