제대 정맥 기형에 의한 비면역성 태아수종 1례

윤나라 ( Na Ra Yun ),김지수 ( Ji Soo Kim ),이주영 ( Ju Young Lee ),신승한 ( Seung Han Shin ),고정민 ( Jung Min Ko ),김이경 ( Ee Kyung Kim ),김한석 ( Han Suk Kim ),최중환 ( Jung Hwan Choi ) 대한주산의학회 2013 Perinatology Vol.24 No.4

Anomalies of the fetal venous system are rare. Major portion of fetal venous anomalies are malformation of umbilical vein and ductus venosus. Abnormal umbilico-systemic shunt, bypassing the ductus venosus makes direct connection between the high-pressure umbilical system and the low-pressure systemic system. And it makes adverse to the fetal hemodynamics. Fetal hemodynamic distress may induce fetal growth retardation, hepatomegaly, cardiomegaly, hydrops fetalis and fetal death. We report a case of non-immune hydrops fetalis which was associated with abnormal umbilical vein pathway. Our patient had bifurcated umbilical veins. Main branch of umbilical vein was drained directly to the left internal iliac vein and another branch was drained to the portal vein. After birth, extra hepatic shunt through main branch of umbilical vein that bypassed the portal system was persisted and thrombocytopenia was combined due to consumption in thrombus of a dilated anomalous umbilical vein. Later this case was diagnosed as Noonan syndrome with a genetic testing.

의학강좌 - 개원의를 위한 모범처방 : 중환자실에서 발생하는 발열에 대한 평가

윤나라 ( Na Ra Yun ) 대한내과학회 2015 대한내과학회지 Vol.88 No.6

Fever is a common and serious problem in patients in the intensive care unit (ICU), but its cause is sometimes difficult to determine. Such fevers may be infectious or noninfectious. Infectious causes include ventilator-associated pneumonia, intravascular catheter-related infection, surgical site infection, catheter-related urinary tract infection, and Clostridium difficile infection. Noninfectious causes include transfusion reaction, drug fever, acute pancreatitis, deep vein thrombosis, pulmonary embolism, adrenal insufficiency, and hyperthyroidism. The medical history should be reviewed carefully and a physical examination performed whenever fever occurs in patients in the ICU. (Korean J Med 2015;88:658-662)

임상 ; 초극소 저체중 출생아의 신생아중환자실 입원 기간 중금식의 원인 분석과 금식 기간에 따른 임상 결과의 비교

윤나라 ( Na Ra Yun ),박지연 ( Ji Youn Park ),신승한 ( Seung Han Shin ),이주영 ( Ju Young Lee ),김이경 ( Ee Kyung Kim ),김한석 ( Han Suk Kim ),최중환 ( Jung Hwan Choi ) 대한주산의학회 2013 Perinatology Vol.24 No.4

