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Lerner Center for Public Health Promotion and Population Health

Population Health Research Brief Series

When Every Second Counts: Racial and Ethnic Gaps in Bystander CPR for Opioid-Related Cardiac Arrests

Dessa K. Bergen-Cico, Alexandra Punch, and Mary E. Helander

October 2026

A smiling person with curly blonde hair, wearing a black top with gold embroidery.

Dessa Bergen-Cico


Each year, tens of thousands of Americans go into cardiac arrest after an opioid overdose, often in front of a family member, friend, or stranger.

In the minutes before an ambulance arrives, a bystander’s willingness to start CPR can mean the difference between life, lasting brain injury, and death. Yet that help isn’t reaching everyone equally. This brief describes racial and ethnic gaps in bystander CPR for opioid-related cardiac arrests.

The authors find that Black patients were 30 percent less likely, and Hispanic patients 19 percent less likely, than White patients to receive bystander CPR. Rates rose across all groups when 911 dispatchers walked callers through CPR instructions, though that benefit was strongest for White patients.

Lerner Center for Public Health Promotion and Population Health