During the finger-to-nose test, the examiner notes that the patient has difficulty touching their nose accurately and exhibits overshooting the target. This finding suggests:

Vertigo from an inner ear disorder

Cranial nerve II deficit

Normal age-related decline

Cerebellar dysfunction

Answer and Explanation

The Correct Answer is D

Cerebellar dysfunction manifests as a loss of coordination known as ataxia. During the finger-to-nose test, this often presents as dysmetria, where the patient's movements are jerky and inaccurately scaled. Overshooting or undershooting the target occurs because the cerebellum cannot effectively integrate proprioceptive data to modulate motor force.

A. Vertigo from an inner ear disorder: While vestibular issues cause balance problems and dizziness, they do not typically cause dysmetria in the upper extremities when the patient is seated. Vertigo affects the perception of motion and static equilibrium rather than the precision of coordinated, goal-directed limb movements.

B. Cranial nerve II deficit: The optic nerve is responsible for visual acuity and field of vision. While poor vision might make it harder to see the target, "overshooting" is a motor coordination error rather than a primary sensory deficit. A patient with a CN II deficit would struggle with sight, not necessarily limb trajectory control.

C. Normal age-related decline: While elderly patients may move more slowly, a healthy aging brain should still be able to coordinate reaching the nose without significant overshooting. Dysmetria and target-reaching errors are considered pathological neurological signs rather than standard consequences of the normal aging process.

D. Cerebellar dysfunction: The cerebellum is the brain's "coordinator" for smooth, precise movements. Inability to perform the finger-to-nose test accurately, specifically exhibiting overshooting (hypermetria), is a classic sign of a cerebellar lesion or intoxication. This finding is the definitive clinical indicator of impaired motor processing.

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Correct Answer is B

Explanation

Vertigo is a vestibular symptom characterized by a false perception of motion, often due to otolith displacement or vestibular nerve inflammation. Patients differentiate this from general lightheadedness by describing a rotational or "spinning" sensation. It frequently correlates with nystagmus and autonomic symptoms like nausea.

A. Feels pain when the auricle is pulled: Pain upon manipulation of the external ear or auricle is a classic sign of otitis externa, an infection of the ear canal. It is an inflammatory finding related to the outer ear. It is not a symptom of a vestibular balance disorder.

B. Describes a sensation of the room spinning: This is the subjective hallmark of vertigo. It indicates a conflict between visual, proprioceptive, and vestibular inputs. Whether the patient feels they are spinning or the room is spinning, this finding is diagnostic for vestibular dysfunction.

C. Reports a persistent ringing in the ears: Ringing in the ears is defined as tinnitus, which often accompanies hearing loss or Meniere's disease. While it can occur alongside vertigo, it is a separate sensory phenomenon. Tinnitus refers to sound, whereas vertigo refers to the perception of movement.

D. Has dry cerumen in the auditory canal: Cerumen, or earwax, is a normal secretion found in the external auditory canal. Unless it is completely impacted and causing conductive hearing loss, it is a benign finding. It does not cause the central or peripheral balance disturbances seen in vertigo.

A. Concave and pearly grey B. Opaque and red C. Convex and slightly white D. Straight and pink

Correct Answer is A

Explanation

The tympanic membrane is a thin, semitransparent partition separating the external auditory canal from the middle ear. During otoscopy, a healthy drum exhibits a pearly grey or translucent appearance with a distinct cone of light reflecting anteroinferiorly. Its concave morphology is maintained by the attachment of the malleus handle at the umbo.

A. Concave and pearly grey: This is the classic clinical description of a healthy eardrum. The concave shape results from the pull of the auditory ossicles, and the pearly grey color indicates the absence of middle ear effusion or infection. It reflects a normal, air-filled middle ear cavity.

B. Opaque and red: Redness and opacity suggest acute otitis media, where the membrane becomes hyperemic and thickened due to inflammation. This finding is pathological and often associated with pain and fever. It indicates a loss of transparency and healthy vascular regulation.

C. Convex and slightly white: A convex or bulging appearance indicates increased pressure within the middle ear, often from purulent fluid or effusion. A white appearance can signify myringosclerosis or scarring. It is not the expected finding for a healthy, functioning membrane.

D. Straight and pink: The tympanic membrane is naturally curved rather than straight. While mild pinkness can sometimes occur with crying or irritation, a truly healthy drum is grey. A straight appearance would suggest a lack of structural tension from the ossicular chain.

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During the finger-to-nose test, the examiner notes that the patient has difficulty touching their nose accurately and exhibits overshooting the target. This finding suggests:

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Naxlex Comprehensive Predictor Exams

Which assessment finding would be consistent with a person diagnosed with vertigo?

Correct Answer is B

Explanation

The normal tympanic membrane would be reflected in which description?

Correct Answer is A

Explanation

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