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	Critères de West Haven pour l'encéphalopathie hépatique	Score de Mayo pour la rectocolite hémorragique
Domaine	Gastro-entérologie	Gastro-entérologie
Famille	Process / pipeline	Process / pipeline
Année d'origine	1966 (original), 1978 (formalized)	1987
Auteur d'origine	West Haven Group (Parsons, Williams, Sherlock, Trey, Davidson)	Schroeder, K. W., Tremaine, W. J., and Ilstrup, D. M.
Type	Clinician-rated	Clinician-rated
Source fondatrice	Parsons, P. L., Williams, R., & Sherlock, S. (1978). The role of plasma amino acids in hepatic encephalopathy and the effect of branched-chain amino acid infusion. Gut, 19(10), 969–978.	Schroeder, K. W., Tremaine, W. J., & Ilstrup, D. M. (1987). Coated oral 5-aminosalicylic acid therapy for mildly to moderately active ulcerative colitis. New England Journal of Medicine, 317(26), 1625–1629.
Alias	Hepatic Encephalopathy Grading, HE Grade, West Haven Grade	Mayo Clinic Score, UC Mayo Score
Apparentées	4	4
Résumé	The West Haven Criteria are the standard for grading hepatic encephalopathy (HE) severity, ranging from subclinical (Grade 0) to deep coma (Grade 4). Developed by Trey and Davidson in the 1960s and refined by the West Haven group, these criteria integrate mental status changes (confusion, asterixis, disorientation) and consciousness level to stage HE. The West Haven grade is a strong predictor of short-term prognosis in cirrhosis and guides urgency of intervention (lactulose, rifaxomicin, mannitol, intubation).	The Mayo Score is a validated tool for assessing disease activity in ulcerative colitis, integrating clinical symptoms and endoscopic findings. Introduced by Schroeder and colleagues in 1987, it has become the reference standard for UC activity assessment in clinical trials and practice. The score combines stool frequency, rectal bleeding, overall physician global assessment, and endoscopic subscore into a single 0–12 scale.