Opioid Overdoses

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One quarter of people who had a fatal overdose had recent interaction with health care system

One in four Ontarians who died of an opioid overdose during the pandemic had an interaction with the health care system in the week prior to their death, suggesting potential missed opportunities for supporting those at risk of overdose, a new report shows.

The report, a follow-up to data released in May 2021, analyzed accidental opioid-related deaths in Ontario from March to December 2020, as well as prior prescription medication and health care use among those who died, to identify opportunities for support and prevention. The report was led by researchers from the Ontario Drug Policy Research Network (ODPRN) at St. Michael’s Hospital of Unity Health Toronto, ICES, the Office of the Chief Coroner for Ontario, and Public Health Ontario.

The data shows people who died from opioid overdose frequently interacted with the health care system — defined as outpatient visits, primary care visits, emergency department visits or hospital admission — in the week and month before death. The findings also show only a quarter of those who died had a recent opioid prescription prior to death and almost half of those prescriptions were for methadone.

“There is often the idea that people who are at risk for overdose are not well-connected to the health care system, but we were struck by the relatively high number of health care encounters in the week and month before people died of an overdose,” said Dr. Gillian Kolla, co-author of the report and a Postdoctoral Fellow at the MAP Centre for Urban Health Solutions at St. Michael’s Hospital. While ensuring access is important, the data also suggests there is work to do to ensure the health care encounters that are occurring are better meeting the needs of people who use drugs, she said.

“Finding that one-quarter of people had been engaged in the health care system in a variety of settings in the week prior to death suggests an important missed opportunity for supporting people at risk of overdose,” said Dr. Tara Gomes, lead author of the report.

“Health care encounters are an opportunity to connect people who use drugs with community-based programs and services — including access to treatment, mental health services, harm reduction and housing support,” said Dr. Gomes, a Scientist at the Li Ka Shing Knowledge Institute of St. Michael’s Hospital and ICES, and a Principal Investigator of the ODPRN.

The authors of the report say the findings support calls for expanded access to low-barrier treatment in multiple health care settings, such as hospitals and primary care; expanded harm reduction services, including supervised consumption sites; access to a safer supply of drugs; and access to affordable housing.

“The loss of lives due to opioid toxicity in Ontario has only deepened during the COVID-19 pandemic. Understanding how people interact with health care providers, support systems and harm reduction services will help develop policies aimed at preventing further opioid-related deaths,” said Dr. Dirk Huyer, Chief Coroner for Ontario.

More than 2,000 people died in Ontario from accidental opioid overdose from March to December 2020. Rates of fatal opioid overdose in Ontario nearly doubled among males during the pandemic and rose 79 percent among individuals aged 25-44. The number of opioid-related deaths among people experiencing homelessness doubled and rates in Northern Ontario were almost three times higher than Southern regions of the province during the pandemic.

Using data from ICES, a not-for-profit research institute, the report found:

  • One in four had a health care encounter in the week prior to death and half had an encounter in the month prior to death.
  • One in three people who died during the pandemic accessed opioid agonist treatment in the past five years, but only one in 10 in the past 30 days.
  • Among people actively treated with methadone at time of death, two-thirds had visited an outpatient clinic in the week prior, highlighting another opportunity to connect people to additional supports.
  • Two in three deaths occurred among people with evidence of an opioid use disorder (OUD), meaning a third of fatal overdoses may be occurring among people without OUD diagnoses, or who may only intermittently or occasionally use drugs.

Though the role of prescription opioids was historically focused on as the major contributor to the overdose crisis, the report shows that the unregulated drug supply is primarily responsible for fatal overdoses, with deaths predominantly driven by fentanyl. The report found:

  • Non-pharmaceutical opioids were responsible for 89 percent of deaths, the vast majority of which involved fentanyl.
  • There was a five-fold increase in the detection of non-pharmaceutical benzodiazepines in fatal opioid poisonings during the pandemic. These drugs are often present in the unregulated opioid drug supply, and can increase sedation and complicate the overdose response when mixed with opioids.
  • One in 10 deaths during the pandemic involved only pharmaceutical opioids.

The report, entitled “Patterns of Medication and Healthcare Use Among People who Died of an Opioid-Related Toxicity during the COVID-19 Pandemic in Ontario,” was funded by the Government of Ontario and the Canadian Institutes of Health Research (CIHR).

Opioids statistics infographic
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