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관동맥 확장술 후 추적 운동부하 검사에서 관찰되는 QT 분산의 변화
이왕수(Wang Soo Lee),김상욱(Sang Wook Kim),안지현(Ji Hyun Ahn),이상엽(Sang Yub Lee),송영빈(Young Bien Song),김상민(Sang Min Kim),조성원(Sung Weon Jo),이광제(Kwang Je Lee),곽미향(Mi Hyang Kwak),김태호(Tae Ho Kim),김치정(Chee Jeong Kim 대한내과학회 2002 대한내과학회지 Vol.63 No.2
Background: QT dispersion (QTd) represents inhomogeneous ventricular repolarization. Increased QTd has been reported to be associated with ischemic heart disease and sudden cardiac death. Successful percutaneous coronary angioplasty (PTCA) produces a favorable recovery of inhomogenous repolarization and reduces QTd. Although treadmill exercise test is commonly used for follow-up test after PTCA, limited data are available about QTd during treadmill test. The purpose of this study was to evaluate the change in QTd and determine its clinical role in follow-up treadmill exercise test after coronary stenting. Methods: 41 patients with significant coronary artery disease underwent successful coronary stenting, while 46 patients were medically treated. Treadmill exercise test was performed to compare QTd between two groups as a follow-up test at 6 months after coronary stenting and medical therapy. Treadmill exercise test was recorded in pre-test, peak exercise, and recovery 2 minutes phase. QTd and corrected QT dispersion (QTcd) were measured in these ECGs using a digitizer. Results: Coronary stenting significantly reduced QTd and QTcd at 6 months after coronary stenting. QTd and QTcd did not show significant difference between coronary stenting and medical therapy group at initial EKG before treatment. After coronary stenting, QTd and QTcd were significantly reduced than those of medical therapy group. And the changes in QTd and QTcd were more marked at peak exercise (28.2±11.9 and 39.3±16.2 msec in coronary stenting group vs 40.4±20.5 and 57.8±30.0 msec in medical therapy group). Lesion location and diseased vessel number were not associated with changes in QTd and QTcd. Conclusion: Coronary stenting reduced QTd and QTcd significantly in follow-up treadmill exercise test. Coronary stenting appears to be more effective to relieve myocardial ischemia and to improve inhomogenous ventricular repolarization than medical therapy. The measurement of QTcd during treadmill exercise test may be a useful index to evaluate myocardial ischemia after coronary stenting. Clinical relevance of these finding will require further study. (Korean J Med 63:186-194, 2002)
친환경 건축물 예비인증 작업 사례 분석을 통한 설계공정 효율성 고찰
이왕수(Lee Wang-Soo),남현진(Nam Hyun-Jin),김재민(Jaemin Kim) 한국건축친환경설비학회 2008 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
As the green building certification system is notified and enforced. additional resources (e.g. lime. cost , man hours) for the implementation are required. To get the green building certification system adopted in design process successfully. it is important to minimize the additional load on the design team and increase the efficiency of the certification process. this paper presents outcomes of analysis on the basis of observations through preliminary certification cases. To improve the efficiency of design process for the certification, stakeholders (e.g. design team, construction team) should make effective communication from the beginning of design process. It is extpected that automatic data sharing system such as building information modelling(BIM) could contribute to reducing working hours of the certification process.
이왕수(Lee Wang-Soo),박은미(Park Eun-Mi),김동호(Kim Dong-Ho),곽노열(Kwak Ro-Yeul),김재민(Kim Jae-Min) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
Innovative approaches should be considered to meet new requirements associated with engineering education certificate program. Computer simulation is a powerful tool which allows building designers to identify design parameters favourable to sustainable buildings. Aiming at setting up an effective training program, a computer-aid sustainable building design course was established in an architectural department. The program was evaluated on the basis of authors observation, the feedback of the trainees. This paper presents the outline of the program and the results of the evaluation.
큰 관상동맥 병변에서 약물방출스텐트는 비약물 금속스텐트보다 이점이 있는가?
