Cannabis-related emergency department visits by youths and their outcomes in Ontario: a trend analysis

Abstract

Background: Cannabis-related emergency department visits can be an entry point for youths to mental health and substance use care systems. We aimed to examine trends in cannabis-related emergency department visits as a function of youths' age and sex. Methods:Using administrative data, we examined all visits to emergency departments in Ontario, Canada, from 2003 to 2017, by youth aged 10-24 years (grouped as 10-13, 14-18 and 19-24 yr) to determine trends in cannabis-related emergency department visits. Cannabis-related visits were identified using International Statistical Classification of Diseases and Related Health Problems, 10th Revision codes for cannabis poisoning and mental disorders due to cannabinoids. We categorized presentations as "less severe" versus "more severe" using scores assigned by nurses at triage. Results:We examined 14 697 778 emergency department visits. Cannabis-related visits increased from 3.8 per 10 000 youths (95% confidence interval [CI] 3.5-4.0) in 2003 to 17.9 (95% CI 17.4-18.4) in 2017, a 4.8-fold increase (95% CI 4.4-5.1). Rates increased for both sexes and each age group. Males were more likely to have a visit than females (rate ratios ≥ 1.5 in 2003 and 2017). The number of cannabis-related visits in 2017 was 25.0 per 10 000 (95% CI 24.0-25.9) among youth aged 19-24 years, 21.9 per 10 000 (95% CI 20.9-22.9) among those aged 14-18 years, and 0.8 per 10 000 (95% CI 0.5-1.0) among those aged 10-13 years. In 2017, 88.2% (95% CI 87.3%-89.0%) of cannabis-related visits and 58.1% (95% CI 58.0%-58.2%) of non-cannabis-related visits were triaged as "more severe," (rate ratio 1.52, 95% CI 1.50-1.53). Similarly, in 2017, 19.0% (95% CI 18.0%-20.1%) of cannabis-related visits and 5.8% (95% CI 5.7%-5.8%) of non-cannabis-related visits resulted in hospital admission (rate ratio 3.3, 95% CI 3.1-3.5).Interpretation: Rates of cannabis-related emergency department visit by youths aged 10-24 years increased almost fivefold from 2003 to 2017, with increases in visit severity and hospital admissions. These trends describe an emerging public health problem, and research is needed to identify the causes of this increase and the health and social consequences of cannabis-related visits for these youths.

Mental health adverse events with cannabis use diagnosed in the Emergency Department: what are we finding now and are our findings accurate?

“…However, Emergency Department presentations for cannabis intoxication or poisoning in children tend to include more physical symptoms such as ataxia, lethargy, and tachycardia, and not symptoms related to mental health. We do have evidence that these adverse events are increasing in frequency with one study reporting cannabis-related visits rose from 3.8 per 100,000 in a cohort with an upper age limit of 24 in 2003 to 17.9 per 100,000 in 2017 ( 50 ). While the upper age limit of 24 is a classification more of emerging adult than youth or children, it may be instructive to note that the setting for this study was in Canada where medical cannabis, but not recreational cannabis, was legal at the time.…”

Akute psychiatrische Störungsbilder und medizinische Notfälle im Zusammenhang mit dem Gebrauch von Cannabinoiden

“…Bei den intoxikationsbedingten Behandlungen in Notaufnahmen liegt häufig eine Assoziation mit Cannabi noidkonsum vor [17]. Zahlreiche Studien legen nahe, dass sich in den letzten Jahren die Raten der Behandlungen in Notaufnahmen, die mit dem Konsum von Cannabinoiden assoziiert sind, deutlich erhöht haben [18][19][20].…”

“…Die Intoxikationen mit Cannabinoiden können in Abhängigkeit von Art und Ausprägung des psychopathologischen Syndroms einem psychiatrischen Notfall entsprechen und eine akute medi zinische Versorgung erfordern [34]. In der Regel verlaufen Cannabinoidintoxikationen jedoch unkompliziert und be dürfen keiner Therapie [35], auch wenn die Häufigkeit von Fällen mit Cannabinoidintoxikationen in Notaufnahmen in den letzten Jahren zunimmt [18][19][20] ▶Weitere Fragen auf der folgenden Seite ……”