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©2013 Baishideng Publishing Group Co.
World J Gastrointest Surg. May 27, 2013; 5(5): 146-155
Published online May 27, 2013. doi: 10.4240/wjgs.v5.i5.146
Table 2 Abridged version of West Haven criteria
HE grade Mental state
1Mild confusion, slowing of ability to do mental tasks, e.g., serial 7’s
2Drowsiness, inappropriate behaviour
3Somnolent but rousable, marked confusion
4Coma


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