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Park Mikyoung,Hur Mina,Kim Hanah,Lee Chae Hoon,Lee Jong Ho,Lee Jong Ho,Nam Minjeong 대한진단검사의학회 2022 Annals of Laboratory Medicine Vol.42 No.4
Background: Biomarkers and clinical indices have been investigated for predicting mortality in patients with coronavirus disease (COVID-19). We explored the prognostic utility of procalcitonin (PCT), presepsin, and the Veterans Health Administration COVID-19 (VACO) index for predicting 30-day-mortality in COVID-19 patients. Methods: In total, 54 hospitalized COVID-19 patients were enrolled. PCT and presepsin levels were measured using the Elecsys BRAHMS PCT assay (Roche Diagnostics GmbH, Mannheim, Germany) and HISCL Presepsin assay (Sysmex, Kobe, Japan), respectively. The VACO index was calculated based on age, sex, and comorbidities. PCT and presepsin levels and the VACO index were compared using ROC curve, Kaplan–Meier method, and reclassification analysis for the 30-day mortality. Results: ROC curve analysis was used to measure PCT and presepsin levels and the VACO index to predict 30-day mortality; the optimal cut-off values were 0.138 ng/mL for PCT, 717 pg/mL for presepsin, and 12.1% for the VACO index. On Kaplan–Meier survival analysis, hazard ratios (95% confidence interval) were 15.9 (4.1-61.3) for PCT, 26.3 (6.4-108.0) for presepsin, and 6.0 (1.7-21.1) for the VACO index. On reclassification analysis, PCT and presepsin in addition to the VACO index significantly improved the prognostic value of the index. Conclusions: This study demonstrated the prognostic utility of measuring PCT and presepsin levels and the VACO index in COVID-19 patients. The biomarkers in addition to the clinical index were more useful than the index alone for predicting clinical outcomes in COVID-19 patients.
Questionnaire Survey on Current Red Blood Cell Transport and Storage in Korea for Reducing Wastage
Park Mikyoung,Hur Mina,Kim Hahah,Oh Kyungmi,Kim Hyunmi,Song Young Hye,Ko Dae-Hyun,Chung Yousun 대한진단검사의학회 2022 Annals of Laboratory Medicine Vol.42 No.3
Background: To ensure safe red blood cell (RBC) transfusion practice, it is important to comply with storage and transport requirements of RBC units. We conducted a comprehensive survey on the practice of RBC transport and storage to explore the awareness of and compliance with the 30-minute rule, the current status of RBC unit transport, and possible utility of temperature indicators (TIs) to reduce RBC wastage. Methods: From June to August of 2019, 64 blood bank physicians (14 questions) in 64 secondary- and tertiary-care hospitals and 673 nurses (13 questions) in 42 tertiary-care hospitals replied to a questionnaire survey. The results of the survey were analyzed with descriptive statistics. Results: Among the physicians surveyed, 97.0% (N=62) of hospitals had transfusion guidelines in place. The RBC wastage in 2018 ranged from less than five units to more than 200 units. Among the nurses surveyed, 99.4% (N=669) were aware of and complied with the 30-minute rule; 13.5% (N=91) of the nurses had experience of RBC wastage due to violation of the 30-minute rule. Both physicians (67%, N=43) and nurses (83.1%, N=559) responded that TIs would help reduce RBC wastage. Conclusions: This is the first survey on the practices related to RBC transport and storage in Korea. This study provides fundamental data on current practice for the blood cold chain, insights into RBC wastage, and highlights the utility of TIs.
Mikyoung Park,Eungeun Kim,HeeJung Kang,Young Huh 대한전자공학회 2007 ITC-CSCC :International Technical Conference on Ci Vol.2007 No.7
The objective of this study was to examine the changes of the pulse waves according to three regions of radial artery. In Korean traditional medicine, the pulse shape of three regions of radial artery can give different information about the patient’s health condition. Therefore we examined the characteristics of pulse wave measured on each region. Fifty one subjects participated in this study. One region was designated at radial bone and two regions were designated 1cm apart from it. Applied pressure, energy, period, amplitude of first peak and first valley, amplitude of second peak and second valley, amplitude of third peak, time to first peak and first valley, time to second peak and second valley, time to third peak, systolic duration, diastolic duration and area of pulse waves were analyzed. P-values of applied pressure, energy, amplitude of first peak, amplitude of second peak, amplitude of second valley, time to first peak, time to second peak and area of pulse wave were less then the significance level of 0.05. Therefore we could conclude that the pulse wave obtained from three regions of radial artery had different characteristics. This preliminary study showed that we should designate exact position before pulse wave analysis.
