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  • Writer's pictureOren Zarif

The National Institutes of Health (NIHSS) Stroke Scale - Oren Zarif - Nih Stroke Scale


The NIHSS predicts the prognosis of patients with ischemic stroke quite accurately, with an aNIHSS score of greater than 16 indicating a high probability of death. A score of six or below suggests a high probability of recovery. Each additional point on the scale decreases the chances of a positive outcome by 17 percent. High scores indicate severe impairment or poor outcomes. The aNIHSS is useful in determining which treatments to choose after a stroke.

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The NIHSS is a 15-item neurological tool, divided into 11 sub-elements that evaluate the severity of cerebral infarction. Each item is scored on a three-to-five point scale, with 0 being normal and 42 being the most severe score. Hence, a higher NIHSS score indicates greater stroke severity. NIHSS scores are used by healthcare providers to determine the best treatment for patients suffering from ischemic stroke.

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The NIHSS has 11 different elements, and a patient's score can range from 0 to 4. Each element has a score, and the higher the score, the higher the risk of disability. While the NIHSS does capture the severity of a stroke, a patient's brain stem function is not fully captured. Further, the NIHSS does not account for strokes in the brain stem, which may have a different natural history.

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The NIHSS has also been used in clinical trials. Its scoring rules are not entirely clear, but they are needed for reproducibility. Some of these rules are counterintuitive, while others are necessary to ensure the accuracy of the results across many skill levels. The remaining NIHSS scoring rules are available in the online Data Supplement. The NIHSS is a useful tool for assessing stroke severity. Its use in clinical practice needs to be evaluated carefully outside of research trials.

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The NIHSS has been validated in a small cohort of stroke patients. NIHSS scores were found to correlate with lesion volume in 49 patients. Patients underwent MRI before receiving thrombolysis and were given the NIHSS on day one. The NIHSS score was significantly correlated with lesion volumes on diffusion-weighted imaging, time to peak delays, and the location of arterial occlusion.

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The NIHSS is a standardized method of assessing the severity of a stroke. Although family members and patients may not fully understand how to interpret the NIHSS, most NIHSS scores are highly accurate and tend to accurately predict damage. A stroke can have a significant impact on a patient's quality of life. It is important to understand how to read the NIHSS scores to determine if a stroke patient is eligible for a particular treatment.

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The SF-36 is composed of 11 elements. Each element is evaluated on a scale between zero and four. Some elements have a scale from 0 to 2, but the higher the number, the more severely impaired the patient is. This scale should be used only when the patient is conscious, although coma patients are often considered "comatose" and should be evaluated by a physician. The SF-36 is a useful tool for evaluating the severity of a stroke.

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NIHSS score is a powerful tool for predicting the prognosis of patients with ischemic stroke. In a study by Albers, Bates, Clark, Bell, and Hamilton (2000), a lower NIHSS score was associated with better outcome. An increase in the baseline NIHSS score from zero to five significantly decreased the chance of recovery by 22%, and a score of 10 or more reduced the probability by 75 percent.

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NIHSS reliability is not well-established, but it is still the gold standard for reporting patient outcomes. The NIHSS has been used as an outcome measurement in many studies, and it has been used as the de facto standard in regulatory compliance. However, there are several limitations of the NIHSS. To ensure that the NIHSS is as reliable as possible, a study must measure the severity of the stroke using the correct statistical method.

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