Neuropsychologic impairment in adult bone marrow transplant candidates.

BACKGROUND: Long-term cognitive impairment has been reported in adult bone marrow transplant (BMT) recipients. However, the degree to which such impairment is attributable to the procedure or is a condition existing before BMT is not known.
METHODS: The presence, nature, and correlates of neuropsychologic impairment were investigated in 55 adult BMT candidates, all of whom had a malignant condition. Impairment was assessed using a screening battery of standardized neuropsychologic tests.
RESULTS: Results indicated that: (1) neuropsychologic performance was associated with specific disease and treatment risk factors, in particular a history of cranial radiation or central nervous system disease treated with intrathecal chemotherapy; (2) performance on tests reflecting memory or higher cognitive processing was more likely to be impaired; and (3) the risk of impairment increased as the number of disease and treatment risk factors for cognitive impairment in the patient increased.
CONCLUSIONS: It was concluded that neuropsychologic impairment occurs in a significant minority of adult patients before BMT. Research is necessary to determine the extent to which such impairment significantly compromises patients' abilities to: (1) make decisions regarding undergoing BMT or participating in research protocols and (2) understand and execute self-care behaviors after BMT. More broadly, greater attention should be devoted to investigating the presence of long-term neuropsychologic impairment in adult patients with cancer.