전립선 비대증 환자에서 Alfuzosin, Doxazosin 단독요법 및 Finasteride를 포함한 병합요법의 효과비교

김두용,류현열 KOSIN UNIVERSITY COLLEGE OF MEDICINE 2006 高神大學校 醫學部 論文集 Vol.21 No.1

Background: The aim of this study was to evaluate the efficacy of alpha-blocker monotherapy and alpha-blocker + 5-alpha-reductase inhibitor combination therapy for the treatment of benign prostatic hyperplasia and the rate of surgery for acute urinary retention or resistance to medical therapy. Methods: From Jan. 2000 to Jan. 2004, one hundred sixty five symptomatic BPH patients had taken alfuzosin only, doxazosin only, alfuzosin + finasteride, and doxazosin + finasteride. Eighteen patients had taken alfuzosin only, 25 doxazosin only, 62 affuzosin + finasteride, 60 doxazosin+finasteride. The mean follow-up time was 7.4±4.2 months, 10.5±6.4 months, 10.3±5.6 months, and 10.6±6.8 months each. International prostatic symptom score (IPSS), quality of life (QOL) index, PSA, and TRUS were checked at first visit. IPSS and QOL index monthly follow-up were done. The response was assessed by measurement of IPSS and QOL index. The cases of acute urinary retention and surgery for resistance to medical therapy were included in this study. Result: The mean age of alfuzosin group is 62.2±8.2 years, doxazosin is 65.5±10.5 years, alfuzosin+finasteride is 66.7±9.4 years, and doxazosin+finasteride is 68.1±9.0 years. The mean PSA of patients is 1.45±0.89ng/dl, 1.63±1.00ng/dl, 1.63±1.00ng/dl, and 1.83±1.09ng/dl. The mean weight of prostate is 35.8±18.1gm, 29.6±9.8gm, 39.8±18.1gm, and 35.5±10.0gm. The change of IPSS after medication in four groups is 17.5±7.7 to 8.5±6.2, 17.5±4.8 to 9.8±4.0, 17.9±7.6 to 10.4±7.5, and 17.8±4.8 to 10.1±8.1. The change QOL index is 3.6±1.1 to 2.3±1.1, 3.4±0.7 to 2.5±0.9, 3.6±1.4 to 2.5±1.3, and 3.7±1.2 to 2.5±1.3 (P<0.05). The rate of surgery for acute urinary retention or resistance to medical therapy is 11.1%, 8.3%, 9.6%, and 6.6%. Conclusion: IPSS and QOL index are statistically improved in all of four groups after medical therapy but, no statistical difference was found between the efficacy of alpha-blocker monotherapy groups and those of alpha-blocker plus finasteride combination therapy groups. The comparison of rates of inevitable surgeries in each groups were also not different statistically. Monotherapy with Alpha-blocker is effective to improve low urinary tract symptom due to BPH. It will be necessary to make a long-term study about the efficacy of finasteride later.

