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장성실,권윤형,배진순,노영만,한진구 韓國學校保健學會 2001 韓國學校保健學會誌 Vol.14 No.2
Objectives: We surveyed the prevalence of smoking among the adolescent population and analysed the correlation of the two exposure biomarkers-concentration of blood cadmium and urinary cotinine-to the smoking status. Methods: Subjects were 193 middle and high school students in Chungnam province. Blood cadmium and urinary cotinine were compared by sex and smoking status. Smoking status were classified by either the concentration of urinary cotinine or subjective answering as a smoker in the questionnaire. Results: Smoking prevalence was 24.6%, 36.2% and 6.7% among all subjects, male and female subjects, respectively. Average smoking amount was 17.5 and 1.5 cigarettes per month among the male subjects and female subjects, respectively Mean concentration of urinary cotinine among the male subjects was 135.57 ㎍/ℓ, and that of female subjects was 116.59 ㎍/. Direct smokers showed higher concentration of urinary cotinine than those of indirect smokers, and subjects with higher urinary concentration showed higher prevalence of smoking, too. Mean concentration of blood cadmium was 0.0572 ㎍/㎗ among the male subjects, and 0.0693 ㎍/㎗ among the female subjects. Among the male subjects, both exposure biumarkers showed significant correlation to the smoking status, but among the female subjects urinary cotinine did not show significant correlation to the smoking status. Conclusion: Concentrations of these two biomarkers suggested that this population had significantly high evironmental tobacco smoking(ETS) and efficient stop-smoking programs to reduce ETS should be directed to this population. Key words : environmental tobacco smoking, urinary cotinine, blood cadmium
Prenatal sonographic diagnosis of fetal thymic hyperplasia.
( Youn Sil Choo ),( Won Joon Seong ),( Seong Yeon Hong ) 대한산부인과학회 2012 대한산부인과학회 학술대회 Vol.98 No.-
Prenatal diagnosis of fetal thymic hyperplasia is extremely rare. There is wide variation in the appearance of the thymus on sonographic imgaing and it can often lead to erroneous suspicion of cardiomegaly or mediastinal mass. Here in, we report a case in which fetal thymic hyperplasia was diagnosed by fetal ultrasonography. A 31-year-old primi pregnant woman was referred to our hospital at 30 weeks of gestation because of abnormal pathway of superior vena cava with mediastial mass.The three vessel view of fetal sonogram revealed right lateral deviation of superior vena cava and about 5x3cm sized mass in the mediastium which showed homogeneous echogenecity, seemed to be thymic hyperplasia. It was combined with right MCDK. After term delivery, neonatal CT angiography confirmed thymic hyperplasia with abnormal great vessel pathway because of mass effect. The baby looked grossly healthy and had no respiratory distress after birth.
Prenatal diagnosis of congenital fetal scoliosis caused by uterine synechiae
( Youn Sil Choo ),( Jin Yeong Bae ),( Won Joon Seong ) 대한산부인과학회 2012 대한산부인과학회 학술대회 Vol.98 No.-
We report a case of fetal spinal deformity caused by uterine synechiae. The spine was flexed laterally at the cervicothoracic junction throughout fetal life. The gravida had a history of uterine synechiae. Non-enhanced MRI imaging revealed a distorted amniotic cavity appearing like a snowman, with the fetal spine curving sharply and represented a shoulder presentation Although, a radiograph acquired postpartum showed mild spinal flexion, the spine straightened after two months. There was not any serious morbidity during one year follow up of newborn. We advise caution following a careful evaluation before arriving at a decision of termination.
생식샘자극호르몬 분비호르몬 길항제를 이용한 난소자극 투여법에서의 경구복합피임제의 전처지: 비교 연구
추연실 ( Youn Sil Choo ),한애라 ( Ae Ra Han ),양승헌 ( Seung Heon Yang ),성나영 ( Na Young Sung ),차선화 ( Sun Hwa Cha ),김혜옥 ( Hye Ok Kim ),박찬우 ( Chan Woo Park ),송인옥 ( In Ok Song ),궁미경 ( Mi Kyoung Koong ),강인수 ( In S 대한산부인과학회 2011 Obstetrics & Gynecology Science Vol.54 No.10
