Wernicke-Korsakoff syndrome in head injury: a missed insult.

A survey of the use of thiamine in patients at risk from Wernicke-Korsakoff syndrome (WKS) in Scottish specialist neurosurgical units, and a 2-year retrospective study of 218 at-risk patients admitted to a regional neurosurgical unit with a head injury were undertaken. Although responses to the survey indicated otherwise, the study revealed that there was no consistent practice regarding thiamine administration. Overall, 20.6% of patients received thiamine, with an alcohol history being the only factor correlating with thiamine administration. Of known alcoholics and heavy drinkers, 56.1% and 26.2% respectively received thiamine as in-patients; 44.5% of patients received additional carbohydrate loads in the form of i.v. dextrose or parenteral nutrition, but only 28.9% of these received thiamine as well. Although the actual thiamine status of these patients was not known, given the difficulties of diagnosing WKS in the presence of a head injury, the conclusion is that written protocols are needed in units to ensure that head injury patients at risk of WKS receive appropriate thiamine treatment or prophylaxis.