Journal
JOURNAL OF PEDIATRIC PSYCHOLOGY
Volume 32, Issue 2, Pages 189-193Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/jpepsy/jsj114
Keywords
acute lymphoblastic leukemia; chemotherapy; methotrexate; neuropsychology
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Funding
- NICHD NIH HHS [HD37816] Funding Source: Medline
- NINR NIH HHS [NR04905] Funding Source: Medline
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Objective To compare the effects of two intravenous (IV) methotrexate (MTX) infusion protocols on cognitive function in children newly diagnosed with acute lymphoblastic leukemia (ALL). Methods We compared 19 children treated with 1g/m2 of IV MTX over 24 hr (Group 1) to 13 children treated with 2g/m2 of IV MTX over 4 hr (Group 2) on measures of working memory, nonverbal, and verbal skills shortly after diagnosis (Time 1) and 1 year later (Time 2). Results A significant Group x Time interaction was found for a composite measure of working memory with Group 2 declining from Time 1 to Time 2. Group 2 performed significantly worse than Group 1 on a composite measure of nonverbal skills at both time points. Conclusions Findings suggest that difficulties in working memory and nonverbal skills may be evident during the first year of treatment for ALL and that severity may be dependent on IV MTX dose and/or infusion rate.
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