목적: 초극소저체중 출생아의 진료에서 금식은 치료 목적으로 사용되고 있으나 금식 자체가 장기적인 예후에 영향을 미칠 수 있는 반면, 그 목적이 불분명하거나 불필요한 경우가 있어 신생아중환자실 입원 기간 중 금식 원인을 분석하고 금식기간에 따른 임상 결과를 비교하고자 하였다. 방법: 2009년 1월 1일부터 2011년 12월 31일까지 서울대학교병원 신생아중환자실에 입원한 초극소 저체중 출생아 92명의 기록지를 후향적으로 분석하였다. 완전 장관영양 도달 전의 금식 기간과 원인을 조사하였으며 수술과 연관된 금식은 제외하였다. 완전장관 영양 도달시기, 총정맥영양 기간, 입원기간, 패혈증, 괴사성장염, 담즙정체증, 골감소증 등을 금식기간에 따라 비교하였고, 초기 영양 평가를 위해 생후 1주일간 투여한 칼로리 양과 단백질 양을 합산하였다. 출생시, PMA 35주와 교정연령 8개월의 몸무게, 키, 머리둘레의 표준편차인 Z-score 를 조사하였고 교정연령 8개월의 한국형ASQ 발달선별검사(Korean Ages & stages Questionnaires, K-ASQ)를 조사하였다. 결과: 92명의 환자에서 완전장관영양 도달 전 총 163회 금식을 하였고 총 금식기간은 평균 6.7 (±5.6)일이었고 평균1.8회의 금식을 하였다. 금식의 원인으로 동맥관개존증의 치료 약물 투여가 47.5% (77회)로 가장 많았고 수유곤란증이25.3% (41회)이었다. 금식 기간을 7일 이하인 그룹과 금식 8일 이상인 그룹으로 나눠 비교하였을 때, 금식 기간이 길수록 완전장관영양 도달시기, 재원 일이 길었다. 패혈증, 기관지폐이형성 증, 담즙정체 증, 골 감소증의 발생 빈도는 두 그룹간 차이는 없었으며 괴사성장염은 금식 8일 이상 그룹에서 많았다. 금식 기간이 길수록 출생 시와 비교하여 PMA 35주에 키의 Z score가 더 많이 감소 하였으며(P=0.049) 교정연령 8개월에 몸무게 Z score 회복이 잘 되지 않았고(P=0.040) 키Z score 증가 폭이 더 적었다(P=0.07). K-ASQ 검사에서 금식 8일 이상 그룹에서 발달저하가 의심 빈도가 많았다. 결론 : 금식이 장기적인 성장 및 발달에 영향을 줄 가능성이 있으며, 동맥관 개존증 치료약물 투여 기간 동안에도 소량의 장관 영양을 유지하고 수유곤란 증을 조절 함으로써 금식기간을 최소화하려는 노력이 필요하다. Purpose: To evaluate the causes of nil per os (NPO) before reaching full enteral feeding and compare the clinical outcomes of extremely low birth weight infant (ELBWI) by NPO duration. Methods: We retrospectively reviewed the medical records of 92 ELBWI who were born and admitted to Neonatal intensive care unit (NICU) of Seoul National University Children`s Hospital from January 2009to December 2011. We analyzed the perinatal factors and causes of NPO. To compare neurodevelopment aloutcomes and growth, we used K-ASQ (Korean ages & stages questionnaires) and growth Z-score. Results: There were total 163 fasting episodes before reaching full enteral feeding. Mean NPO time was 6.7±5.6 days and mean frequency of NPO was 1.8 episodes. Most common cause of NPO was the medication for patent ductus arteriosus (PDA) closure (47.5%) and the next was the feeding intolerance (25.3%). Longer NPO group (more than 7 days) showed longer time to full enteral feeding and hospital day. Incidence of necrotizing genterocolitis was significantly higher in the longer NPO group. But there was no difference between two groupsin the incidence of sepsis, cholestasis, and osteopenia. Changes in height Z-score from birth to postmenstrual age 35 weeks were significantly higher in the longer NPO group. In longer NPO group, catch-up of weight Z-score at CA 8 months was poor. And number of patients with score under cutoff level in K-ASQ was higher. Conclusion: NPO duration seems to be related with long term growth and neurodevelopment. Effort to minimize fasting time is needed by keeping enteral feeding during PDA medication and active management for feeding intolerance.

