Publications by authors named "Woo-Jin Jung"

Microbial agents such as the species are recognized for their role as biocontrol agents against various phytopathogens through the production of diverse bioactive compounds. This study evaluates the effectiveness of PE7 in inhibiting the growth of , the pathogen responsible for gummy stem blight (GSB) in cucurbits. Dual culture assays demonstrate significant antifungal activity of strain PE7 against .

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Background: Gastric inflation (GI) can induce gastric regurgitation and subsequent aspiration pneumonia, which can prolong intensive care unit stay. However, it has not been verified in patients with out-of-hospital cardiac arrest (OHCA). This study aimed to investigate the incidence of GI during prehospital resuscitation and its effect on aspiration pneumonia and resuscitation outcomes in patients with out-of-hospital cardiac arrest.

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Objectives: This study aimed to predict blood pressure during CPR using chest compression waveform information obtained from a CPR feedback device.

Methods: Quantitative data including chest compression waveforms from a CPR feedback device and the blood pressure measured by arterial cannulation in patients with cardiac arrest during CPR were used. Forty-one features to predict blood pressure were selected from chest compression waveform and demographic characteristics with neighborhood component analysis algorithm.

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Article Synopsis
  • This study investigates the link between vitamin D levels and sudden cardiac arrest (SCA) in out-of-hospital cardiac arrest patients compared to healthy individuals.
  • Using data from the CAPTURES II registry, researchers compared vitamin D levels in 454 OHCA cases and 454 matched controls, revealing lower levels in the OHCA group.
  • The findings suggest vitamin D deficiency significantly increases the risk of SCA, independent of other health factors, with severe deficiency showing a particularly high association with SCA incidence.
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Purpose: Previous studies have suggested that serum phosphate concentration is a prognostic factor in critically ill patients. However, the association between changes in serum phosphate levels and prognosis of patients with trauma remains unclear.

Materials And Methods: This study included patients with severe trauma who were treated at the emergency department.

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Background: Epinephrine is administered to increase coronary perfusion pressure during advanced life support and promote short-term survival. Recent cardiopulmonary resuscitation (CPR) guidelines recommend an epinephrine dosing interval of 3 to 5 minutes during resuscitation; however, scientific evidence supporting this recommendation is lacking. Therefore, we aimed to investigate the hemodynamic effects of repeated epinephrine doses during CPR by monitoring augmented blood pressure after its administration in a swine model of cardiac arrest.

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Purpose: End-tidal CO is used to monitor the ventilation status or hemodynamic efficacy during mechanical ventilation or cardiopulmonary resuscitation (CPR), and it may be affected by various factors including sodium bicarbonate administration. This study investigated changes in end-tidal CO2 after sodium bicarbonate administration.

Materials And Methods: This single-center, prospective observational study included adult patients who received sodium bicarbonate during mechanical ventilation or CPR.

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Background: Chest compression and defibrillation are essential components of cardiac arrest treatment. Mechanical chest compression devices (MCCD) and automated external defibrillators (AED) are used separately in clinical practice. We developed an automated compression-defibrillation apparatus (ACDA) that performs mechanical chest compression and automated defibrillation.

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Article Synopsis
  • - This study focused on the spread of infection in three psychiatric hospitals in South Korea, aiming to find causes and strategies to prevent further outbreaks during late 2020 and early 2021.
  • - A total of 358 inpatients were analyzed, revealing infections in 47, 193, and 118 patients across the three hospitals, with a much higher incidence (35.8%) among inpatients compared to employees (2.9%).
  • - Key issues included communication barriers among patients and hospital management problems, which complicated infection control; the study recommends improved preventive measures and screenings in psychiatric settings.
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Background: Automatic chest compression devices (ACCDs) can promote high-quality cardiopulmonary resuscitation (CPR) and are widely used worldwide. Early application of automated external defibrillators (AEDs) along with high-quality CPR is crucial for favorable outcomes in patients with cardiac arrest. Here, we developed an automated CPR (A-CPR) apparatus that combines ACCD and AED and evaluated its performance in a pilot animal-based study.

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Background And Objectives: Gait changes are potential markers of cognitive disorders (CDs). We developed a model for classifying older adults with CD from those with normal cognition using gait speed and variability captured from a wearable inertial sensor and compared its diagnostic performance for CD with that of the model using the Mini-Mental State Examination (MMSE).

Methods: We enrolled community-dwelling older adults with normal gait from the Korean Longitudinal Study on Cognitive Aging and Dementia and measured their gait features using a wearable inertial sensor placed at the center of body mass while they walked on a 14-m long walkway thrice at comfortable paces.

