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Respiratory Protection Effect of Earloop-type KF94 Masks according to the Wearing Method in COVID-19 Pandemic: a Randomized, Open-label Study

Yang HJ, Yoon H, Kang SY, Lee G, Park JE, Kim T, Lee SU, Hwang SY, Cha WC, Shin TG, Jo IJ

Background: Ear-loop-type Korean Filter 94 masks (KF94 masks, equivalent to the N95 and FFP2) are broadly used in health care settings in Korea for the coronavirus disease 2019 pandemic. Methods: A...
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The Use of Point-of-care Ultrasound in Emergency Medical Centers in Korea: a National Cross-sectional Survey

Yoo J, Kang SY, Jo IJ, Kim T, Lee G, Park JE, Hwang SY, Cha WC, Shin TG, Yoon H

Background: Point-of-care ultrasound (POCUS) is an essential tool in emergency medicine (EM). We aimed to investigate the current status and perception of POCUS use in emergency medical centers in Korea. Methods:...
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Injury patterns in cyclists with alcohol consumption

Jeong DU, Cha WC, Yoon H, Hwang SY, Shin TG, Sim MS, Jo IJ, Kim T

  • KMID: 2515961
  • J Korean Soc Emerg Med.
  • 2021 Apr;32(2):112-119.
Objective: As the cycling population grows, the lack of public awareness about the dangers of cycling while under the influence of alcohol is a signifant problem. The purpose of this...
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Future and Development Direction of Digital Healthcare

Kim HS, Kwon IH, Cha WC

Objectives: Digital healthcare is expected to play a pivotal role in patient-centered healthcare. It empowers patients by informing, communicating, and motivating them. However, a pragmatic evaluation of the present status...
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Predicting 30-day mortality of patients with pneumonia in an emergency department setting using machine-learning models

Kang SY, Cha WC, Yoo J, Kim T, Park JH, Yoon H, Hwang SY, Sim MS, Jo IJ, Shin TG

Objective This study aimed to confirm the accuracy of a machine-learning-based model in predicting the 30-day mortality of patients with pneumonia and evaluating whether they were required to be admitted...
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An Automated Fast Healthcare InteroperabilityResources-Based 12-Lead Electrocardiogram MobileAlert System for Suspected Acute Coronary Syndrome

Hur S, Lee J, Kim T, Choi JS, Kang M, Chang DK, Cha WC

Purpose: For patients with time-critical acute coronary syndrome, reporting electrocardiogram (ECG) findings is the most important component of the treatment process. We aimed to develop and validate an automated Fast Healthcare...
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An Electronic Health Record-Integrated Computerized Intravenous Insulin Infusion Protocol: Clinical Outcomes and in Silico Adjustment (Diabetes Metab J 2020;44:56-66)

Park SW, Lee S, Cha WC, Hur KY, Kim JH, Lee MK, Park SM, Jin SM

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Epidemiology and Outcome of Powered Mobility Device-Related Injuries in Korea

Shin Y, Cha WC, Yoon H, Hwang SY, Shin TG, Sim MS, Jo IJ, Kim T

BACKGROUND: This study described and analysed the features of powered mobility device (PMD)-related injuries and compared elderly and younger adult injuries. METHODS: Data from Korea Emergency Department-based Injury In-depth Surveillance (EDIIS)...
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An Electronic Health Record-Integrated Computerized Intravenous Insulin Infusion Protocol: Clinical Outcomes and in Silico Adjustment

Park SW, Lee S, Cha WC, Hur KY, Kim JH, Lee MK, Park SM, Jin SM

BACKGROUND: We aimed to describe the outcome of a computerized intravenous insulin infusion (CII) protocol integrated to the electronic health record (EHR) system and to improve the CII protocol in...
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The individual and neighborhood factors associated with the use of emergency medical services in patients with ST-elevation myocardial infarction

Choi H, Cha WC, Jo IJ, Choi JH, Sim MS, Shin T

Objective The utilization of emergency medical services (EMS) varies widely among communities. In this study, we aimed to evaluate the relationship between the use of EMS by patients with ST-elevation...
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Machine Learning and Initial Nursing Assessment-Based Triage System for Emergency Department

