270 Changes in Treatment of Out of Hospital Cardiac Arrest during COVID-19 Outbreak in Japan

Study Objectives: On December 31, 2019, China has reported about a cluster of pneumonia cases caused by unknown infection which would later be identified as coronavirus disease 2019 (COVID-19) The first case in Japan was diagnosed on January 28, 2020 On March 11, 2020, COVID-19 was qualified as a global pandemic by the World Health Organization (WHO) It was reported that there was possibility of increased risk of out-of-hospital cardiac arrest (OHCA) in patients with SARS-CoV-2 American Heart Association has issued guidelines to help rescuers treat cardiac arrest patients with suspected or confirmed COVID-19 Physicians had to deal with OHCA patients having no detailed history of COVID-19 during pandemic This may cause the changes in treatment of OHCA patients and their families However, little we knew about the changes occurred in Japan Therefore, our purpose was to investigate and clarify the changes in treatment of OHCA patients Methods: This was a Web-based questionnaire survey We developed a questionnaire to evaluate the changes in OHCA patients care The questionnaire consisted of two sections and 21 questions In the first section, we collected data about sex, post-graduate-year (PGY) and specialty Physicians were also asked to indicate prefectures where they work In the second part of questionnaire, we asked about the month when they started noticing COVID-19 We also asked them to answer with “Yes” or “No” if they have made changes to “Algorithm,” “Personal Protective Equipment (PPE)” and “Patient’s family support” for OHCA patients with details of particular changes for each question In addition, we asked to indicate their stress level from these changes [Likert scale;1 ∼ 10, 1: No Stress, 10: Severe Stress]” We have distributed the questionnaire among Emergency Medicine Alliance (https://www emalliance org/) mailing list members (total 3233 physicians registered as of May 23, 2020) The period of responses to questionnaire was from May 22 to June 5 of 2020 Results: During the study period, 110 physicians (3 4% out of total 3233 registered) with a median PGY of 12 (IQR 7-19) have submitted questionnaires, including 90 male (81 8%), 86 emergency physicians (78 2%), 16 internists (14 5%), 3 intensivists (2 7%) and 5 others (4 5%) Physicians were from the 30 prefectures of Japan (total 48 prefectures in Japan) The rate of answers about changes made to “Algorithm” was 78 2 %, “PPE” - 96 4%, “Family support” - 54 9 % The stress level due to the changes to “Algorithm” was 7 [IQR 5 - 8], “PPE” - 8 [IQR 6 - 9], “Family support” - 7 [5 - 8 5] Conclusion: We conclude that the way of treatment of OHCA patients might be changed and physicians might feel stress We will report our survey results with more details