Exam Guide
The Most Sensitive Sign of Neurological Change
Neurological · Question from the ATI RN Medical-Surgical 2023 Proctored Exam study set
Correct answer: C. Level of consciousness
Why this is the answer
A subtle change in alertness or orientation is usually the first thing to shift when the brain is under stress, making level of consciousness (LOC) the earliest and most sensitive marker. Pupillary changes (A) do occur with neurological decline, but typically after LOC has already begun to change. Motor response (B) changes, like weakness or posturing, tend to develop somewhat later as pressure or injury worsens. Vital sign changes (D), such as Cushing's Triad, are actually late, ominous signs of significant intracranial pressure — the least sensitive/earliest of the options.
The bigger concept
Neuro checks are ordered specifically so LOC is always assessed first, precisely because it's the most sensitive early warning — a nurse who notices "a little more drowsy than an hour ago" is often catching a problem well before any other sign would show it.
Related Neurological practice questions
- Testing Clear Nasal Drainage After a Head Injury
- The 'Halo Sign' After a Head Injury
- What a Positive Kernig's Sign Means
- Positive Babinski Sign in an Adult
- Positive Brudzinski's Sign: The Nurse's Immediate Action
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