Yu JY, Jeong GY, Jeong OS, Chang DK, Cha WC

OBJECTIVES: The aim of this study was to develop machine learning (ML) and initial nursing assessment (INA)-based emergency department (ED) triage to predict adverse clinical outcome. METHODS: The retrospective study included...
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Targeted temperature management is related to improved clinical outcome of out-of-hospital cardiac arrest with non-shockable initial rhythm

Kim SG, Cha WC, Sim MS, Hwang SY, Shin TG, Park JH, Yoon H, Jo IJ, Choi JH

OBJECTIVE: The benefits of targeted temperature management (TTM) for resuscitated out of hospital cardiac arrest (OHCA) with an initial non-shockable rhythm are still unclear. This study examined whether TTM reduces...
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The Effect of Transport Time Interval on Neurological Recovery after Out-of-Hospital Cardiac Arrest in Patients without a Prehospital Return of Spontaneous Circulation

Park JH, Kim YJ, Ro YS, Kim S, Cha WC, Shin SD

BACKGROUND: Longer transport adversely affects outcomes in out-of-hospital cardiac arrest (OHCA) patients who do not return to spontaneous circulation (ROSC). The aim of this study was to determine the association...
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Short-term hemodynamic response to calcium supplementation in patients with refractory septic shock: a retrospective observational study

Chang HS, Hwang SY, Park JE, Kim T, Park JH, Yoon H, Cha WC, Sim MS, Jo IJ, Shin TG

OBJECTIVE: Research on calcium use as an adjunctive rescue therapy for refractory septic shock is limited. In this study, we aimed to investigate the short-term hemodynamic response after calcium supplementation...
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Effect of Watch-Type Haptic Metronome on the Quality of Cardiopulmonary Resuscitation: A Simulation Study

Choi B, Kim T, Yoon SY, Yoo JS, Won HJ, Kim K, Kang EJ, Yoon H, Hwang SY, Shin TG, Sim MS, Cha WC

OBJECTIVES: The aim of this study was to test the applicability of haptic feedback using a smartwatch to the delivery of cardiac compression (CC) by professional healthcare providers. METHODS: A prospective,...
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Deliberate Self-harm among Young People Begins to Increase at the Very Early Age: a Nationwide Study

Jung KY, Kim T, Hwang SY, Lee TR, Yoon H, Shin TG, Sim MS, Cha WC, Jeon HJ

BACKGROUND: Suicide in young people is one of most common cause of death; and deliberate self-harm (DSH) is important indicator of suicide. It is currently unclear how old the rate...
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Effect of typhoons on the Korean national emergency medical service system

Park SH, Cha WC, Kim G, Lee TR, Hwang SY, Shin TG, Sim MS, Jo IJ

OBJECTIVE: While the effect of typhoons on emergency medicine has been evaluated, data are scarce on their effects on the emergency medical service (EMS). This study evaluated the effect of...
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Sensitivity, specificity, and predictive value of cardiac symptoms assessed by emergency medical services providers in the diagnosis of acute myocardial infarction: a multi-center observational study

Park JH, Moon SW, Kim TY, Ro YS, Cha WC, Kim YJ, Shin SD

OBJECTIVE: For patients with acute myocardial infarction (AMI), symptoms assessed by emergency medical services (EMS) providers have a critical role in prehospital treatment decisions. The purpose of this study was...
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The Utility of Preliminary Patient Evaluation in a Febrile Respiratory Infectious Disease Unit outside the Emergency Department

Kang JS, Jhun BW, Yoon H, Lim SM, Ko E, Park JH, Hwang SY, Lee SU, Lee TR, Cha WC, Shin TG, Sim MS, Jo IJ

A febrile respiratory infectious disease unit (FRIDU) with a negative pressure ventilation system was constructed outside the emergency department (ED) of the Samsung Medical Center in 2015, to screen for...
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Impact of early coronary angiography on the survival to discharge after out-of-hospital cardiac arrest

Shin J, Ko E, Cha WC, Lee TR, Yoon H, Hwang SY, Shin TG, Sim MS, Jo IJ, Song KJ, Rhee JE, Jeong YK, Choi JH

OBJECTIVE: Acute myocardial infarction is a major cause of out-of-hospital cardiac arrest (OHCA). Coronary angiography (CAG) enables diagnostic confirmation of coronary artery disease and subsequent revascularization, which might improve the...
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