Which of the following best describes the NIH Stroke Scale range and interpretation?

• A. 0-11; higher scores indicate more severe deficits
• B. 0-42; higher scores indicate more severe deficits
• C. 0-50; higher scores indicate fewer deficits
• D. 0-60; higher scores indicate more severe deficits

Answer: (B)

The main idea here is how the NIH Stroke Scale works: it’s a structured bedside tool that quantifies neurological impairment after an acute stroke. The total score ranges from 0 to 42, and higher scores reflect greater deficits. This makes sense because the scale aggregates several domains of function—level of consciousness, vision, gaze, facial palsy, motor strength in the arms and legs, ataxia, language, and attention—each scored up to a maximum that contributes to a final sum. When deficits are widespread or severe across these domains, the total can approach 42; a score of 0 means no detectable deficit.

Interpreting the score helps you gauge severity and track changes over time. Generally, a 0 indicates no impairment; small scores suggest minor strokes, while higher scores indicate moderate to severe neurologic impairment and can be associated with worse prognosis. The NIHSS is used to triage, monitor progression or improvement, and inform decisions about treatment options and expected outcomes.

The other described ranges are not correct because they either give an incorrect total span or imply that higher scores mean fewer deficits, which contradicts how the scale is designed. Here, the correct framing is that the scale goes from 0 to 42, with higher numbers signaling greater neurological impairment.