• Amanda S Dupont and Patrick S Walsh.
• Department of Pediatrics, Section of Pediatric Emergency Medicine, Medical College of Wisconsin, Milwaukee, WI, United States of America.
• Am J Emerg Med. 2024 Jan 1; 75: 119121119-121.

BackgroundRecent work has demonstrated that children with unintentional cannabis ingestions often undergo extensive ancillary testing such as head imaging or lumbar puncture. To better understand the yield of these tests, our objective was to describe the frequency of additional significant diagnoses in children with cannabis ingestion.MethodsWe performed a retrospective cross-sectional study of the Pediatric Health Information System (PHIS) database, including ED encounters from January 2016 to April 2023 with a diagnosis indicating cannabis exposure in children <6 years of age. We assessed the frequency of co-diagnoses that would be found on head imaging, lumbar puncture, or toxicology testing.ResultsWe included 4132 ED encounters for cannabis ingestion from 47 hospitals. Of these, 1243 (30%) received head imaging and 130 (3.1%) underwent lumbar puncture. There were 23 children (0.6%) with diagnosis of skull fracture or intracranial hemorrhage, 4 (<0.1%) with intracranial neoplasm, and 0 (0%) with a diagnosis for meningitis or intracranial abscess. Presence of discharge diagnosis for other drugs was also uncommon. The most frequent drug ingestion co-diagnoses were cocaine in 43 (1.0%) and opioids in 22 (0.5%) encounters.ConclusionIn children with cannabis intoxication, high rates of head imaging and lumbar puncture are likely driven by the signs of altered mental status at presentation. These data suggest that if cannabis ingestion is considered early and identified quickly with testing, neuroimaging, particularly that with ionizing radiation, may be low yield.Copyright © 2023 Elsevier Inc. All rights reserved.

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