장이모우 영화에서 나타나는 공간의 상징성에 관한 연구

윤나라(Yun, Na-Ra),심은주(Shim, Eun-Ju) 한국실내디자인학회 2007 한국실내디자인학회 학술대회논문집 Vol.9 No.3

브랜드 스캔들의 유형과 소비자의 사고체계에 따른 스캔들 유출효과의 차이가 기업과 경쟁사에 미치는 영향

윤나라(Na Ra Youn),이윤경(Yun Lee),이철성(Chul Sung Lee) 한국경영학회 2013 經營學硏究 Vol.42 No.4

Product-harm crises, or brand scandals, significantly decrease consumer preferences and purchases for the scandalized brands and their families as well as their competing brands. Given the devastating effects of product-harm crises and the increasing number of product recalls recently, research has demonstrated that consumers engaged in different systems of thought are more or less susceptible to negative brand publicity (Monga and John 2008). Extending prior work, we investigate how the specific content of a brand scandal moderates the effect that thinking style has on the scandal`s spillover. We propose that whether the nature of the brand scandal is extrinsic or intrinsic to the product`s performance and quality determines the degree to which analytic and holistic thinkers get affected by the negative information. Extrinsic content is a case where the issues pertinent to a brand scandal are more social and values-related in nature, whereas in the case of intrinsic content, the issues are primarily related to product defects. We argue that whether the contents of negative brand publicity are intrinsic or extrinsic to the product itself determines the degree to which individuals process the negative information as a focal point versus a context and that this relative difference in attention subsequently affects the type of judgment bias they make. Holistic thinkers tend to focus more on relationships among objects and events and analytic thinkers attend more to a discrete focal point away from its context (Nisbett et al. 2001). These distinct differences between holistic versus analytic Thinking Styles lead us to predict that when negative publicity is directly associated with issues intrinsic to the product itself (for example, poor product quality or risks of injury threatening consumer safety), the focal components of negative publicity become more salient, and thus analytic thinkers might make more biased judgments for the scandalized brand than holistic thinkers might. Monga and John(2008) confirmed this argument by showing that when participants were presented with negative publicity about a new car with manufacturing problems, analytic thinkers were prone to more biases than holistic thinkers. We argue that if the brand scandal`s content is extrinsic, it should lead to the opposite results. When negative publicity is not directly associated with the product itself, but related with issues extrinsic to the product (for example, manufacturing process causing a water pollution or recent Tiger Woods` multiple mistress scandal linked with brands using him in their ads), consumers would attend more to the contexts of the brand scandals than the focal points of the scandalized brand itself, thus it leads to more biased judgments of holistic thinkers. We begin our hypothesis testing by demonstrating the effects of holistic versus analytic Thinking Styles on brand scandal spillover in a fictitious situation where a brand scandal is extrinsic to the brand itself (Study 1a). Next, we investigate the moderating role of thinking modes on the effects of scandal spillover involved with the negative publicity intrinsic (Study 1b) to the brand. Finally, we consider the content of the scandal as a factor and test the effect of the interaction between the content of the scandal and consumers` thinking style on scandal spillover (Study 2) Across the two lab experiments, we demonstrate that holistic thinkers are more susceptible to brand scandal spillover when the nature of the brand scandal is extrinsic to the scandalized brand, whereas analytic thinkers become more susceptible when it is intrinsic. In Study 3, we confirmed the effect of thinking style moderated by the content of brand scandal on scandal spillover using stock prices of the scandalized brands. We collected intrinsic and extrinsic brand scandal news in Korea, Japan, and the United States and investigated the stock price changes before and after the brand scandals. The event

50인 미만 노인복지시설의 급식 현황 및 급식업무 종사자들의 위생지식 및 실천도 평가

서선희 ( Sun Hee Seo ),윤나라 ( Na Ra Yun ) 대한영양사협회 2011 대한영양사협회 학술지 Vol.17 No.3

This study examined the current status of foodservice management in elderly welfare facilities and evaluated food service workers` food safety practices and knowledge. For this, the directors of 20 elderly welfare facilities (each with fewer than 50 residents) located in Seoul were interviewed and a survey of 40 foodservice workers was conducted to determine their food safety knowledge and practices. The facilities accommodated an average of 28 residents. All the facilities were self-operated and approximately 62% were dependent on payments by residents. Only 15% had a dietitian in charge of menu planning, food purchasing, and food safety management. Approximately 50% had their facility managers take responsibilities for menu planning and food safety management. Most of the facilities provided food safety training within their own facility and sanitized their utensils, cutting boards, and dishcloths on a daily basis. A limited number of foodservice workers, insufficient training programs, and budget constraints were some of the major barriers to food safety management. Their average score on food safety practices was 1.62, and that on food safety knowledge was 17.6 out of 19 points. These results indicate that the foodservice workers had good food safety knowledge and appropriate food safety practices. There was a significant correlation only between food safety practices related to receiving and storing food products and knowledge of personal hygiene.

