Bispectral Index Values Are Accurate Diagnostic Indices Correlated With Glasgow Coma Scale Scores

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Date: Apr. 2019
From: Journal of Neuroscience Nursing(Vol. 51, Issue 2)
Publisher: Lippincott Williams & Wilkins, WK Health
Document Type: Report
Length: 3,133 words
Lexile Measure: 1660L

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Abstract :

Objective: The Glasgow Coma Scale (GCS) is widely used in neurosurgery to evaluate the depth of coma in patients with brain injury. The bispectral index (BIS) was developed primarily to monitor the depth of unconsciousness. Recent evidence suggests that BIS may also help in the assessment of brain injury. This study explores the correlation between GCS scores and BIS values in patients with brain injury. Methods: Fifty patients were divided into 2 groups--moderate (GCS 9-12) and severe (GCS 3-8)--in this prospective, double-blind, observational study. Bispectral index data were recorded when electromyography was less than 40 and signal quality index was greater than 75 for 5 minutes. Linear regression was used to examine the correlation between BIS and GCS, and receiver operating characteristic curves were plotted. Cutoff points were identified to show the feasibility and accuracy of BIS for assessing brain injury. Results: The mean BIS value of the moderate group was 65.62 [+ or -] 12.84, and that of the severe group was 46.27 [+ or -] 17.35. Bispectral index values were significantly correlated with GCS ([R.sup.2] = 0.729, P Keywords: bispectral index, brain injury, correlation, diagnosis, Glasgow Coma Scale

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Gale Document Number: GALE|A581175524