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Hyun Jin Byun

Yonsei University

About the Lab

Professor Hyun Jin Byun's research lab specializes in pediatric anesthesiology and critical care, focusing on optimizing sedation and airway management in children. The lab investigates pharmacodynamic and pharmacokinetic profiles of anesthetic agents such as propofol and ketamine to improve safety and efficacy in pediatric patients. It also explores emerging areas like epigenetics in anesthetic responses and innovative techniques such as electromagnetic guidance for ultrasound-guided procedures. The research emphasizes evidence-based practices in pediatric sedation, particularly in diagnostic imaging and emergency settings.

pediatric sedationanesthetic pharmacologyultrasonography guidanceepigenetics in anesthesiaairway management

Research Overview

Papers
7
Total Citations
23
Papers (5y)
6
Primary Field

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
6total
2016
2017
2018
2019
2026
Citations per year (5y)
23total
20162017201820192026

Selected Papers

7
1
Article|18 citations·2018
Safety and Efficacy of Off-label and Unlicensed Medicines in Children
이지현, 변효진, 최승은, 장영은, 김은희, 김진태, 김희수

Background: The aim of this study was to explore the use of off-label/unlicensed drugs to confirm the safety and efficacy of their prescription in children in Korea. Methods: In this retrospective study, we analyzed data of patients who received any of the 32 drugs between January–December 2014 in tertiary hospitals in Korea, including demographics, diagnoses, reasons for the medication, administration route, and details of adverse drug reactions. Additionally, the mortality in the cohort was as

2
Article|5 citations·2017
A Simulation Study of Propofol Effect-Site Concentration for Appropriate Sedation in Pediatric Patients Undergoing Brain MRI: Pharmacodynamic Analysis
라세희, 한동우, 송영, 김소연, 변효진, 정환호
https://www.eymj.org/DOIx.php?id=10.3349/ymj.2017.58.6.1216

Purpose: We aimed to establish the propofol effect-site concentration (Ce) for appropriate sedation by pharmacodynamic analysis and to determine the propofol Ce during occurrence of sedation-related side effects in pediatric patients undergoing brain magneticresonance imaging (MRI). Materials and Methods: In 50 pediatric patients scheduled for brain MRI, sedation was induced with 2.0 mg/kg propofol; additionalpropofol doses were 0.5−1 mg/kg. Propofol Ce was simulated by inputting the propofol ad

3
Article|0 citations·2016
The effect of electromagnetic guidance system on early learning curve of ultrasound for novices
변효진, 김은정, 민지영, 송정윤, 송경철, 송장호

Background: Electromagnetic guidance reveals needle alignment and position relative to the image plane on an ultrasound view. This study compared the early learning curves of novices performing ultrasound-guided needle placement with (n = 10) or without electromagnetic guidance (n = 10). Methods: Participants performed 30 ultrasound-guided needle placements using an echogenic stick (0.3-cm diameter) as a target inside a phantom model; this early learning period was divided into sequential period

4
Article|0 citations·2026
Epigenetics in anesthesiology: an overview and clinical relevance
변효진

Epigenetics, the study of heritable changes in gene expression that occur without altering the underlying DNA sequence, has emerged as an important conceptual framework for anesthesiology. The epigenome is organized into three mechanistic tiers: cytosine methylation in DNA, chemical modification of histone proteins, and gene regulation by non-coding RNA molecules. Unlike a relatively stable genome, epigenetic patterns vary between cell types, change throughout the lifespan, and are modifiable by

5
Article|0 citations·2019
Factors affecting determination of the optimal ketamine dose for pediatric sedation
민지영, 이정림, 김현일, 변효진
https://www.ceemjournal.org/journal/view.php?number=231

Objective Children are sedated before undergoing diagnostic imaging tests in emergency medi­cine or pediatric sedation anesthesia units. The aim of this study was to identify variables poten­tially affecting the dose of ketamine required for induction of sedation in pediatric patients un­dergoing diagnostic imaging.Methods This retrospective study included children aged 0 to 18 years who underwent sedation with ketamine for computed tomography or magnetic resonance imaging in the pediatric seda­

6
Article|0 citations·2015
Comparison between Glidescope and Lightwand for tracheal intubation in patients with a simulated difficult airway
양기환, 정찬호, 송경철, 송정윤, 송장호, 변효진

Background: Although Lightwand and Glidescope have both shown high success rates for intubation, there has been noconfirmation as to which device is most effective for difficult endotracheal intubation. We compared the Glidescope andLightwand devices in terms of duration of intubation and success rate at the first attempt in a simulated difficult airwaysituation. Methods: Fifty-eight patients were randomized to undergo tracheal intubation with either the Glidescope (Glidescopegroup, n = 29) or t

7
Article|0 citations·2026
Korean guidelines for pediatric procedural sedation
이혜미, 김영성, Kim Eun-Hee, Kim Jin-Tae, Park Seyeon, 박용희, 박지훈, 심정우, 오충식, Jang Young-Eun, Cho Sung-Ae, Joo Eun-Young

Safe and effective pediatric sedation depends on multiple factors, including the precise selection of sedative agents, provider expertise, availability of age-appropriate monitoring equipment, and the patients’ individual circumstances. These revised clinical practice guidelines, developed by the Korean Society of Pediatric Anesthesiologists, aim to promote safe and effective pediatric sedation across diverse clinical settings in Korea, thereby enhancing patient safety and standardizing care. Th

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