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Prevalence and Improvement of Caine-Positive Wernicke-Korsakoff Syndrome in Psychiatric Inpatient Admissions

Shihong Lin, Idris E Leppla, Haijuan Yan, Julia M Probert, Privia A Randhawa, Jeannie-Marie S Leoutsakos, John C Probasco, Karin J Neufeld
Psychosomatics 2019 August 14
31607504

BACKGROUND: Wernicke-Korsakoff Syndrome (WKS) resulting from thiamine deficiency is classically defined as including encephalopathy, ataxia, and ophthalmoplegia. Only 16% of autopsy-confirmed patients with WKS exhibit all three signs. Caine-positive WKS criteria include two or more of the following: nutritional deficiency, delirium or mild memory impairment, cerebellar dysfunction/ataxia, and oculomotor abnormalities.

OBJECTIVE: We describe Caine-positive WKS prevalence among psychiatric inpatients and compare pretreatment-versus-posttreatment neurocognitive improvement to an unaffected group.

METHODS: This 6-month quality-improvement evaluation included two-stage screening for Caine-positive WKS, administering high-dose intravenous thiamine (day 1: 1200 mg; days 2-4: 200 mg) with reexamination on day 5. We used descriptive statistics and fitted random effects models to examine rate-of-change differences in pre-/posttreatment Montreal Cognitive Assessment (MoCA), delayed 5-item recall, and gait/coordination scores between treated Caine-positive patients with WKS and untreated Caine-negative patients.

RESULTS: Of 262 patients, 32 (12%) had Caine-positive WKS; 17 (53%) used alcohol currently. Treated Caine-positive WKS (n = 26) versus Caine-negative comparison (n = 34) before and after treatment observed a mean change (standard deviation) in the MoCA score of 3.6 (2.5) versus 1.8 (2.5) (P < 0.01); 5-item recall: 1.8 (1.4) versus 0.5 (1.4) (P < 0.001); gait/coordination scores: -0.6 (1.2) versus -0.1 (0.6) (P < 0.001). Oculomotor abnormalities were infrequent (n = 4 in Caine-positive WKS, n = 2 in Caine-negative comparison groups).

CONCLUSIONS: Caine-positive WKS prevalence among psychiatric inpatients was 12%; only half used alcohol. Patients treated with high-dose thiamine demonstrated clinically significant neurocognitive improvement.

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