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유병수 ( Byung Su Yoo ) 대한내과학회 2011 대한내과학회지 Vol.81 No.6
Optimal treatment of heart failure is important to reduce hospitalization and mortality. In according to recommendation for treatment from major guideline, most patients with HF should be routinely managed with a combination of 3 types of drugs: a diuretic, an ACEI or an ARB, and a beta blocker. The value of these drugs has been established by the results of numerous large-scale clinical trials, and the evidence supporting a central role for their use is compelling. This review is focused on the drug treatment based on the evidence and practical implication. (Korean J Med 2011;81:716-719)
급성 심근경색증 환자에서 조기에 적절한 재관류 요법을 시행받지못한 요인
유병수(Byung Su Yoo),윤정한(Jung Han Yoon),박금수(Keum Soo Park),여경구(Kyung Koo Yoh),조윤경(Yun Kyung Cho),안승찬(Seung Chan Ahn),이용규(Yong Kyu Lee),송광선(Kwang Seon Song),최경훈(Kyung Hoon Choe),이부수(Boo Soo Lee),황성오(Sung 대한내과학회 1995 대한내과학회지 Vol.48 No.6
Objectives: Early application of reperfusion therapy such as thrombolytic agent or direct PTCA is utmost important to amximize the efficacy of reperfusion therapy in patients with aute myocardial infarction. However, early adequate reperfusion thearpy was given only in 15% to 36% pf patients with acute myocardial infarction and substantial patients were not benefited from reperfusion therapy, Therefore, we performed these study to evaluate the reasons for which patients with acute myocardial infarction cannot receive an adequate reperfusion therapy. Methods: We analyzed the initial electrocardiogram and various time delays from chest pain onset time, first hospital arrival time, transfer time, ER arrival time, and door to reperfusion time in 138 patients with acute myocardial infarction from Jan. 1991 to Oct. 1993 admitted to Wonju Christian Hospital. Patients were grouped as reperfusion group(n=55) who had reperfusion therapy such as thrombolytic trial or direct PTCA and conservative grou who had not received reperfusion therapy(n= 83). Results: 1) Eighty-three cases(60.1%) did not received an adequate reperfusion therapy. 2) Hospital arrival time of patients was 237±162min and 786±615min in reperfusion and conservative group(p<0.05) respectively. Patient time delay was 103±98min and 439±511min, first hospital time delay, 93±78min and 333±482min, and transfer time, 81±59min and 105±64min in reperfusion and conservative group respectively(p<0.05). Only 4.8% of patients was transferred from first hospital after reperfusion therapy. 3) Patient time delay was the most common reason of not receiving reperfusion therapy, and time delay and lack of adequate reperfusion therapy at the first hospital inspite of early arrival were the second place. Other reasons were contraindication to lytic therapy(4 cases), definite Q wave MI(11 cases), inconclusive EKG(4 cases), and delay in therapy(4 cases). Conclusion: The most common reason of not receiving reperfusion therapy was patient delay in seeking medical care(45.8%) and time delay at first hospital in 22 cases(26.5%). To maximize the effectiveness of reperfusion therapy, it is important to shorten hospital arrival time delay and widespread use of reperfusion therapy at first hospital is recommeded.
유병수 ( Byeung Su Yoo ),송준현 ( Jun Hyun Song ),이찬희 ( Chan Hee Lee ),이지수 ( Ji Soo Lee ),박찬일 ( Chan Il Park ),이수곤 ( Soo Kon Lee ) 대한류마티스학회 1995 대한류마티스학회지 Vol.2 No.2
Interstitial cystitis has been thought to result from autoimmune phenomenon and its ocurrence in systemic lupus erythematosus (SLE) has rarely been reported. We report a case of female patient with SLE whose initial urinary symptoms were caused by intersitial cystitis. Radiography showed the reduced bladder capacity, irregularity of bladder wall, hydronephrosis and hydroureter. Deep bladder wall biopsy was performed and a diagnosis of interstitial cystitis with SLE was made. She was treated with steroid and stent insertion and showed symptomatic improvement. We consider the recognition of bladder involvement in systemic lupus erythematosus is important because it may be a reversible cause of renal failure in a patient with lupus erythematosus and adequate therapy may preserve bladder size and function.
유병수 ( Byung Su Yoo ) 대한내과학회 2012 대한내과학회지 Vol.82 No.6
Assays for B-type natriuretic peptide (BNP) or N-terminal pro-brain BNP (NTproBNP) BNP are useful diagnostic method for evaluation of patients with dyspnea. And, natriuretic peptide levels have important prognostic value in heart failure. Therefore, measurements of BNP or NT-proBNP, taken together with conventional clinical assessment, may assist in the decision of treatment process. The following brief review summarizes available information concerning clinical significance of BNP or NT-proBNP.
유병수,봉태호,김성렬,Yoo, Byeong-Soo,Bong, Tae-Ho,Kim, Sung-Ryul 한국지반공학회 2019 한국지반공학회논문집 Vol.35 No.6
액상화 평가를 수행할 때 진동전단응력비(CSR)는 일반적으로 지반응답해석 또는 Seed & Idriss의 간편법을 수정한 방법을 통해 산정하고 있다. 본 연구에서는 진동전단응력비 산정방법의 적용성을 분석하기 위하여 1차원 등가선형 지반응답해석을 수행한 후 미연방도로국(FHWA), 일본도로협회(JRA), 국내설계기준(KDS) 등에서 제안한 방법을 적용하여 진동전단응력비를 산정하였다. 연구결과, 국내설계기준(KDS)으로 산정한 진동전단응력비가 해석 결과와 가장 큰 오차를 나타내었다. 그 이유는 국내설계기준의 경우 깊이에 따른 응력감소계수를 최대진동전단응력의 비가 아닌 최대지반가속도의 비로 정의하는 오류가 있기 때문이다. Usually, the cyclic shear stress ratio (CSR) for the assessment of liquefaction has been determined by performing ground response analysis or adopting simplified method suggested by Seed & Idriss with some modifications. In order to analyze the applicability of the CSR evaluation methods, the present study performed one-dimensional equivalent linear analysis and evaluated CSR based on design codes from FHWA, JRA, and KDS. The comparison of the CSR obtained from each code showed that the CSR from KDS showed the largest error with the analysis results. The reason is because KDS has an error, which defines the stress reduction coefficient applying the maximum acceleration at each depth, not the maximum cyclic shear stress mobilized in the soil.