Publications by authors named "Se Uk Lee"

: This study evaluates the impact of temporary telemedicine implementation on primary care visits, which surged during the COVID-19 pandemic in South Korea. : This study was conducted using national claims data from February 24, 2020 to February 23, 2021. The study included 1,926,300 patients with acute mild respiratory diseases and 1,031,174 patients with acute mild gastrointestinal diseases.

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Article Synopsis
  • The study analyzed the effectiveness and safety of telemedicine for chronic diseases in South Korea during the COVID-19 pandemic, focusing on a temporary telemedicine policy.
  • It utilized national health insurance claims data from before and after the policy's implementation, comparing patients who used telemedicine with those who did not across four chronic diseases.
  • Results indicated that telemedicine improved medication adherence for hypertension and diabetes without increasing hospital admissions, while those who did not use telemedicine faced higher admission rates.
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Background: Effective communication between patients and healthcare providers in the emergency department (ED) is challenging due to the dynamic nature of the ED environment. This study aimed to trial a chat service enabling patients in the ED and their family members to ask questions freely, exploring the service's feasibility and user experience.

Objectives: To identify the types of needs and inquiries from patients and family members in the ED that could be addressed through the chat service and to assess the user experience of the service.

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Aim: We assessed the efficacy of anti-hyperkalemic agents for alleviating hyperkalemia and improving clinical outcomes in patients with out-of-hospital cardiac arrest (OHCA).

Methods: This was a single-center, retrospective observational study of OHCA patients treated at tertiary hospitals between 2010 and 2020. Adult patients aged 18 or older who were in cardiac arrest at the time of arrival and had records of potassium levels measured during cardiac arrest were included.

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Background: Many cases of deep vein thrombosis (DVT) are diagnosed in the emergency department, and abbreviated lower extremity venous point-of-care ultrasound (POCUS) has already shown an accuracy comparable to that of specialists. This study aimed to identify the learning curve necessary for emergency medicine (EM) residents to achieve expertise-level accuracy in diagnosing DVT through a 3-point lower extremity venous POCUS.

Methods: This prospective study was conducted at an emergency department between May 2021 and October 2022.

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As point-of-care ultrasound (POCUS) is increasingly being used in clinical settings, ultrasound education is expanding into student curricula. We aimed to determine the status and awareness of POCUS education in Korean medical schools using a nationwide cross-sectional survey. In October 2021, a survey questionnaire consisting of 20 questions was distributed via e-mail to professors in the emergency medicine (EM) departments of Korean medical schools.

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  • The text addresses an error found in a previously published article, specifically the one with DOI: 10.1016/j.lanwpc.2023.100733.
  • It indicates that the correction is being made to ensure the accuracy of the information presented in the article.
  • This update is important for maintaining the integrity of academic research and ensuring that readers have access to the most reliable data.
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Objectives: Medical artificial intelligence (AI) has recently attracted considerable attention. However, training medical AI models is challenging due to privacy-protection regulations. Among the proposed solutions, federated learning (FL) stands out.

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This study aimed to compare the accuracy of real-time trans-tracheal ultrasound (TTUS) with capnography to confirm intubation in cardiopulmonary resuscitation (CPR) while wearing a powered air-purifying respirator (PAPR). This setting reflects increased caution due to contagious diseases. This single-center, prospective, comparative study enrolled patients requiring CPR while wearing a PAPR who visited the emergency department of a tertiary medical center from December 2020 to August 2022.

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Bacteremia is a life-threatening condition that has increased in prevalence over the past two decades. Prompt recognition of bacteremia is important; however, identification of bacteremia requires 1 to 2 days. This retrospective cohort study, conducted from 10 November 2014 to November 2019, among patients with suspected infection who visited the emergency department (ED), aimed to develop and validate a simple tool for predicting bacteremia.

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Introduction: In this study we aimed to investigate the prognostic accuracy for predicting in-hospital mortality using respiratory Sequential Organ Failure Assessment (SOFA) scores by the conventional method of missing-value imputation with normal partial pressure of oxygen (PaO)- and oxygen saturation (SpO)-based estimation methods.

Methods: This was a single-center, retrospective cohort study of patients with suspected infection in the emergency department. The primary outcome was in-hospital mortality.

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Article Synopsis
  • A study was conducted on severe community-acquired pneumonia (CAP) patients to compare those with bacteremia (blood infection) to those without, focusing on clinical characteristics and outcomes.
  • The results showed that bacteremia was present in 14% of severe CAP patients, with a higher occurrence of septic shock and increased hospital mortality in the bacteremia group.
  • Key factors linked to bacteremia included hematologic malignancies and septic shock, while chronic lung disease appeared to lower the risk of developing bacteremia in these patients.*
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We sought to determine whether blade size influences the first-pass success (FPS) rate when performing endotracheal intubation (ETI) with a C-MAC video laryngoscope (VL) in emergency department (ED) patients. This single-center, retrospective, observational study was conducted between August 2016 and July 2022. A total of 1467 patients was divided into two categories based on the blade size used during the first ETI attempt: blade-3 (n = 365) and blade-4 groups (n = 1102).

