The nurse is performing a neurological assessment on a client experiencing anosmia. The nurse would suspect cranial nerve involvement in which of the following?
1. Trochlear (cranial nerve IV)
2. Trigeminal (cranial nerve V)
3. Olfactory (cranial nerve I)
4. Oculomotor (cranial nerve III)
3
Rationale 1: The trochlear nerve (cranial nerve IV) is related to vision. Dysfunction of the trochlear nerve nerve may include diplopia or strabismus.
Rationale 2: The trigeminal nerve (cranial nerve V) is responsible for sensory impulses from scalp, upper eyelid, nose, cornea, and lacrimal gland. Dysfunction of the trigeminal nerve may be associated with a loss of facial sensation.
Rationale 3: Anosmia is the absence of the sense of smell and can be indicative of problems with the olfactory nerve (cranial nerve I).
Rationale 4: The oculomotor nerve (cranial nerve III) is associated with vision.
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