The patient is suspected of having a new brain tumor. Which test will the nurse expect to be ordered to detect a small tumor?

A positive Romberg sign indicates impaired balance or proprioception, which can occur with malignant brain tumors affecting the cerebellum or sensory pathways. To assess for this sign, the nurse evaluates the client’s ability to maintain posture and equilibrium with visual input removed. A positive result suggests that visual cues are compensating for poor proprioception, leading to swaying or loss of balance when the eyes are closed. This test helps identify neurological impairment that increases the client’s fall risk.

Rationale for correct answer:
D. Have the client stand erect with eyes closed. This position removes visual input, revealing balance or proprioception deficits. Swaying or falling indicates a positive Romberg sign.

Rationale for incorrect answers:

A. Stroke the lateral aspect of the sole of the foot. This elicits the Babinski reflex, which assesses upper motor neuron function, not balance.

B. Ask the client to blink his eyes. This assesses cranial nerve function (CN V and VII) but is unrelated to the Romberg test.

C. Observe for facial drooping. This evaluates facial nerve function and stroke symptoms, not proprioception or balance.

Take home points

• A positive Romberg sign indicates impaired balance due to cerebellar or sensory pathway dysfunction.
• Testing involves standing with eyes closed to assess reliance on visual cues for balance.
• Fall precautions are essential for clients with positive Romberg results.

Early detection of brain tumors relies on imaging tests that can visualize small masses and structural changes. A CT scan is often the first diagnostic tool ordered because it provides detailed images of the brain, allowing detection of small tumors, edema, and mass effect. CT scans are quick, widely available, and highly sensitive for structural abnormalities, making them ideal for initial evaluation of new neurological symptoms.

Rationale for correct answer:

A. CT scan: Provides clear structural images that can identify small tumors and associated edema. It is fast and widely available, making it the first-line imaging study in suspected brain tumor cases.

Rationale for incorrect answers:
B. Angiography: Evaluates cerebral blood vessels and tumor vascularity but is not typically used for initial tumor detection. It is reserved for surgical planning or assessing vascular involvement.
C. Electroencephalography (EEG): Records electrical brain activity and is used for seizure evaluation, not structural tumor detection.
D. Positron emission tomography (PET) scan: Identifies areas of metabolic activity or recurrence but is not the primary tool for detecting small, new tumors.

Take home points

• CT scan is the first-line imaging study to detect new or small brain tumors.
• Angiography and PET scans are used for tumor characterization or surgical planning, not initial detection.
• EEG is useful for evaluating seizures but does not visualize structural lesions.