Youn-Jung Kim

Dr. Youn-Jung Kim


Research Focus & Metrics

Academic Career Length

9Years (2018-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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11 August 2020 in Intensive Care Medicine
Verified
Journal Article
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SHSung Yeon Hwang
Sung Yeon Hwang
SRSeung Mok Ryoo
Seung Mok Ryoo
JPJong Eun Park
Jong Eun Park
YJYou Hwan Jo
You Hwan Jo
DJDong-Hyun Jang
Dong-Hyun Jang
K(Korean Shock Society (KoSS)
Korean Shock Society (KoSS)

12 February 2019 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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JKJune-sung Kim
June-sung Kim
MKMuyeol Kim
Muyeol Kim
YKYoun-Jung Kim
Youn-Jung Kim
SRSeung Mok Ryoo
Seung Mok Ryoo
CSChang Hwan Sohn
Chang Hwan Sohn
WKWon young Kim
Won young Kim
(1) Background: Myocardial dysfunction in patients with sepsis is not an uncommon phenomenon, yet reported results are conflicting and there is no objective definition. Measurement of troponin may reflect the state of the heart and may correlate with echocardiographically derived data. This study aimed to evaluate the role of admission and peak troponin-I testing for the identification of sepsis-induced myocardial dysfunction (SIMD) by transthoracic echocardiography (TTE). (2) Methods: This was a retrospective cohort study using a prospective registry of septic shock at an Emergency Department from January 2011 and April 2017. All 1,776 consecutive adult septic shock patients treated with protocol-driven resuscitation bundle therapy and tested troponin-I were enrolled. SIMD was defined as left ventricular (LV) systolic/diastolic dysfunction, right ventricular (RV) diastolic dysfunction, or global/regional wall motion abnormalities (WMA). (3) Results: Of 660 (38.4%) septic shock patients with an elevated hs-TnI (≥0.04 ng/mL) at admission, 397 patients underwent TTE and 258 cases (65%) showed SIMD (LV systolic dysfunction (n = 163, 63.2%), LV diastolic dysfunction (n = 104, 40.3%), RV dysfunction (n = 97, 37.6%), and WMA (n = 186, 72.1%)). In multivariate analysis, peak hs-TnI (odds ratio 1.03, 95% confidence interval 1.01–1.06, p = 0.008) and ST-T wave changes in the electrocardiogram (odds ratio 1.82, 95% confidence interval 1.04–2.39, p = 0.013) were associated with SIMD, in contrast to hs-TnI level at admission. The area under the curve of peak hs-TnI was 0.668. When the peak hs-TnI cutoff value was 0.634 ng/mL, the sensitivity and specificity for SIMD were 58.6% and 59.1%, respectively. 4) Conclusions: About two-thirds of patients with an elevated hs-TnI level have various cardiac dysfunctions in terms of TTE. Rather than the initial level, the peak hs-TnI and ST-T change may be considered as a risk factor of SIMD.

21 May 2020 in The Clinical Respiratory Journal
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Journal Article
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WYWon Seok Yang
Won Seok Yang
HKHui Dong Kang
Hui Dong Kang
SJSang K. Jung
Sang K. Jung
YLYou Jin Lee
You Jin Lee
SOSe Hyun Oh
Se Hyun Oh
WKWon young Kim
Won young Kim

