http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Atrial Fibrillation in Patients with Permanent VVI Pacemakers: Risk Factors for Atrial Fibrillation
( Jeong Gwan Cho ),( Yang Ho Jeong ),( In Jong Cho ),( Young Geun Ahn ),( Kwang Soo Cha ),( Jeong Pyeong Seo ),( Joo Hyung Park ),( Myung Ho Jeong ),( Jong Chun Park ),( Jung Chaee Kang ) 대한내과학회 1997 The Korean Journal of Internal Medicine Vol.12 No.1
관동맥질환의 진단에 있어서 Exercise Treadmill Score 의 의의
서정평(Jeong Pyeong Seo),조인종(In Jong Cho),류문희(Mun Hee Rheu),박종수(Jong Soo Park),이명곤(Myung Kon Lee),정명호(Myung Ho Jeong),조정관(Jeong Gwan Cho),박종춘(Jong Chun Park),강정채(Jung Chaee Kang) 대한내과학회 1997 대한내과학회지 Vol.52 No.3
Objectives: The treadmill exercise eletrocardiography(ECG) is the most commonly used non- invasive method in the evaluation of patients with chest pain. But the accuracy of treadmill exercise ECG in detecting the coronary artery disease(CAD) is still controversial. To improve the accuracy of the treadmill exercise test, exercise treadmill score(ETS) based on exercise duration, degree of ST deviation, and treadmill anginal index during treadmill exercise ECG has been used. Methods: The authors calculated ETS by simple equation(total exercise duration-5×maximal ST- segment deviation during or after exercise-4×treadmill angina index) and analyzed coronary angiograms of 173 patients(mean age '55.5±8.7, male: female=2.7: 1) who underwent treadmill exercise ECG and coronary angiography in Chonnam University Hospital from January, 1990 through March, 1993. Results. 1) The studied subjects were subdivided into 3groups according to ETS. Group A(high risk, ETS≤11) were composed of 15cases(mean age 60.2±7.4, male: female = 1.2: 1), group B(moderate risk, 5>ETS≥11) 71cases(mean age 60.2±7.4, male: female=3.3:1), group C(low risk, ETS>5) 87cases(mean age 54.8±9.2, male-female =2.5:1). Clinical diagnoses of the studiedsubjects were 63stable angina, 61unstable angina, 3acute myocardial infarction, and 46 old myocardial infarction. On coronary angiographic findings, 61patients had single vessel disesase, 23patients had two vessel disease and 13patients had three vessel disease. 2) The sensitivity of the treadmill exercise ECG in diagnosing coronary artery disease was 88% and the specificity was 46%. 3) One hundred percent of group A patients had CAD and 54% of them had multivessel disease, 75% of group B had CAD and 27% of them had multivessel disease, and 33% of group C had CAD and 10% of them had multivessel disease. 4) There were no significant differences in the siite of stenotic lesion and degree of stenosis according to ETS in the patients with single vessel disease. 5) There were no significant differences in left ventricular ejection fraction and left ventricular end-diastolic pressure among three groups. Conclusion: Exercise treadmill score is useful in predicting the presence and severity of CAD and that low ETS less than -11 may be an indicator of multivessel coronary disease.
서경아 ( Seo Gyeong A ),김민정 ( Kim Min Jeong ),이귀세라 ( Lee Gwi Se La ),신종철 ( Sin Jong Cheol ),김수평 ( Kim Su Pyeong ),나종구 ( Na Jong Gu ),김사진 ( Kim Sa Jin ) 대한산부인과학회 2004 Obstetrics & Gynecology Science Vol.47 No.1
Objective : This study was conducted to investigate the presence and pattern of Hyrtl anastomosis, and to examine the effect that each type has on obstetrical outcome. Methods : This study was carried out from January of 2001 to May of 2003 on 904 randoml
Lee, Pyeong-Koo,Yu, Soonyoung,Jeong, Youn-Joong,Seo, Jieun,Choi, Seon–,Gyu,Yoon, Byung-Yong Elsevier 2019 CHEMOSPHERE - Vol.217 No.-
<P><B>Abstract</B></P> <P>Arsenic sources were identified in As-contaminated soils 4 km–7 km from a closed Cu smelter. Host rocks, heavy minerals in contaminated soils, ore minerals in quartz veins (geogenic sources) and bottom ash from the Cu smelter (an anthropogenic source) were investigated as potential sources. As a result, heavy minerals and bottom ash were found to contain higher As concentrations than the contaminated soils. Some of the host rock samples also showed higher As levels than the contaminated soils. Arsenopyrite was one of the frequently detected ore minerals in quartz veins. The As concentrations in soils did not decrease with soil depth or distance from the smelter. These results imply that the atmospheric emission from the smelter was not a major arsenic source. Based on the geochemical investigation and Pb isotopic analysis, the As contamination was affected by both regional ore mineralization and the host rock, and the influence of the smelter was limited. The spatial analysis of As concentrations and Pb isotopic ratios suggested that As contamination was mainly due to regional ore mineralization. The <SUP>206</SUP>Pb/<SUP>207</SUP>Pb and <SUP>206</SUP>Pb/<SUP>204</SUP>Pb ratios of the contaminated soils were plotted on the mixing line between background soils and ore minerals. The source apportionment results indicated a significant contribution of regional ore mineralization (average 52.9 ± 30.3%) to the As contamination. The contribution of this study is that we identified that the major source of soil contamination was of geologic origin despite an anthropogenic source nearby using geochemical and Pb isotopic investigation.