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Impact of the COVID-19 outbreak on adult out-of-hospital cardiac arrest outcomes in Daegu, South Korea: an observational study

Ahn JY, Ryoo HW, Cho JW, Kim JH, Lee SH, Jang TC

Objective This study aimed to compare the outcomes of adult out-of-hospital cardiac arrest (OHCA) before and after the coronavirus disease 2019 (COVID-19) outbreak in a large metropolitan city. Methods This before-and-after...
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Public awareness and willingness to use automated external defibrillators in a metropolitan city

Lee JH, Lee DE, Ryoo HW, Moon S, Cho JW, Kim YJ, Kim JK, Kim JH, Lee KW, Jin Sc, Seo JS

Objective Early defibrillation is crucial for the survival of patients with out-of-hospital cardiac arrest. This study aimed to examine the trends and associated factors regarding public awareness and willingness to...
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Best practice guideline for patients requiring discharge against medical advice from emergency department

Ahn JY, Ryoo HW, Choi HJ, Kim HI, Jeong J, Bae HA

  • KMID: 2513374
  • J Korean Soc Emerg Med.
  • 2021 Feb;32(1):1-4.
Discharge against medical advice remains a problematic issue worldwide because it may not only lead to adverse medical outcomes for the patients but also medicolegal problems for emergency physicians. Recently,...
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Long-term benefits of chest compression-only cardiopulmonary resuscitation training using real-time visual feedback manikins: a randomized simulation study

Jang TC, Ryoo HW, Moon S, Ahn JY, Lee DE, Lee WK, Kwak SG, Kim JH

Objective Cardiopulmonary resuscitation (CPR) education with a feedback device is known to result in better CPR skills compared to one without the feedback device. However, its long-term benefits have not...
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Effect of trauma center establishment to clinical outcome of severe pediatric trauma patients: retrospective single center study

Jung H, Ryoo HW, Lee DE, Moon S, Ahn JY, Kim JK, Park JB, Seo KS

  • KMID: 2504653
  • J Korean Soc Emerg Med.
  • 2020 Jun;31(3):284-290.
Objective: Trauma death is one of the most preventable deaths by various efforts in the healthcare sector. The establishment of a regional trauma center will aid in efforts to reduce...
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Comparing the neurologic outcomes of patients with out-of-hospital cardiac arrest according to prehospital advanced airway management method and transport time interval

Kim S, Lee DE, Moon S, Ahn JY, Lee WK, Kim JK, Park J, Ryoo HW

Objective The incidences of prehospital advanced airway management by emergency medical technicians in South Korea are increasing; however, whether this procedure improves the survival outcomes of patients experiencing out-of-hospital cardiac...
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Comparison of the new and conventional injury severity scoring systems for predicting mortality in severe geriatric trauma

Ryu HW, Ahn JY, Seo KS, Park JB, Kim JK, Lee MJ, Ryoo HW, Kim YJ, Kim C, Choe JY, Lee DE, Yeo IH, Moon S, Cho Y, Chung HS, Cho JW, Jung H

  • KMID: 2511367
  • J Korean Soc Emerg Med.
  • 2020 Dec;31(6):543-552.
Objective: This study compared the prognostic performance of the following five injury severity scores: the Geriatric Trauma Outcome Score (GTOS), the Injury Severity Score (ISS), the New Injury Severity Score...
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Determining the correlation between outdoor heatstroke incidence and climate elements in Daegu metropolitan city

Kim JH, Ryoo HW, Moon S, Jang TC, Jin SC, Mun YH, Do BS, Lee SB, Kim JY

BACKGROUND: Heatstroke is one of the most serious heat-related illnesses. However, establishing public policies to prevent heatstroke remains a challenge. This study aimed to investigate the most relevant climate elements...
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Application of a Dual-Dispatch System for Out-of-Hospital Cardiac Arrest Patients: Will More Hands Save More Lives?

Kim JH, Ryoo HW, Kim JY, Ahn JY, Moon S, Lee DE, Mun YH

BACKGROUND: Recovery after out-of-hospital cardiac arrest (OHCA) is difficult, and emergency medical services (EMS) systems apply various strategies to improve outcomes. Multi-dispatch is one means of providing high-quality cardiopulmonary resuscitation...
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New Termination-of-Resuscitation Models and Prognostication in Out-of-Hospital Cardiac Arrest Using Electrocardiogram Rhythms Documented in the Field and the Emergency Department

Lee DE, Lee MJ, Ahn JY, Ryoo HW, Park J, Kim WY, Shin SD, Hwang SO, on behalf of the Korean Cardiac Arrest Research Consortium (KoCARC)

