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NIH Stroke Scale/Score (NIHSS)

Calculates the NIH Stroke Scale for quantifying stroke severity.

Note: The NIH Stroke Scale requires that you understand the neurologic exam and has many caveats buried within it; if your patient has any prior known neurologic deficits (prior weakness, hemi- or quadriplegia, blindness, etc.), it becomes especially complicated; you should consult the NIH Stroke Scale website. MDCalc's version is an attempt to clarify many of these confusing caveats, but cannot and should not be substituted for the official protocol.

Calculations must be re-checked and should not be used alone to guide patient care nor should they substitute for clinical judgement. See our full disclaimer.