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Cognitive Function in Adults With Acute Myeloid Leukemia Treated With Chemotherapy: A Systematic Review
Ya-Ning Chan1, Stephanie Betancur, Jamie L Conklin
1Author Affiliations: School of Nursing (Dr Chan, Ms Betancur, and Drs Hirschey, Anderson, and Bryant), Health Sciences Library (Ms Conklin), and Lineberger Comprehensive Cancer Center (Drs Hirschey, Foster, and Bryant), University of North Carolina at Chapel Hill; Department of Exercise Science, Elon University (Dr Piepmeier), North Carolina; and School of Nursing, University of Pittsburgh (Dr Bender), Pennsylvania.
Background:
Chemotherapy is essential for treating acute myeloid leukemia (AML). Previous studies concluded that survivors of cancer who were treated with chemotherapy experience cognitive impairment. Therefore, it is important to understand cognitive function in survivors of AML.
Objective:
The aim of this study was to explore distributions and correlates of cognitive function, and prediction of cognitive function on other outcomes in adults with AML who were treated with chemotherapy.
Methods:
A health science librarian systematically searched PubMed, CINAHL, PsycINFO, and EMBASE databases. Two reviewers independently conducted the title, abstract, and full-text screening. Data were extracted and synthesized based on the aims of the review.
Results:
A total of 10 articles were included. Findings indicate that up to 62.2% of adults with AML experienced impaired cognitive function after starting chemotherapy. Three studies found cognitive function remained stable over time. Education and cytokines were potential correlates of cognitive function. Worse cognitive function may predict lower physical performance and higher mortality, although the results were inconsistent across studies.
Conclusion:
Impaired cognitive function was observed in adults with AML who were treated with chemotherapy. However, no study used a validated subjective cognitive-function-specific patient-reported questionnaire, and previous studies focusing on cognitive function included relatively young samples. Hence, further research on cognitive function in older adults with AML is needed.
Implications For Practice:
Because of the high prevalence of cognitive impairment identified, it is important to screen cognitive function in adults with AML who are planning to receive chemotherapy to intervene and provide support earlier.
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