바랙터 다이오드를 이용한 X-밴드 전압제어 발진기

박동국(Dong-Kook Park),윤나라(Na-Ra Yun),최연지(Yean-Ji Choi),김예지(Yea-Ji Kim) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회지 Vol.33 No.5

지하 매설물 원격 관리를 위한 2.4 GHz 대역의 인쇄형 야기 안테나

박동국,조익현,서홍은,윤나라,김진영,Park, Dong-Kook,Cho, Ik-Hyun,Seo, Hong-Eun,Yun, Na-Ra,Kim, Jin-Young 한국전자파학회 2008 한국전자파학회논문지 Vol.19 No.12

본 논문에서 지하 매설물의 원격 관리에 적용이 가능한 2.45 GHz의 지표면 매입형 인쇄형 야기 안테나를 제안하였다. 안테나의 방수 및 견고성을 위해 백크라이트로 안테나를 감싸는 구조로 제작하였다. 제작된 안테나는 $2.15{\sim}2.52\;GHz$ 대역에서 이득 10 dBi로 동작하며, 시뮬레이션 결과와 유사한 결과를 나타내었다. 개발된 안테나는 지하 매설물 원격 관리를 위해 활용이 될 것으로 기대된다. This paper proposes a printed yagi-antenna available at 2.45 GHz, for the remote-management system of the underground equipment. To improve the solidity and waterproof property, the proposed antenna is coated with bakelite. The manufactured antenna is operated at $2.15{\sim}2.52\;GHz$, whose gain measures 10 dBi. These results are a little different from those of the simulated antenna, but the trend is totally similar. Developed antenna is expected to be useful in the underground facility.

지하 매설물 원격 관리를 위한 지표면 매입형 안테나

박동국(Dong-Kook Park),조익현(Ik-Hyun Cho),서홍은(Hong-Eun Seo),윤나라(Na-Ra Yun),홍재섭(Che-Sup Hong) 한국전자파학회 2007 한국전자파학회논문지 Vol.18 No.10

본 논문에서 PCS 및 cellular 망을 이용한 지하 매설물의 원격 관리에 적용이 가능한 지표면 매입형 안테나를 제안하였다. 지표면 매입형 안테나는 원형 패치 안테나를 이용하여 2중 공진이 생기도록 하여, 맨홀 뚜껑과 같은 금속에 삽입하고, 안테나 보호를 위해 몰딩 처리를 하여 제작하였다. 금속체 속에 삽입 및 몰딩으로 인해 안테나의 공진 주파수가 변화하게 되는데, 이것을 고려하여 안테나를 설계하였다. 제작된 안테나의 반사 손실 및 다이폴 안테나와의 상대적인 수신 전력 비교 측정을 통해 제안된 안테나가 PCS 및 cellular 망을 이용한 지하매설물의 원격 관리에 적용이 가능함을 확인하였다. In this paper, two novel subsurface antennas for remote management of underground facilities using PCS and cellular wireless network are proposed. The proposed subsurface antenna is a dual band circular patch which is inserted and molded for the protection of the antenna into a metal such as a manhole cover. The antenna is designed considering the resonant frequency shift of the antenna due to the insertion and molding. The measured return loss and receiving power of the fabricated antenna comparison with a dipole shows that two proposed subsurface antenna can be used for remote management of underground facilities using PCS and cellular systems.

ADHD 치료를 위한 아이트래킹 게임 기반 집중력과 기억력 향상 연구

최은선 ( Eun-sun Choi ),최다빈 ( Da-vin Choi ),윤나라 ( Na-ra Yun ),유다연 ( Da-yeon Yoo ),박지수 ( Jisu Park ) 한국정보처리학회 2023 한국정보처리학회 학술대회논문집 Vol.30 No.2

이 연구는 ADHD 환자를 대상으로 디지털 치료 게임을 개발하였으며, 환자의 주의력과 기억력을 향상시키도록 구성되었다. 게임은 눈 움직임과 ADHD 의 연관성을 고려하여 아이트래킹 기술을 활용하여 개발되었다. 이를 통해 ADHD 환자를 위한 맞춤형 디지털 치료 게임의 중요성을 강조한다.