Purpose: To conduct a randomized controlled pilot study investigating the use of high dose intravenous (IV) thiamine to prevent delirium and mitigate the long-term effects of delirium, including health-related quality of life (HRQOL), functional status, and neuropsychiatric outcomes, in patients admitted to University of North Carolina (UNC) Hospital for allogeneic hematopoietic stem cell transplant (HSCT). Participants: 60 adult inpatients admitted to the UNC Bone Marrow Transplant Unit for allogeneic stem cell transplant. Procedures (methods): Participants will be admitted for allogeneic HSCT and on the day after transplant randomized to seven days of high dose IV thiamine or placebo. Thiamine levels will be measured weekly and participants will be assessed for evidence of delirium using validated measures. Validated measures will also be used to assess cognitive function, depression, post-traumatic stress symptoms, functional status, and HRQOL prior to hospitalization and at one, three, and six months after transplant.
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Percentage of Participants With Delirium
Timeframe: Assessments will occur in the week prior to transplant, then 3 times weekly post-transplant until 30 days post-transplant or discharge, whichever comes first.