Abstract 203: Characteristics of Emergency Medical Service Responses for Adults With Cardiovascular Disease-related Chief Complaints in The United States, 2016

Abstract

Background: Gaps exist in understanding the commonality of cardiovascular disease (CVD)-related responses by emergency medical services responders in the United States (US) community setting. Objective: We examined characteristics of CVD-related responses among US adults with 9-1-1 emergency medical services (EMS) responses in a national database. Methods: The 2016 National Emergency Medical Services Information System (NEMSIS) database (Version 2.2.1) from 49 states was used. CVD-related chief complaints were defined by data element E09_12 in the NEMSIS code book. Exclusions were EMS cancellations, persons not found, those with unknown sex, and patients aged <18 years. Rates (per 1,000 EMS responses) were calculated for total population and by patient demographics. Chi-square statistical tests were used to assess associations. Percentages of CVD-related chief complaints were calculated for EMS responses (incident patient disposition, type of destination, and reasons for destination), and clinical characteristics (provider’s primary impression, provider’s secondary impression, primary symptom, and EMS condition code). Results: We identified over 19.8 million EMS responses among adults aged ≥18 years old in 2016, including 1,336,684 (67.4 per 1,000 EMS responses) with CVD-related chief complaints. Rates of CVD-related chief complaints per 1,000 EMS responses for females (68.5), patients aged 65-74 years old (87.7), Hawaiian Pacific Islanders (83.6), whites (73.4), and those living in the South census region (72.8) were significantly higher than their respective counterparts. Among EMS responses, most CVD-related chief complaints were treated and transported by EMS (83.1%), and of those transported by EMS, 83.5% were transported to a hospital. Reasons for hospital destinations among adults with CVD-related chief complaints were patient’s preferred hospital (34%) and closest facility (32.9%). Most CVD-related chief complaints were chest pain or discomfort according to provider’s primary impression (48%) and provider’s secondary impressions (6.1%). Finally, pain (46.2%) was the most frequently reported condition as primary symptom among EMS patient with CVD-related chief complaints. Conclusion: Approximately 1-in-15 EMS (9-1-1) responses among adults involved a CVD-related chief complaint. Future research could focus on trends for CVD-related EMS responses overtime. Keyword: 9-1-1 emergency system, prehospital cardiovascular disease, CVD-related events.