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  • To improve resuscitation outcomes during cardiac emergencies, the PReCAP model was created to predict the likelihood of return of spontaneous circulation (ROSC) at the scene of an out-of-hospital cardiac arrest (OHCA).
  • This model analyzes various prehospital data from the Pan-Asian Resuscitation Outcome Study (PAROS) database, which includes a significant number of patients, to provide real-time predictions on key survival metrics.
  • The PReCAP model shows strong predictive capabilities with AUROC scores ranging from 0.80 to 0.93 for different outcomes, indicating its potential use across diverse populations and locations.
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  • The study aimed to create a clinical support system using federated learning to improve the triage process in emergency departments by predicting when a revised Korea Triage Acuity Scale (KTAS) is needed.
  • Researchers analyzed data from over 11 million patients across different levels of emergency medical centers in South Korea, using patient demographics and initial KTAS scores to develop the prediction model.
  • The model showed varying performance levels in predicting triage needs across different cohorts, with higher rates of hospital admissions and mortality among patients with revised KTAS scores.
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  • The study aims to predict latent shock in patients by analyzing sequential changes in vital signs during emergency department visits.
  • Researchers used a large dataset of over 93,000 ED visits and applied various machine learning models, including logistic regression and neural networks, to create and validate their prediction model.
  • The model showed promising results, with AUROC values indicating strong predictive capability, outperforming traditional methods like the shock index in forecasting latent shock up to three hours in advance.
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This pilot study aimed to develop a new, reliable, and easy-to-use method for the evaluation of diastolic function through the M-mode measurement of mitral valve (MV) movement in the parasternal long axis (PSLA), similar to E-point septal separation (EPSS) used for systolic function estimation. Thirty healthy volunteers from a tertiary emergency department (ED) underwent M-mode measurements of the MV anterior leaflet in the PSLA view. EPSS, A-point septal separation (APSS), A-point opening length (APOL), and E-point opening length (EPOL) were measured in the PSLA view, along with the E and A velocities and e' velocity in the apical four-chamber view.

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Background: Field triage is critical in injury patients as the appropriate transport of patients to trauma centers is directly associated with clinical outcomes. Several prehospital triage scores have been developed in Western and European cohorts; however, their validity and applicability in Asia remains unclear. Therefore, we aimed to develop and validate an interpretable field triage scoring systems based on a multinational trauma registry in Asia.

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Objectives: The objective of this study was to define the care factors that are important to caregivers' satisfaction with pediatric laceration repair and the overall emergency department (ED) experience.

Methods: This was a cross-sectional observation study performed in an urban tertiary hospital. The caregivers of patients younger than 18 years who presented to the ED for laceration repair completed a survey.

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Background: Although chemotherapy-induced febrile neutropenia (FN) is the most common and life-threatening oncologic emergency, the characteristics and outcomes associated with return visits to the emergency department (ED) in these patients are uncertain. Hence, we aimed to investigate the predictive factors and clinical outcomes of chemotherapy-induced FN patients returning to the ED.

Method: This single-center, retrospective observational study spanning 14 years included chemotherapy-induced FN patients who visited the ED and were discharged.

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Background: In South Korea, after the spread of the Middle East Respiratory Syndrome epidemic was aggravated by long stays in crowded emergency departments (EDs), a 24-hour target policy for EDs was introduced to prevent crowding and reduce patients' length of stay (LOS). The policy requires at least 95% of all patients to be admitted, discharged or transferred from an ED within 24 hours of arrival. This study analyzes the effects of the 24-hour target policy on ED LOS and compliance rates and describes the consequences of the policy.

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Background: This study reports trends in pediatric out-of-hospital cardiac arrest (OHCA) and factors affecting clinical outcomes by age group.

Methods: We identified 4,561 OHCA patients younger than 18 years between January 2009 and December 2018 in the Korean OHCA Registry. The patients were divided into four groups: group 1 (1 year or younger), group 2 (1 to 5 years), group 3 (6 to 12 years), and group 4 (13 to 17 years).

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This study sought to determine whether the C-MAC video laryngoscope (VL) performed better than a direct laryngoscope (DL) when attempting endotracheal intubation (ETI) in the emergency department (ED) while wearing personal protective equipment (PPE). This was a retrospective single-center observational study conducted in an academic ED between February 2020 and March 2022. All emergency medical personnel who participated in any ETI procedure were required to wear PPE.

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Objective: We evaluated the performance of diastolic shock index (DSI) and lactate in predicting vasopressor requirement among hypotensive patients with suspected infection in an emergency department.

Methods: This was a single-center, retrospective observational study for adult patients with suspected infection and hypotension in the emergency department from 2018 to 2019. The study population was split into derivation and validation cohorts (70/30).

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