Current Status of Flow Cytometric Immunophenotyping of Hematolymphoid Neoplasms in Korea
Park Mikyoung,Lim Jihyang,Ahn Ari,Oh Eun-Jee,Song Jaewoo,Kim Kyeong-Hee,Han Jin-Yeong,Choi Hyun-Woo,Park Joo-Heon,Shin Kyung-Hwa,Kim Hyerim,Kim Miyoung,Hwang Sang-Hyun,Kim Hyun-Young,Cho Duck,Kang Eun 대한진단검사의학회 2024 Annals of Laboratory Medicine Vol.44 No.3
Background: Flow cytometric immunophenotyping of hematolymphoid neoplasms (FCI-HLN) is essential for diagnosis, classification, and minimal residual disease (MRD) monitoring. FCI-HLN is typically performed using in-house protocols, raising the need for standardization. Therefore, we surveyed the current status of FCI-HLN in Korea to obtain fundamental data for quality improvement and standardization. Methods: Eight university hospitals actively conducting FCI-HLN participated in our survey. We analyzed responses to a questionnaire that included inquiries regarding test items, reagent antibodies (RAs), fluorophores, sample amounts (SAs), reagent antibody amounts (RAAs), acquisition cell number (ACN), isotype control (IC) usage, positive/negative criteria, and reporting. Results: Most hospitals used acute HLN, chronic HLN, plasma cell neoplasm (PCN), and MRD panels. The numbers of RAs were heterogeneous, with a maximum of 32, 26, 12, 14, and 10 antibodies used for acute HLN, chronic HLN, PCN, ALL-MRD, and multiple myeloma-MRD, respectively. The number of fluorophores ranged from 4 to 10. RAs, SAs, RAAs, and ACN were diverse. Most hospitals used a positive criterion of 20%, whereas one used 10% for acute and chronic HLN panels. Five hospitals used ICs for the negative criterion. Positive/negative assignments, percentages, and general opinions were commonly reported. In MRD reporting, the limit of detection and lower limit of quantification were included. Conclusions: This is the first comprehensive study on the current status of FCI-HLN in Korea, confirming the high heterogeneity and complexity of FCI-HLN practices. Standardization of FCI-HLN is urgently needed. The findings provide a reference for establishing standard FCI-HLN guidelines.
Investigations on IT/ET and IT/BT Convergence Technology Using Power Line Communications
Mikyoung Park(박미경),Young Huh(허영),Sang Ki Oh(오상기) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.10
Due to enhanced high IT (information technology) development, IT-based technology convergences such as IT/ET(electric technology), IT/BT(biology technology) and IT/NT(nano technology) are actively merging trend and their applications spread wide. In this paper PLC (power line communication), one of the merging IT, is investigated as one of the potential IT candidates for IT/ET and IT/BT convergence technology for DLC (direct load control) or bio-medical engineering such as ubiquitous health cares or D2H2 (distributed diagnosis and home health care).
한국어 듣기 자료의 음성·음운론적 고찰 - 발음과 발화 속도를 중심으로
박미경 ( Mikyoung Park ),노석은 ( Seokeun Noh ),도원영 ( Wonyoung Doh ) 고려대학교 민족문화연구원 2016 民族文化硏究 Vol.72 No.-
본 연구는 한국어 교재의 듣기 자료에서 제공되는 음성이 한국어 듣기 학습에 적절한 형식으로 구성되었는지 살피고 평가 기준 설정에 필요한 음성·음운론적 요건을 고찰하는 것을 목적으로 하였다. 평가 기준 설정을 위해 3종의 기능 통합교재의 듣기 자료를 발음과 발화 속도를 중심으로 분석하여 음성 실현 양상을 관찰하였다. 이 결과를 바탕으로 규범성과 실제성을 포괄하여 교육적 음원에 대한 평가에 필요한 요건을 제안하였다. 듣기 교육에서 내용이 되는 교재 구성과 내용 자체에 대한 평가에 비해 형식적 측면에 해당되는 음성에 대한 평가가 부족한 것이 현실이다. 이러한 상황에서 본 연구는 이후 제작될 듣기 자료에서 고려해야 할 요건을 설정했다는 데 의의가 있다. This study aims to survey listening materials for Korean learners and to suggest assessment guidelines of the listening materials. Listening materials comes from the supplements of 3 textbooks that is used in the Korean language education center. Pronunciation and speech rate is analyzed in order to suggest a proper guideline for listening materials. This work has significance in a way of setting up for the basic elements to be considered in terms of listening materials.
박미경(Park, Mikyoung) 인천대학교 인문학연구소 2012 인문학연구 Vol.18 No.-
This paper shows the results of a survey on the perception and viewpoints of Korean English-learning students on American culture and the result of reference research on the characteristics of American culture. Seventy Korean university students participated in the survey, which asks students their perception and view points on American culture. Editorials from major American press were used for reference research. Findings of this survey are: 1) Korean students widely perceive American culture relatively correctly in the systematic aspects as well as in the way of everyday life. 2) Korean students show comparatively poor recognition of American culture in some aspects: the social distance dramatized by American individualism, the aggressive defense culture, the social insecurity fueled by gun culture, and the non-interfering political culture. 3) Korean students view American culture neutrally or positively though they perceive the negative aspects of American culture. This study proves Korean students have unrealistic viewpoint on American culture with uncertain reasons.