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Arsenic sources with distinct Pb isotopic signatures were found. </LI> <LI> Geogenic sources were more influential to As levels than an anthropogenic source. </LI> <LI> Ore-bearing particles from unmined regional mineralization were a major As source. </LI> <LI> Geochemical and Pb isotope maps helped to identify hotspots and assess As sources. </LI> </UL> </P>
방실결절회귀성 빈맥의 유발에 관여하는 심전기생리학적 인자에 관한 연구
조정관(Jeong Gwan Cho),신순철(Soon Chul Shin),류제영(Jay Young Rhew),배열(Youl Bae),김준우(Jun Woo Kim),김성희(Sung Hee Kim),김주한(Ju Han Kim),서정평(Jeong Pyeong Seo),박종철(Jong Chul Park),차광수(Gwang Su Cha),박주형,정명호(Myung Ho 대한내과학회 1997 대한내과학회지 Vol.52 No.6
Objectives: Although a subtle balance between conduction time of the antgrade slow pathway and refractory period of the retrograde fast pathway is known to play the most critical role in the induction of AV nodal reentrant tachycardia(AVNRT), other electrophysiologic factors such as concealed conduction in to the fast pathway have been suggested to be responsible. The present study was performed to determine the electrophysiologic factors responsible for the induction of AVNRT. Methods: Total 34 subjects undergoing electrophysiologic study(EPS) including 9 normal subjects(SAVNP), 7 subjects with dual AV nodal pathways(DAVNP) but no inducible AVNBT, and 18 inducible AVNRT patients were included in this study. EPS was performed using the conventional technique. To evaluate the presence of concealed conduction into the fast AV nodal pathway(FP) and its effects on the effective refractory period(ERP) of the FP (FP-ERP) to a subsequent impulse, single(A2) and double atrial extrastimuli(A2A3) were given. FP-ERP of conducted A2 [FP-ERP-A2(+)] was measured with a second atrial extrastimulus(A3) following a first atrial extrastimulus(A2), which was delivered at a coupling interval 20-30ms longer than FP-ERP. ERPs of non-conducted A2 [FP-ERP-A(-)] was measured with A3 following A2 at coupling intervals 20 ms shorter than FP-ERP. Concealed conduction was considered to be present when A1A3 interval of A3 blocked at the FP with a longest A2A3 interval was longer than FP-ERP. Concealment index(CI)-1 and CI-2 were calculated by dividing FP-ERP-A2(-) by FP-ERP-A2(+) and FP-ERP, respectively. In addition, relationship between antegrade slow pathway conduction time(A2H2) and retrograde fast pathway conduction time(HA), retrograde AV conduction system block cycle length(VA-BCL), and retrograde AV conduction system EBP(VA-ERP) was evaluated by a regression analysis. Results: Concealed conduction was present in all the subjects. CI-1 was 0.63±0.04 and CI-2, 0.79±0.04 in SAVNP and 0.67±0.11, 0.68±0.07 respectively, in AVNRT patients in whom the antegrade slow pathway(SP) was ablated with catheter ablation, showing no significant difference in CI between 2 groups. At the time of induction of AVNRT with A2, A2H2. was significantly correlated with FP-ERP and FP-CT(r=OA43, p=0.04; r=0.507, p=0,02, respectively). By multivariate regression analysis, it was derived that A2H2 should be greater than 0.79 FP-ERP+1.57 FP-CT-0.44 HA-190(ms) (r=0.71, p< 0.05). Conclusion: Induction of typical AVNRT with A2 is determined by conduction time of the slow pathway, refractory period and conduction velocity of the fast pathway, and concealed conduction into the fast pathway.
Rim, Hwa Pyeong,Min, Kyung Hyun,Lee, Hong Jae,Jeong, Seo Young,Lee, Sang Cheon WILEY‐VCH Verlag 2011 Angewandte Chemie Vol.123 No.38
<P><B>Die Hüllen fallen gelassen</B>: Ein pH‐responsives, mesoporöses Siliciumoxid‐Nanopartikel mit einer Hülle aus porenblockierendem Calciumphosphat (CaP) wurde durch enzymvermittelte Oberflächenmineralisation unter milden Bedingungen hergestellt. Wird das Partikel zellulären lysosomalen pH‐Werten ausgesetzt, löst sich der CaP‐Porenblocker auf, und ein in den Poren eingelagerter Antitumorwirkstoff kann freigesetzt werden (siehe Bild; HAp=Hydroxyapatit).</P>