16 January 2019 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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TSTae Gun Shin
Tae Gun Shin
YKYoun-Jung Kim
Youn-Jung Kim
SRSeung Mok Ryoo
Seung Mok Ryoo
SHSung Yeon Hwang
Sung Yeon Hwang
IJIk Joon Jo
Ik Joon Jo
WKWon young Kim
Won young Kim
Background: Intravenous vitamin C and thiamine administration may be a potential adjuvant therapy for septic shock. We aimed to investigate the impact of early vitamin C and thiamine administration in septic shock patients. Methods: This retrospective before-and-after cohort study used data extracted from the Korean Shock Society’s prospective septic shock registry. We compared 28-day and in-hospital mortality rates between patients treated with intravenous vitamin C (3 g/12 h or 1.5 g/6 h) and thiamine (200 mg/12 h) <6 h after shock recognition from July through December 2017 (n = 229) and control patients from October 2015 through June 2017 (n = 915) using propensity score matching. Results: The 28-day (18.3% vs. 17.5%; p = 0.76) and in-hospital (16.6% vs. 18.3%; p = 0.55) mortality rates did not differ between treatment and control groups, nor did 28-day (18.5% vs. 17.5%; p = 0.84) and in-hospital (16.7% vs. 18.4%; p = 0.54) mortality rates after matching. In the subgroup analysis, treatment was associated with lower in-hospital mortality rates in patients with albumin 10. Conclusion: Early vitamin C and thiamine administration in patients with septic shock did not improve survival; however, administration could benefit conditions that are more severe, such as hypoalbuminemia or severe organ failure.

31 May 2019 in Acute and Critical Care
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Journal Article
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SJSung Min Jung
Sung Min Jung
YKYoun-Jung Kim
Youn-Jung Kim
SRSeung Mok Ryoo
Seung Mok Ryoo
WKWon young Kim
Won young Kim
Hemoglobin levels are a critical parameter for oxygen delivery in patients with shock. On comparing target hemoglobin levels upon transfusion initiation, the correlation between the severity of decrease in hemoglobin levels and patient outcomes remains unclear. We evaluated the association between initial hemoglobin levels and mortality in patients with septic shock treated with protocol-driven resuscitation bundle therapy at an emergency department. Data of adult patients diagnosed with septic shock between June 2012 and December 2016 were extracted from a prospectively compiled septic shock registry at a single academic medical center. Patients were classified into four groups according to initial hemoglobin levels: ≥9.0 g/dl, 8.0-8.9 g/dl, 7.0-7.9 g/dl, and <7.0 g/dl. The primary endpoint was 90-day mortality. In total, 2,265 patients (male, 58.3%; median age, 70.0 years [interquartile range, 60 to 78 years]) with septic shock were included. For the four groups, 90-day mortality rates were as follows: 29.1%, 43.0%, 46.5%, and 46.9% for ≥9.0 g/dl (n=1,808), 8.0-8.9 g/dl (n=217), 7.0-7.9 g/dl (n=135), and <7.0 g/dl (n=105), respectively (P<0.001). Multivariate logistic regression showed that initial hemoglobin levels were an independent factor associated with 90-day mortality and mortality proportionally increased with decreasing hemoglobin levels (odds ratio [OR], 1.88; 95% confidence interval [CI], 1.36 to 2.61 for 8.0-8.9 g/dl; OR, 1.97; 95% CI, 1.31 to 2.95 for 7.0-7.9 g/dl; and OR, 2.35; 95% CI, 1.52 to 3.63 for <7.0 g/dl). Low hemoglobin levels (<9.0 g/dl) were observed in approximately 20% of patients with septic shock, and the severity of decrease in these levels correlated with mortality.

31 May 2019 in Acute and Critical Care
Verified
Journal Article
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YKYoun-Jung Kim
Youn-Jung Kim
JBJun-Il Bae
Jun-Il Bae
SRSeung Mok Ryoo
Seung Mok Ryoo
WKWon young Kim
Won young Kim
The inactivated influenza vaccination is generally safe with mostly mild side effects. We report a rare but fatal adverse event following influenza vaccination. A previously healthy 27-year-old woman who received the influenza vaccination 3 days before presenting to the emergency department had rapidly aggravating dyspnea and mental deterioration. She was diagnosed as having acute fulminant myocarditis with refractory cardiogenic shock, which was successfully managed with veno-arterial extracorporeal membrane oxygenation. The cardiac function of the patient recovered in 3 weeks.