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Radiologic Insertion of a Covered Esophageal Stent Using the Rendezvous Technique: A Case Report
Yoojin Park,Suyoung Park,Jung Han Hwang,Jeong Ho Kim,So Hyun Park 대한영상의학회 2024 대한영상의학회지 Vol.85 No.4
In this report, we present a case of a radiotherapy-induced tracheoesophageal fistula treated with the fluoroscopy-guided insertion of a covered stent through the gastrostomy route using both the antegrade and retrograde approaches. The initial antegrade endoscopic and fluoroscopic stent insertion procedure failed due to severe esophageal stricture. Compared to the endoscopic approaches, fluoroscopy-guided radiologic procedures are generally less invasive and more successful because they allow for a better understanding of the anatomy outside the lumen during the procedure and enable the use of devices with smaller diameters.
Yoojin Park,Euncheol Son,Young June Choe,Cho Ryok Kang,Sangmi Roh,Young Ok Hwang,Sung-il Cho,Jihwan Bang 한국역학회 2023 Epidemiology and Health Vol.45 No.-
OBJECTIVES: Because effective decolonization options are not available, and treatment options are limited, carbapenem-resistant Enterobacterales (CRE) constitute increasingly threatening nosocomial pathogens. To prevent CRE-associated transmission and ensure patient safety, healthcare personnel and everyone in contact with CRE-infected patients must implement stringent infection control practices. This report describes a CRE outbreak, possibly related to a caregiver at a long-term care facility (LTCF), and presents a new surveillance model to improve the infection control of CRE in Seoul, Korea. METHODS: The Seoul Metropolitan Government surveillance system identified an outbreak of CRE in an LTCF in 2022. We obtained data on the demographic characteristics and contact histories of the inpatients, medical staff, and caregivers. To isolate the inpatients and employees exposed to CRE, we used rectal swab samples and environmental sampling during the study period (May-December 2022). RESULTS: We identified 18 cluster cases (1 caregiver and 17 inpatients) and 12 sporadic cases with CRE, and conducted a complete 197-day follow-up of all cases in the LTCF’s isolation wards. CONCLUSIONS: This investigation demonstrated that our surveillance model and targeted intervention, based on the cooperation of the municipal government, public health center, and infection control advisory committee, effectively contained the epidemic at the LTCF. Measures to improve the compliance of all employees in LTCFs with infection control guidelines should also be adopted.
Facile conversion of ATP-binding RNA aptamer to quencher-free molecular aptamer beacon
Park, Yoojin,Nim-anussornkul, Duangrat,Vilaivan, Tirayut,Morii, Takashi,Kim, Byeang Hyean Pergamon Press 2018 Bioorganic & medicinal chemistry letters Vol.28 No.2
<P><B>Abstract</B></P> <P>We have developed RNA-based quencher-free molecular aptamer beacons (RNA-based QF-MABs) for the detection of ATP, taking advantage of the conformational changes associated with ATP binding to the ATP-binding RNA aptamer. The RNA aptamer, with its well-defined structure, was readily converted to the fluorescence sensors by incorporating a fluorophore into the loop region of the hairpin structure. These RNA-based QF-MABs exhibited fluorescence signals in the presence of ATP relative to their low background signals in the absence of ATP. The fluorescence emission intensity increased upon formation of a RNA-based QF-MAB·ATP complex.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Park Yoojin,Huh In Sil,Lee Jaekyung,Kang Cho Ryok,조성일,Ham Hyon Jeen,Kim Hea Sook,Kim Jung-il,나백주,Lee Jin Yong,Seoul Metropolitan Government COVID-19 Rapid Response (SCoRR) Team 대한의학회 2020 Journal of Korean medical science Vol.35 No.45
Background: Following the coronavirus disease 2019 (COVID-19) outbreak in Wuhan, China, a total of 637 patients had been diagnosed with the disease in Seoul as of May 2, 2020. Our study aimed to describe the impact of the 3T strategies (preemptive testing, prompt tracing and proper treatment) on the epidemiological characteristics of COVID-19 in Seoul. Methods: The descriptive and explanatory analysis was carried out on critical indicators such as epidemiological characteristics and key duration of patient status change from January 24 to May 2 in Seoul before and after preemptive testing for patients under investigation associated with COVID-19 clusters. Results: Preemptive testing increased the positive test rate (3.9% to 4.2%), an asymptomatic case at diagnosis (16.9% to 30.6%), and reduced the time from symptom onset to quarantine (4.0 to 3.0 days). Prompt tracing decreased unknown sources of infection (6.9% to 2.8%), the mean number of contacts (32.2 to 23.6), and the time-varying reproduction number R(t) (1.3 to 0.6). With proper treatment, only 2 cases of mortality occurred, resulting in a fatality rate of just 0.3%. Conclusion: In the first wave of the COVID-19 pandemic lasting 100 days, the effect of the 3T strategies flattened the curve and decreased the time during which infected individuals were contagious, thereby lowering the R(t) below 1 in Seoul.
Yoojin Park,Eun Young Kim,Byungchul Yu,Kunwoo Kim The Korean Society of Traumatology 2024 大韓外傷學會誌 Vol.37 No.1
Misinterpreting radiographic findings can lead to unnecessary interventions and potential patient harm. The urgency required when responding to the compromised health of trauma patients can increase the likelihood of misinterpreting chest x-rays in critical situations. We present the case report of a trauma patient whose skin fold artifacts were mistaken for pneumothorax on a follow-up chest x-ray, resulting in unnecessary chest tube insertion. We hope to help others differentiate between skin folds and pneumothorax on the chest x-rays of trauma patients by considering factors such as location, shape, sharpness, and vascular markings.
Park, Yoojin,Kim, Ki Tae,Kim, Byeang Hyean The Royal Society of Chemistry 2016 Chemical communications Vol.52 No.86
<P>We have developed a simple and sensitive system for detecting AGG trinucleotide repeats through the formation of intermolecular G-quadruplexes using a fluorescent oligonucleotide. The fluorescence signal increased rapidly and dramatically by 44.7-fold with respect to the low background signal in the presence of RNA agg repeats and by 35.0-fold in the presence of DNA AGG repeats.</P>