이왕수 ( Wang Soo Lee ) 대한내과학회 2011 대한내과학회지 Vol.80 No.6
Drug-eluting stents (DES) are widely used rather than bare metal stents (BMS) in percutaneous coronary intervention (PCI) because DES have been shown to dramatically reduce restenosis and improve the rate of event free survival. Many clinical trials have been shown the advantages of DES over BMS in subset of small coronary artery diseases. There are, however, conflicting reports on the advantages of DES over BMS for larger coronary artery lesions. In this issue of the journal, Kim et al investigated the clinical outcomes between DES and BMS in large coronary artery diseases. In future, additional large, randomized, controlled, muticenter trials with new generation DES and intravascular ultrasound-guided PCI will be needed to define the clear role of DES on large coronary artery lesions. (Korean J Med 2011;80:661-663)
김정은 ( Jung Eun Kim ),이왕수 ( Wang Soo Lee ),조은정 ( Eun Jeong Cho ),김상욱 ( Sang Wook Kim ),김치정 ( Chee Jeong Kim ) 대한내과학회 2009 대한내과학회지 Vol.77 No.1
Venous ectasia, also called phlebectasia or venous aneurysm, is an isolated saccular or fusiform dilatation of a vein. Ectasia of the internal jugular vein was once considered rare, but is increasing in apparent frequency due to the wide use of noninvasive diagnostic modalities. A 57-year-old woman was referred for right neck discomfort that had developed 1 month earlier. She complained of a non-painful right neck swelling, located anteromedial to the sternocleidomastoid muscle. Computed tomography and color Doppler ultrasonography showed a 2×1.7-cm right internal jugular venous ectasia. The size of the jugular venous ectasia decreased after compression with a probe and increased during the Valsalva maneuver. Here, we report the first Korean case of primary internal jugular venous ectasia, which presented as an asymptomatic right neck swelling. (Korean J Med 77:124-127, 2009)
풍선도자에 의한 흰쥐의 경동맥 손상 후 phospholipase C-γ1 발현의 변화
임성훈(Seong Hoon Lim),허영선(Young Sun Heo),김학진(Hak Jin Kim),이왕수(Wang Soo Lee),안지현(Ji Hyun Ahn),송영빈(Young Bien Song),김상욱(Sang Wook Kim),김태호(Tae Ho Kim),김치정(Chee Jeong Kim),류왕성(Wang Seong Ryu),유언호(Un Ho Ryo 대한내과학회 2001 대한내과학회지 Vol.60 No.3
Background : While inositol phospholipid-specific phospholipase C (PLC) plays a central role in signal transduction pathways, little is known about its role in the vascular response to injury. Recent studies have shown that phospholipase C-γ1 (PLC-γ1) is required for PDGF-induced DNA synthesis and angiotensin II signaling. This study was undertaken to determine the potential involvement of PLC-γ1 in the in vivo response to vascular injury. Methods : Vascular injury was achieved in the left common carotid artery of six-month-old male Wistar rats. The expression of PLC-γ1 was evaluated at serial time points by immunohistochemistry and Western blot analysis following balloon de-endothelialization of the rat carotid artery. Results : In the denuded carotid artery at 1 week, the neointima became thicker in a symmetrical manner with respect to the long axis. A strong expression of PLC-γ1 at one week after injury was seen primarily in the thin layers of neointima. This increased immunoreactivity of PLC-γ1 persisted at 2-3 weeks after injury, coinciding with the time when neointima gains of its mass. At 4 weeks after injury, staining intensity slightly declined but levels remained elevated. As determined by Western blot analysis, the amount of PLC-γ1 was about 3-fold higher at 3 weeks after injury compared to uninjured vessels (p<0.01). Conclusion : These results suggest that the amplification of traffic within signal transduction pathways involving PLC-γ1 occurs and may play a significant role in neointima formation following arterial injury.(Korean J Med 60:234-241, 2001)
전신적인 발진성, 결절성 황색종을 동반한 제3형 고지단백혈증
김은영 ( Eun Young Kim ),서기우 ( Ki Woo Seo ),김정은 ( Jung Eun Kim ),조은정 ( Eun Jeong Cho ),이왕수 ( Wang Soo Lee ),김치정 ( Chee Jeong Kim ),이갑석 ( Kap Sok Li ) 대한내과학회 2009 대한내과학회지 Vol.77 No.5
A 55-year-old female presented with extensive yellowish eruptive plaques over both elbows and the buttocks that she had first noticed 2 years earlier. Yellowish orange discoloration of her palmar creases was noted. Her serum cholesterol and triglyceride were markedly elevated. Lipoprotein electrophoresis showed a broad β band. On apolipoprotein E genotyping, the arginine at position 158 had been replaced by cysteine in both alleles (E2/E2). Under a diagnosis of type III hyperlipoproteinemia, combined atorvastatin and fenofibrate therapy for 2 months normalized the serum cholesterol and triglyceride levels. (Korean J Med 77:620-624, 2009)