Building new standards to prevent harm from medication errors in children with cancer.

Children with cancer receive many medications outside the hospital administered by their caregivers. The study by Walsh et al. shows the number and types of medication errors in these patients. The study includes data from three different centers. Importantly, the study shows the types of errors that cause harm. The authors describe how the harmful errors can be prevented. We suggest ways these results can be used to identify which patients and families will benefit from additional attention. Providing more help at clinic and in the home may help prevent harmful medication errors in children with cancer.