전립선 비대증 환자에서 Alfuzosin, Doxazosin 단독요법 및 Finasteride를 포함한 병합요법의 효과비교

김두용,류현열 고신대학교(의대) 고신대학교 의과대학 학술지 2006 고신대학교 의과대학 학술지 Vol.21 No.1

Background: The aim of this study was to evaluate the efficacy of alpha-blocker monotherapy and alpha-blocker + 5-a】pha-reductase inhibitor combination therapy for the treatment of benign prostatic hyperplasia and the rate of surgery for acute urinary retention or resistance to medical therapy. Methods: From Jan. 200() to Jan. 2004,one hundred sixty five symptomatic BPH patients had taken alfuzosin only,doxazosin only, alfuzosin + finasteride, and doxazosin + finasteride. Eighteen patients had taken alfuzosin only,25 doxazosin only, 62 alfuzosin + finasteride, 60 doxazosin+finasteride. The mean follow-up time was 7.4土4.2 months, 10.5土6,4 months, 10.3 土5.6 months,and 10.6 土 6.8 months each. International prostatic symptom score (IPSS),quality of life (QOL) index,PSA, and TRUS were checked at first visit. IPSS and QOL index monthly follow-up were clone. The response was assessed by measurement of IPSS and QOL index. The cases of acute urinary retention and surgery for resistance to medical therapy were included in this study. Result: The mean age of alfuzosin group is 62,2 土 8.2 years, doxazosin is 65.5 土 10.5 years, alfuzosin+finasteride is 66.7土9,4 years, and doxazosin+finasteride is 68,1 土 9.0 years. The mean PSA of patients is 1.45土(乂89ng/dl,1石3土LOOng/dl,1.63± 1.00ng/dl,and 1,83土 1.09ng/dl. The mean weight of prostate is 35.8土 18,lgm, 29.6土9.8gm,39.8土 18,lgm,and 35,5土 lO.Ogm, The change of IPSS after medication in four groups is 1Z5土7.7 to 8,5 土 6.2, 17.5 土4.8 to 9.8 土 4.0, 17,9 土 7.6 to 10.4 土 7.5, and 17.8 土 4,8 to 10J 土 8丄 The change of QOL index is 3.6土 1.1 to 2.3 土 1J,3.4土0.7 to 2.5土0.9, 3.6土 1,4 to 2.5土 1.3, and 3/7土 1,2 to 2.5土 1.3 (P<0,05). The rate of surgery for acute urinary retention or resistance to medical therapy is 11 J%, 8.3%,9.6%,and 6.6%. Conclusion: IPSS and QOL index are statistically improved in all of four groups after medical therapy but, no statistical difference was found between the efficacy of alpha-blocker monotherapy groups and those of alpha*blocker plus finasteride combination therapy groups. The comparison of rates of inevitable surgeries in each groups were also not different statistically. Monotherapy with Alpha-blocker is effective to improve low urinary tract symptom due to BPH, It will be necessary to make a long-term study about the efficacy of finasteride later.

IEEE 80211e환경에서 전송계층 프로토콜의 성능 분석

김두용,문순란 순천향대학교 산업기술연구소 2006 순천향 산업기술연구소논문집 Vol.12 No.1

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수종의 전부도재관 코어의 두께에 따른 파절강도의 비교 연구

김두용,이영수,박원희,Kim Doo-Yong,Lee Young-Soo,Park Won-Hee 대한치과보철학회 2004 대한치과보철학회지 Vol.42 No.1

Statement of problem : The increased awareness of esthetics in dentistry has brought the esthetic consideration in prosthetic restorations . Dental ceramics offer better esthetics for use of prosthetic restorations. Unfortunately, dental ceramic materials are not always the most suitable candidate materials since their inherently brittle nature. In recent years, basic research in ceramic science has led to the recognition or several approaches to strengthen and to enhance esthetics of ceramics. Several all ceramic systems use ceramic core and porcelain build up structures . Ceramic cores influence to strength of all ceramic crowns . So the strength of ceramic cores is important to all ceramic crowns. Purpose : The purpose of this study is to estimate the flexural strength of ceramic cores in some all ceramic systems. Material and method : A biaxial flexure test was conducted on three groups(Cergo, Empress 2, In-Ceram). Each group consisted of 30 discs of nearly identical dimension with a 0.5mm, 1.0mm, 1.5mm thickness and 12mm in diameter. The fracture load was recorded by Instron. Analysis of valiance(ANOVA) and Tukey's tests were performed using SAS statistical software. Results : 1.5mm thickness of specimens were significantly stronger than 0.5mm and 1.0mm thickness of specimens in Cergo and In-Ceram. But each sepecimen group of Empress 2 was no significantly strength by thickness. In order of In-Ceram, Empress 2 and Cergo has significantly stronger strength in the same thickness. Conclusion : In-Ceram is the strongest ceramic material in 3 materials. All the materials can be used according to the required characters.

이동국의 클래스를 갖는 CDMA 시스템의 성능 분석

김두용 순천향대학교 부설 산업기술연구소 1995 순천향 산업기술연구소논문집 Vol.1 No.2

Mobile stations can be classified with the transmission power level in CDMA system. The different performance parameters will be give to the each class of mobile stations so that the varied quality of services can be provided. In this paper, two classes of mobile stations will be assumed. With the classification of mobile stations, the reverse link capacity are evaluated. It is shown that the reduction of 1 dB of Eb/Io Allows the capacity to increase by 25% and also the data transmission rate and the power control accuracy have a significant effect on the reverse link capacity. Finally, the effect of the variation of the reverse link cell size is evaluated.