BACKGROUND: Electrocardiogram (ECG) rhythms, particularly shockable rhythms, are crucial for planning cardiac arrest treatment. There are varying opinions regarding treatment guidelines depending on ECG rhythm types and documentation times within...
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Validation of critical administration threshold and massive transfusion for mortality prediction in patients with adult severe trauma

Cho JW, Seo KS, Lee MJ, Park JB, Kim JK, Ryoo HW, Ahn JY, Moon S, Lee DE, Kim YJ, Choe JY

OBJECTIVE: A massive transfusion (MT) of 10 or more units of packed red blood cells (PRCs) focuses on the summation volumes over 24 hours. This traditional concept promotes survivor bias...
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Relationship between emergency department crowding and initial management, mortality of severe trauma patients

Park CW, Ahn JY, Seo KS, Park JB, Lee MJ, Kim JK, Ryoo HW, Kim YJ, Lee DE, Moon S, Choe JY

OBJECTIVE: This study examined whether emergency department (ED) crowding influences the timing of the initial assessment and treatment in severe trauma patients, as well as their mortality rates. METHODS: This retrospective,...
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Effects of chest compression only cardiopulmonary resuscitation training on retention of correct cardiopulmonary resuscitation knowledge

Choi SH, Ryoo HW, Lee DE, Moon SB, Ahn JY, Kim JK, Park JB, Seo KS

OBJECTIVE: Performing high quality cardiopulmonary resuscitation (CPR) is important for improving the survival rate with a good neurological outcome and fewer complications. The retention of accurate CPR knowledge is essential...
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Does the placement of automated external defibrillators affect first responders' willingness to perform cardiopulmonary resuscitation in high-rise residential buildings?

Lee DE, Ryoo HW, Ahn JY, Moon S, Kim JK, Kim YJ, Park JB, Kim JH, Lee KW, Jin SC

OBJECTIVE: The increasing number of people living in high-rise apartments may result in a delayed response from emergency medical technicians called out for an out-of-hospital cardiac arrest, making the role...
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Descending necrotizing mediastinitis after a trigger point injection

Choe JY, Kim JK, Lee DE, Seo KS, Park JB, Lee MJ, Ryoo HW, Ahn JY, Moon S

Descending necrotizing mediastinitis (DNM) is a rare form of mediastinal infection. Most cases are associated with esophageal rupture. DNM after a trigger point injection in the upper trapezius has not...
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Association of Public CPR Education with Willingness to Perform Bystander CPR: A Metropolitan City Wide Survey

Son JW, Ryoo HW, Moon S, Kim JY, Ahn JY, Park JB, Seo KS, Kim JK, Kim YJ

PURPOSE: Bystander cardiopulmonary resuscitation (CPR) is an important factor in improving the survival rate and neurologic prognosis for out-of-hospital cardiac arrest patients. Here, we aimed to establish factors related to...
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Association between public cardiopulmonary resuscitation education and the willingness to perform bystander cardiopulmonary resuscitation: a metropolitan citywide survey

Son JW, Ryoo HW, Moon S, Kim JY, Ahn JY, Park JB, Seo KS, Kim JK, Kim YJ

OBJECTIVE: Bystander cardiopulmonary resuscitation (CPR) is an important factor associated with improved survival rates and neurologic prognoses in cases of out-of-hospital cardiac arrest. We assessed how factors related to CPR...
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New Intervention Model of Regional Transfer Network System to Alleviate Crowding of Regional Emergency Medical Center

Ahn JY, Ryoo HW, Park J, Kim JK, Lee MJ, Kim JY, Shin SD, Cha WC, Seo JS, Kim YA

Emergency department (ED) crowding is a serious problem in most tertiary hospitals in Korea. Although several intervention models have been established to alleviate ED crowding, they are limited to a...
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Usefulness of Initial Red Cell Distribution Width for Predicting Mortality in Severe Trauma Patients Admitted to the Emergency Department

Park YS, Seo KS, Park JB, Lee MJ, Ryoo HW, Moon S, Kim JK, Lee DE, Ahn JY

PURPOSE: This study investigated the association between the initial red cell distribution width (RDW) and mortality in patients with severe trauma. METHODS: We conducted a retrospective analysis between January and December...
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Usefulness of New Berlin Definition of Polytrauma for Mortality Prediction in Adult Patients with Major Trauma

Kim IH, Seo KS, Lee MJ, Park JB, Kim JK, Ryoo HW, Ahn JY, Moon S, Lee DE, Park YS, Choe MS

PURPOSE: The terminology that represented major trauma was vague, inconsistent, and lacked validation. The objective of this study is to investigate the new definition of polytrauma in adult patients of...
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