• Hannah N Collins, Amy J Poel, Jennifer Liu, Megin Parayil, Sarah Gimbel, and Julia E Hood.
• Public Health - Seattle & King County, Seattle, Washington.
• Prehosp Emerg Care. 2024 Sep 17: 141-4.

ObjectivesEmergency Medical Services patients who survive overdose are at high risk for subsequent overdose and death. Programs that seek to link overdose survivors to harm reduction and treatment services are increasingly common, though they vary in design and measured effect. Public Health - Seattle & King County (PHSKC) used a continuous quality improvement (CQI) process to assess and improve a phone-based model for post-overdose outreach in King County, Washington.MethodsKing County Emergency Medical Services (KC-EMS) health records are queried weekly to identify suspected opioid overdose and other drug-related encounters. Patients treated by KC-EMS that met outreach eligibility criteria were contacted by phone and offered referrals to local services. Three Plan-Do-Study-Act (PDSA) cycles were sequentially implemented to iteratively assess program indicators and implement program adaptations. The PDSA cycles varied in terms of eligibility criteria, outreach modality, and level of resources devoted to phone number searches. Program indicators and corresponding costs were measured for each phase and calculated per month, per eligible patient, and per patient referred to services.ResultsDuring the initial call-based outreach pilot, the fewest number of patients met eligibility criteria (monthly average =39) and were referred to services (monthly average =2). In Phase Two, outreach shifted to automated texting and eligibility criteria expanded, resulting in an increase in the monthly average number of eligible patients (monthly average =137) and patients referred to services (monthly average =3). Phase Three adaptations expanded eligibility criteria further but limited outreach to patients with a phone number documented in their KC-EMS record, resulting in an average of 405 eligible patients per month and four patients that were referred to services. The costs per patient referred to services changed from $454 in Phase one to $589 in Phase Two to $279 in Phase Three.ConclusionsThe PDSA process helped PHSKC's post-overdose outreach team identify adaptations to improve the efficiency of the post-overdose outreach program. The number of people referred to services was modest, reflecting the challenges of post-incident phone-based outreach. Our experience highlights the value of incorporating CQI processes in ongoing program operations and the need for a multi-pronged overdose prevention strategy.

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