낮은 지연을 갖는 사전등록 핸드오프의 성능분석

김두용,박상현 한국산학기술학회 2003 한국산학기술학회논문지 Vol.4 No.4

본 논문에서는 컴퓨터 시뮬레이션을 이용하여 모바일 IP에서 사용하는 낮은 지연을 갖는 사전 등록 핸드오프 방식 의 성능을 분석한다. 시스템의 이용률에 따라서 패킷 손실과 지연을 평가한다. 사전 등록 핸드오프 방식에 참여하는 외부 에이전트는 입력 및 출력포트를 갖는 큐로써 모델링 할 수 있으므로 본 논문에서는 오픈 큐잉 네트워크 모델을 이용하여 사전 등록 핸드오프 방식의 지연 시간값과 시스템내에 있는 패킷수를 얻기 위한 해석적 모델을 제시한다. 해석적 모델과 컴퓨터 시뮬레이션으로 얻은 값이 거의 일치함을 알 수 있다. In this paper we analyze the performance of the low latency pre-registration handoff method of mobile IP by computer simulation. Packet losses and delays are evaluatedin terms of system utilization. Foreign agents that participate in the handoff process can be modeled as queues representing input and output ports. Therefore, we propose an analytical model of pre-registration handoff by using open queueing network model. Simulation results are shown for validating analytical estimates.

Self-Similar 트래픽 환경에서 다단 연결 고속 스위치의 성능 평가

김두용 순천향대학교 부설 산업기술연구소 2004 순천향 산업기술연구소논문집 Vol.10 No.2

Network traffic measurement have shown that the data traffic on LAN and WAN has the self-similar features. Most of works have been done on the performance analysis of a single high-switch under self-similar traffic. In this paper, we evaluate the cell loss probability and the degree of self-similar of interconnected switches employing various buffer management schemes with multiple on/off sources under self-similar traffic. From the simulation results, the self-similarity of a switch depends on the utilization of the preceding switch when self-similar traffic travels through switches of networks. Therefore, it is necessary that the future call admission and congestion control schemes adapt our simulation results in order to achieve the optimal bandwidth allocation.

직접 확산 방식을 이용한 반도체 장비 통신 프로토콜 구현

김두용,조현찬 한국반도체디스플레이기술학회 2013 반도체디스플레이기술학회지 Vol.12 No.2

The semiconductor equipments generate necessary data through communication networks for the effective manufacturing processes and automation of semiconductor equipments. For transferring data between semiconductor equipments and sending data to monitor equipments, several standards for communication protocols have been proposed. Communication networks in semiconductor manufacturing systems will transmit a lot of data traffic, which can be vulnerable in data delay and network failure. Therefore, it is required that data traffic need to be distributed. To accomplish this objective, we recommend the use of a redundant and valuable communication path which is constructed by a wireless sensor network. In this paper, the directed diffusion method for wireless sensor networking is suggested for networking semiconductor equipments. It is shown that how the directed diffusion is employed to connect semiconductor equipments. Also, we show how to implement the SECS of semiconductor equipments communication protocols based on the directed diffusion.

질첨부 및 자궁탈출증 환자에서 Posterior Intravaginal Slingplasty(IVS)의 효용성

김두용,최성 대한비뇨의학회 2006 Investigative and Clinical Urology Vol.47 No.3

요막관암과 유사한 소견을 보인 황색육아종성방광염

김두용,김한석,김인근,문일,김택상,최성,류현열 대한비뇨의학회 2004 Investigative and Clinical Urology Vol.45 No.11

Xanthogranulomatous cystitis(XC) is a very rare benign chronic inflammatory disease of unclear etiology. Herein is reported the case of a 46-year-old woman who presented with a painless lower abdominal palpable mass. According to the cystoscopic, ultrasonographic and enhanced computed tomographic(CT) findings, a urachal carcinoma could be suggested. Partial cystectomy was performed as the presence of a urachal carcinoma could not be ruled out. There was no recurrence of the XC more than 12 months after the partial cystectomy. (Korean J Urol 2004;45:1180-1182)