RUral dispaRities in prehospitAL STEMI

Achieving PCI time goals is influenced by multiple factors, such as patient attributes, agency factors and elements of organizational Emergency Medical Services (EMS) culture. Organizational culture is defined as a set of shared values, beliefs, and assumptions within an organization that influences how people within that organization behave. Differences in organizational culture between hospitals have been associated with both cardiovascular mortality and disease-specific outcomes. Although not yet rigorously studied in the prehospital environment, it is likely that organizational culture contributes to differences in tempo and manner of completing interventions. Prehospital performance accountability and culture have been discussed by experts in EMS magazines but have never been formally studied.

EMS STEMI protocols that include direct transportation to a PCI-capable hospital and pre-hospital PCI center activation improve patient outcomes. Unsuccessful EKG transmission, delayed PCI center activation, and cardiogenic shock have been shown to negatively affect PCI time metrics and patient outcomes. The impact of PCI delays in the rural setting has not been specifically studied. In addition, there are agency-level factors, such as ambulances per capita, number of satellite stations, miles of interstate that likely affect the EMS agency's ability to achieve shorter PCI times for the STEMI patients they care for. This proposal will use mixed methods to identify previously unmeasured components of rural EMS agency organizational culture, structure, care processes, and patient environment that likely influence PCI time and patient outcomes. In addition, this project will identify best practices that can be tested as novel interventions and implemented in rural EMS agencies to improve STEMI time metrics and therefore reduce patient morbidity and mortality.

STEMI Registry:

Inclusion:

• Age ≥ 18 years
• Transported to one of four primary PCI centers (Wake Forest Baptist Medical Center (WFBMC), High Point Regional Medical Center (HPRMC), Novant Forsyth Medical Center (FMC), and Moses Cone) by rural agency (county identified rural by 2014 Census) ambulance from 2016-2019
• STEMI identified prior to or upon arrival at hospital

Exclusion:

• None

Key Informant Interviews:

Inclusion:

• Rural agency (county identified rural by 2014 Census)
• Identified as the top or bottom two performing services ranked by overall PCI time by regional STEMI registry patients transported to primary PCI center from 2016-2019
• Hold the position of EMS Director, EMS Medical Director, EMS Training Officer, Paramedic (2), EMT Crew Partner (2) or hold a similar key informant position at a local urban EMS agency (Forsyth county EMS) to allow the interview guide to be field-tested

Exclusion:

• None

Stakeholder Survey:

Inclusion:

• Rural agency (county identified rural by 2014 Census) transported to primary PCI center from 2016-2019
• Hold the position of EMS Director, EMS Medical Director, or EMS Training Officer or be a field provider with a Paramedic or EMT certification

Exclusion:

• None