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Article Synopsis
  • The study aimed to assess whether the establishment of a trauma center at a tertiary hospital improved emergency care and outcomes for patients with traumatic brain injury (TBI).
  • Researchers analyzed TBI patients over an 8-year period, comparing those who received care before and after the trauma center's operation, focusing on emergency care times, hospital stays, and clinical outcomes.
  • Results showed that after the trauma center began operating, there was an increase in patients with better functional outcomes and surviving discharges, along with reduced emergency care times, though no significant changes were noted in intensive care unit stays or total length of hospitalization.
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This study aims to evaluate the effect of chitosan coating on the formation and properties of cyclic lipopeptide (CLP)-loaded liposomes. A nanoencapsulation strategy for a chitosan-coated liposomal system using lecithin phospholipids for the entrapment of antibiotic CLP prepared from KB21 was developed. The produced chitosan-coated CLP liposome had mean size in the range of 118.

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Determining the cause of cardiac arrest (CA) and the heart status during CA is crucial for its treatment. Transesophageal echocardiography (TEE) is an imaging method that facilitates close observation of the heart without interfering with cardiopulmonary resuscitation (CPR). Intra-arrest TEE is a point-of-care ultrasound technique that is used during CPR.

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Background: A proper nutritional plan for resuscitated patients is important in intensive care; however, specific nutritional guidelines have not yet been established. This study aimed to determine the incidence of diet-related complications that were affected by the timing of enteral nutrition in resuscitated patients after cardiac arrest.

Methods: This retrospective and 1:1 propensity score matching study involved patients who recovered after nontraumatic, out-of-hospital cardiac arrest at a tertiary hospital.

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Transarterial chemoembolization (TACE) is often used as a locoregional therapy for early hepatocellular carcinoma (HCC) when local ablation or resection are not feasible, but incomplete response and recurrence are commonly observed. In this study, we sought to determine the association between metformin administration and TACE outcomes for single nodular HCC in patients with type 2 diabetes mellitus (T2DM). The retrospective cohort analysis included 164 T2DM patients with single nodular HCC who underwent TACE as an initial treatment, and 91 were exposed to metformin before and after TACE.

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Background: Angiotensin type II receptor blockers (ARBs) are the most widely used anti-hypertensive drugs. This study aimed to elucidate the likelihood and pattern of ARB-induced liver injury in a hospital-based cohort.

Methods: Data of patients receiving fimasartan (n = 5,543), candesartan (n = 6,406), valsartan (n = 6,040), and losartan (n = 9,126) were retrieved from the clinical data warehouse of two tertiary hospitals.

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This study aimed to assess the trend of the maintenance status and usability of public automated external defibrillators (AEDs). Public AEDs installed in Seoul from 2013 to 2017 were included. An inspector checked the maintenance status and usability of the AEDs annually using a checklist.

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Objectives: A significant proportion of the population has a patent foramen ovale (PFO). The intracardiac pressure during cardiopulmonary resuscitation (CPR) may differ from that of normal circulation, which may result in a right-to-left shunt in the presence of a PFO. In this study, transesophageal echocardiography (TEE) was conducted to evaluate whether CPR carried out in patients after cardiac arrest causes right-to-left shunt.

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Aims: We investigated the impact of healthy lifestyle factors and cardiovascular comorbidities for sudden cardiac arrest.

Methods: A case-control study, including patients with sudden cardiac arrest aged 20-79 years and community-based 1:2 matched controls, was conducted from September 2017 to December 2020. All participants completed a structured questionnaire.

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In contrast to conventional 2-dimensional (2D) NAND flash memory, in 3D NAND flash memory, cell-to-cell interference stemming from parasitic capacitance between the word-lines (WLs) is difficult to control because the number of WLs, achieved for better packing density, have been dramatically increased under limited height of NAND string. In this context, finding a novel approach based on dielectric engineering seems timely and applicable. This paper covers the voltage interference characteristics in 3D NAND with respect to dielectrics, then proposes an alternative cell structure to suppress such interference.

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Background There is controversy over whether the number and mode of electrical shock are optimal for successful defibrillation. Methods and Results Fifty-four pigs were randomly assigned to 3 groups. After inducing ventricular fibrillation and a 2-minute downtime, basic life support was initiated with a 30:2 compression/ventilation ratio for 8 minutes.

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Background: Studies on patients with cardiac arrest or sepsis have reported that high initial phosphate levels are associated with poor outcomes. However, no previous study has investigated the association between initial phosphate levels and outcomes in blunt trauma patients.

Methods: This study was a retrospective observational study conducted on blunt trauma patients who had been treated at the single regional trauma center between January 2016 and December 2017.

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Purpose: Cardiopulmonary resuscitation guidelines recommend multimodal neuro-prognostication after cardiac arrest using neurological examination, electroencephalography, biomarkers, and brain imaging. The Patient State Index (PSI) and suppression ratio (SR) represent the depth and degree of sedation, respectively. We evaluated the predictive ability of PSI and SR for neuro-prognostication of post-cardiac arrest patients who underwent targeted temperature management.

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