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만삭전 조기양막파수 산모에서 양수내 백혈구수 측정의 진단 및 예후적 가치
윤보현(Bo Hyun Yoon),김미하(Mi Ha Kim) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.1
Objective : The aim of this study was 1) to determine the diagnostic performance of amniotic fluid white blood cell (WBC) count for the antenatal detection of intrauterine infection and 2) to identify the value in prediction of preterm birth and significant neonatal morbidity in patients with preterm premature rupture of membranes. Methods : Transabdominal amniocentesis was done in 255 singleton pregnancies with preterm premature rupture of membranes before 36 weeks of gestational age. Amniotic fluid was cultured for aerobic and anaerobic bacteria and mycoplasmas. Receiver-operator characteristic curve, survival analysis and logistic regression were used for statistical analysis. Results : 1) Prevalence of positive amniotic fluid culture was 19.6% (50/255). Amniotic fluid WBC count was higher in the patients with positive amniotic fluid culture than those with negative amniotic fluid culture (median 269 [0-19764] cells/mm3 vs median 2 [0-7956] cells/mm3, p<0.001). 2) As a diagnostic and prognostic means, the increased amniotic fluid WBC (≥20 cells/mm3) had sensitivity of 74%, specificity of 74%, positive predictive value of 41% and negative predictive value of 92% for the positive result of amniotic fluid culture. 3) An increased amiotic fluid WBC was strongly associated with shorter amniocentesis-to-delivery interval even after adjustment of gestational age at amniocentesis(hazard ratio 3.2736, p<0.0001). 4) Amniotic fluid WBC count was higher in patients with significant neonatal morbidity or congenital neonatal infectious morbidity than those without these (p<0.001 and p<0.005 respectively). 5) Patients with increased amniotic fluid WBC count had higher incidence of significant neonatal morbidity and congenital neonatal infectious morbidity than those with low amniotic fluid WBC count and the association between amniotic fluid WBC and significant neonatal morbidity was statistically significant after adjustment of gestational age at amniocentesis (OR 3.3649, p<0.0001). Conclusion : Amniotic fluid WBC count is of value in antenatal diagnosis of intrauterine infection and prediction of maternal and neonatal outcomes in patients with preterm premature rupture of membranes.
모바일 단말을 이용한 인터렉티브 미디어 시스템 설계 및 구현
류은석 ( Eun-seok Ryu ),김미하 ( Mi-ha Kim ),유혁 ( Hyuck Yoo ) 한국정보처리학회 2004 한국정보처리학회 학술대회논문집 Vol.11 No.1
최근 들어 핸드폰이나 PDA 등 휴대용 단말기의 보급이 급격히 늘면서 이를 통한 미디어 감상의 수요는 많이 증가하였다. 또한, 멀티미디어 기술의 발전 방향도 기존의 단방향 서비스를 벗어나 사용자의 기호에 따라 스토리를 전개해나가는 인터렉티브 미디어에 이르렀다. 따라서, 본 연구에서는 본 연구팀이 기존에 진행했던 연구에 이어서 이러한 인터렉티브 미디어를 지원하기 위한 전체 시스템을 설계하였고 이를 PDA 상에 구현하였다. 이 때 비디오 코덱으로는 JVT(H.264)를 사용하였으며 컨텐츠 제작을 위한 마크업 언어는 자체 정의한 IML(Interactive Media Language)를 사용하였다. 또한, 본 논문에서는 이러한 구현 과정에서 이동 단말기 들이 공통적으로 가지는 취약점인 CPU, 메모리 등의 한계를 극복하기 위한 방안도 살펴보았다.
윤보현(Bo Hyun Yoon),김미하(Mi Ha Kim),신희철(Hee Chul Syn),문정빈(Jeong Bin Moon),전종관(Jong Kwan Jun),오수영(Soo Young Oh),박중신(Joong Shin Park),김석현(Seok Hyun Kim),이택상(Taek Sang Lee),정진욱(Jin Wook Chung),박재형(Jae Hyung 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.7
Objective : To investigate whether emergency selective arterial embolization may serve as a safe and effective alternative treatment in the management of intractable pregnancy-associated hemorrhage. Methods : Between February 1992 and March 1999, 20 patients at Seoul National University Hospital underwent angiographic embolization to control obstetrical hemorrhage. In all cases, hemostatic embolization was performed because of intractable hemorrhage unresponsive to conservative management. All available hospital records were reviewed and detailed to collect adequate clinical data such as specific leading complication, clinical status, estimated blood loss and blood replacement requirements, length of procedure, used emboli, complications associated with the procedure, and its results. Results : We have experienced the successful embolization in 18 of 20 patients of pregnancy-related hemorrhage from the different causes. One of these successful cases required two embolization attempts. Two of these patients needed surgical treatment because of rebleeding after the embolization. The mean length of the time for the procedure was 96.4±50.1 minutes (range; 50-260 min.). The average length of hospitalization was 10.4±7.7 days (range; 1-36 days). No major complication related to the embolization was found. Two women became pregnant after embolization. Conclusion : This study indicates that angiographic embolization is a safe and effective method for the control of pregnancy-related hemorrhagic complications unresponsive to conservative management and that it allows maintenance of reproductive ability.
한국인 산모에서 임신중기 양수내 alpha-fetoprotein치의 정상 범위
윤보현(Bo Hyun Yoon),김미하(Mi Ha Kim),신희철(Hee Chul Syn),문정빈(Jeong Bin Moon),전종관(Jong Kwan Jun),임준희(June Hee Lim),오수영(Soo Young Oh),이용희(Yong Hee Lee),박중신(Joong Shin Park) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.6
Objective: Our purpose was to determine normal amniotic fluid α-fetoprotein level in midtrimester Korean pregnant women whose neonatal outcomes were normal. Methods: Amniotic fluid α-fetoprotein(AFAFP) levels were measured by specific radioimmunoassay (RIA) in midtrimester pregnant women for various indications of amniocentesis from May 1992 to July 1999 at Seoul National University Hospital. Normal ranges were obtained from 640 singleton pregnancies in which neonatal outcomes were normal.Results: Median values of AFAFP in Korean pregnant women were 13,250ng/mL, 12,900ng/mL, 11,150ng/mL, 9,430ng/mL, 8,019ng/mL, 6,800ng/mL, 5,850ng/mL, 5,750ng/mL, 5,210ng/mL, 3,420ng/mL at 15 week, 16 week, 17 week, 18 week, 19 week, 20 week, 21 week, 22 week, 23 week, 24 week, respectively.Conclusion: This determination of the median values and the normal range of AFAFP level by each gestational week in uncomplicated Korean women could be used reference values for prenatal diagnosis of various disorders like open neural tube defect.