목적 생식샘자극호르몬 분비호르몬 길항제를 이용한 난소자극 투여법에서 경구복합피임제의 전처치가 체외수정시술의 결과에 미치는 효과에 대해 평가해 보고자 하였다. 연구방법 2009년 9월 1일에서 2010년 2월 28일까지 본원 불임센터에서 체외수정시술을 위해 총 194회의 생식샘자극호르몬 분비호르몬 길항제 요법을 시행한 환자 중 경구복합피임제를 전처치한 경우와 그렇지 않은 경우의 체외수정 및 배아이식술의 진료 기록을 찾아 후향적으로 분석하였다. 결과 경구복합피임제 전처치군의 경우 사용된 생식샘자극호르몬의 사용량이 전처치하지 않은 군보다 많았다(3019.38±1379.00 vs. 2551.52 ± 1157.05 IU, P = 0.054). 난소 자극 시작부터 난소 채취를 위한 마지막 생식샘자극호르몬의 투여일까지 기간 또한 경구복합피임제 전처치 군(11.5 ± 2.0)에서 전처치하지 않은 않은 군(9.5 ± 1.9)에 비해 통계학적으로 의미 있게 길었다(P = 0.000). 배아 총 획득 갯수(2.8 ± 0.9 vs. 2.5 ± 1.0, P = 0.055) 및 난자수정률(77.2% vs. 65.5%, P = 0.017) 또한 경구복합피임제 전처치 군에서 처치 하지 않은 군에 비해 통계학적으로 의미 있게 높았다. 한편, 임신율에 있어서는 두 그룹 간에 통계학적으로 유의한 차이가 없었다(39.4% vs. 30.0%; P = 0.0304). 결론 체외수정시술을 위한 생식샘자극호르몬 분비호르몬 길항제 사용 시 경구복합피임제를 전처치 하였을 때, 그렇지 않은 군에 비해 최종적인 체외수정시술의 결과적인 측면에서 현저한 장점은 없는 것으로 보인다. 하지만 좀 더 명확한 결론을 도출하기 위해서는 더 많은 연구군을 포함한 전향적인 연구가 필요할 것으로 생각된다. Objective To evaluate whether oral contraceptive pill (OCP) pretreatments in gonadotropin-releasing hormone (GnRH) antagonist ovarian stimulation protocols takes positive effects on in vitro fertilization (IVF) outcomes in respect to retrieved oocyte number, oocyte maturation rate, fertilization rate, good quality embryo rate, cycle cancellation rate, pregnancy rate and clinical abortion rate. Methods A total of 194 cycles using GnRH antagonist protocol was performed at infertility clinic of our institute from September 1st, 2009 to February 28th, 2010. The medical records of GnRH antagonist protocols for IVF with or without OCP pretreatment in our IVF unit were retrospectively analyzed. We compared the IVF outcomes between OCP pretreated (n=41) and no pretreatment group (n=153). Results In cycles with OCP pretreated group, the total used dosage of gonadotropin (3019.38±1379.00 IU) were higher than that of no pretreatment group (2551.52 ± 1157.05 IU, P = 0.054). The duration of ovarian stimulation in OCP pretreated group (11.5 ± 2.0) was significantly longer than that of control group (9.5 ± 1.9, P = 0.000). The number of gained total embryo (2.8±0.9 vs. 2.5±1.0, P = 0.055) and fertilization rate (77.2% vs. 65.5%, P = 0.017) were significantly higher in OCP pretreated group. There is no significant difference in pregnancy rate between two groups (39.4% vs. 30.0%, P = 0.304). Conclusion OCP pretreatment before GnRH antagonist protocol for IVF appears not to have reliable benefit in terms of IVF outcomes. Wellcontrolled and large-scaled studies are needed.
COVID-19상황에서 간호대학생의 온라인 실습과 임상실습에 대한 임상수행능력과 임상실습만족도 비교
김연실(Youn Sil, Kim),박정애(Jung Ae, Park),이윤정(Yun Jeong, Lee) 한국간호연구학회 2021 한국간호연구학회지 Vol.5 No.4
Purpose : This comparative study aimed to assess clinical competence and clinical practice satisfaction for online and clinical practices of nursing students during the COVID-19 situation. Methods : As a descriptive survey research, this study was conducted targeting 157 third-year nursing students who are attending two universities from July to August 2021. Data were analyzed using descriptive statistics, independent t-test, analysis of variance and Scheffe’s test using the SPSS 24.0 program. Results : A significant difference was observed between students and online practice students in clinical competence(t=2.60, p=.010) and clinical practice satisfaction(t=3.21, p=.002). Conclusion : Based on the study results, a qualitative online practice education program should be developed to enhance clinical competence and satisfaction of nursing students in a situation where clinical practice is difficult because of COVID-19.
( Hyun Sil Park ),( Seok Goo Cho ),( Min Jung Park ),( So Youn Min ),( Hong Seok Chang ),( Hee Je Kim ),( Seok Lee ),( Chang Ki Min ),( Jong Wook Lee ),( Woo Sung Min ),( Chun Choo Kim ),( Ho Youn Kim 대한내과학회 2009 The Korean Journal of Internal Medicine Vol.24 No.3
Background/Aims: The bone marrow functions not only as the primary B-lymphocyte-producing organ but also as a secondary lymphoid organ for CD4 and CD8 cell responses and a site of preferential homing and persistence for memory T cells. Bone marrow T (BM-T) cells are distinguished from peripheral blood T cells by surface phenotype, cytokine secretion profile, and immune functions. In this study, we evaluated the alloreactive potential of donor lymphocyte infusion (DLI) using BM-T cells in mixed chimerism compared to that using spleen T (SP-T) cells. Methods: Cells were prepared using established procedures. BM-T cells were obtained as a by-product of T-cell depletion in BM grafting and then cryopreserved for subsequent DLI. We performed DLI using BM-T cells in allogeneic mixed chimera mice on post-BMT day 21. Results: When the same dose of T cells, 5-10×105 (Thy1.2+), fractionated from BM and spleen were administered into mixed chimeras, the BM-T group showed complete chimeric conversion, with self-limited graftversus-host disease (GVHD) and no pathological changes. However, the SP-T group showed persistent mixed chimerism, with pathological signs of GVHD in the liver and intestine. Conclusions: Our results suggest that DLI using BM-T cells, even in small numbers, is more potent at inducing chimeric conversion in mixed chimerism than DLI using SP-T cells. Further study is needed to determine whether cryopreserved BM-T cells are an effective cell source for DLI to consolidate donor-dominant chimerism in clinical practice without concerns about GVHD. (Korean J Intern Med 2009;24:252-262)