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제인수,허민영,문치숙,이재호,정수룡,조길현,이영민,김대경,김두일,김동수 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.3
Coronary artery aneurysms are detected with increasing frequency because of the routine use of coronary angiography in the diagnosis and management of coronary artery disease. Although some coronary artery aneurysms are congenital or inflammatory, most are atherosclerotic. The prognosis of atherosclerotic coronary artery aneurysm may depend on the morphology of the aneurysm or the presence of coexisting obstructive disease. Coronary artery aneurysms have been also reported to occur after ballon angioplasty, directional athrectomy, laser angioplasty, and stent implantation with a frequency of 2% to 4%. The long-term outcome of post-intervention coronary artery aneurysm is unknown. We report two cases of the development of a coronary aneurysm 6 months after stent implantation as a treatment of severe obsructive coronary artery disease.
소아에서 Fogarty 카테터를 이용한 일측폐 환기 마취 경험
유수봉,강효석,임지훈,김두식,류시정 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.3
Thoracic surgery may be greatly facilitated by causing selective atelectasis of the lung being operated on (one-lung ventilation anesthesia). But the tube used for one-lung ventilation is greater outer diameter than conventional endotracheal tube when compare to each other with same inner diameter, so in some young children it is impossible to one-lung ventilation using double lumen tube or bronchial blocker tube because of narrow vocal cord. We performed one lung ventilation anesthesia using conventional endotracheal tube and Fogarty catheter as a bronchial blocker in 11-year old women who received lung biopsy surgery and left lower lobectomy.
경막외 혈액 봉합술을 시행받은 자발성 두개내 저압 환자의 분석
김두식,유수봉,윤상호 고신대학교 의과대학 2009 고신대학교 의과대학 학술지 Vol.24 No.2
Background : Spontaneous intracranial hypotension(SIH) is found as a not uncommon cause of headache recently. We wanted to study its demographic characteristics, presenting symptoms and findings and the effect of autologous epidural blood patch (AEBP). Methods : We retrospectively analyzed medical records of 11 patients who were diagnosed of spontaneous intracranial hypotension and treated with AEBP from March of 2006 to October of 2009. Results : Age of patients(10 female and 1 male) was ranged from 29 to 51 years (mean 38.8 years). Their presenting symptoms included typical postural headache(11/11), nausea and vomiting(7/11), dizziness(2/11), stiff neck or neck pain(2/11), shoulder pain(2/11), and back pain(1/11). In nine patients CSF pressure was checked, CSF pressure was less than 6 cmH2O in 8 patients. In nine of eleven patients, CSF leakage was detected in cisternography. Brain MRI showed diffuse meningeal enhancement in six patients and subdural hematoma in one. VAS of postural headache decreased from 8-10(mean 9.6) to 1-5(mean 1.6) after AEBP. Conclusion : Most of the SIH patients were otherwise healthy people. It was prevalent among women, especially young adult. AEBP showed as an excellent treatment modality.
신입 부사관 후보 대학생과 일반대학생의 혈압, 신체조성 및 체력 비교 연구
하수민,신상근,김동두 釜山大學校 附設 體育科學硏究所 2014 體育科學硏究所 論文集 Vol.31 No.-
The purpose of this study was to comparison a study on blood pressure, body composition and physical fitness in department of noncommissioned officer D college Students and P college students. For this study, participants were into four groups, D college male students(A, n=102), P college male students(B, n=51), D college female students(C, n=42), P college female students(D, n=44). The test data were analyzes by independent t-test, and the alpha level of p<.05 was set for all tests of significance. The results of the research were as follows. Group A was %Fat(p<.05) significantly higher than Group B and Group A was grip strength, sit-ups(p<.001) significantly lower than Group B. Group C was weight, BMI(p<.05), %Fat(p<.001) significantly higher than Group D and Group C was grip strength(p<.05), sit-ups(p<.01) significantly lower than Group D. Therefore, D College NCOs students need correct lifestyle and regular exercise. 본 연구는 부산지역 소재 D대학 신입 부사관 후보 대학생과 P대학 일반대학생의 혈압, 신체조성 및 체력을 비교 연구 하였다. 연구결과에서 다음과 같은 결론을 얻었다. 부사관 후보 남자대학생의 체지방률은 일반 남자대학생 보다 유의하게 높았으며, 부사관 후보 여자대학생의 체중, BMI, 체지방률은 일반 여자대학생 보다 유의하게 높았다. 체력은 부사관 후보 남․여 대학생 모두 악력, 윗몸일으키기가 일반 남․여 대학생들 보다 유의하게 낮게 나타났다. 이상의 연구 결과 D대학 신입 부사관 후보 대학생은 바람직한 군인화를 위한 올바른 생활습관과 규칙적인 운동 실천이 요구된다.
安斗守,李在春 成均館大學校 1982 論文集 Vol.32 No.-
The application of Walsh function to the time-domain synthesis problem of the linear control system with time delay is discussed in this study. Expansion of the input and output time functions in Walsh searies leads to a transformation of the original model time-varying delay differential equation into a computationally convenient algebraic form. The result consists of Walsh matrix, operational matrix, coefficient matrix and shift Walsh matrix, and the consequent systems are normalized to an approximate, in least squares principle, algebra by Walsh Spectral decomposition, and then deals with the error function for time delay. Numerial example illustrates how walsh functions may be used to synthesis time varying systems with unknown time delays.
위아전절제술 후 정맥통증자가조절시 Morphine Sulfate와 Ketorolac의 진통효과
유슈봉,윤광,김두식 고신대학교의과대학 2008 고신대학교 의과대학 학술지 Vol.23 No.4
Background: Morphine sulfate, the most commonly used analgesic, produces adequate analgesia for postoperative pain. The authors studied the efficacy and incidence of side effects of morphine sulfate IV-PCA for postoperative analgesia and compared these to butorphanol. Method: Forty ASA physical status I or II patients undergoing subtotal gastrectomy were randomly allocated to one of two groups: Group M (morphine sulfate 60 mg and ketorolac 180 mg, n=20), Group B (butorphanol 10 mg and ketorolac 300 mg, n=20). Drugs for both group were mixed with normal saline (total 100 ml) for infusion. Bolus dose, maintenance dose and lockout interval were 0.5 ml per each press, 1 ml/hr and 15 minutes, respectively. In each groups, numerical rating scale (NRS) score, sedation score and incidence of side effect were checked Results: The NRS score of group M is lower than that of group B (P < 0.05) during 24 hours after the operation. There were no significant differences in sedation score and incidence of side effect between two groups. Conclusions: We recommend 60 mg morphine sulfate, mixed with 180 mg of ketorolac, and normal saline for postoperative pain relief using IV-PCA after subtotal gastectomy.
횡단형 FIR 적응 등화기의 안정도 및 수렴속도의 향상에 관한 연구
安斗守,金鐘夫 成均館大學校 科學技術硏究所 1993 論文集 Vol.44 No.1
After the receive filter, an adaptive equalizer is employed to recover the transmitted data in the presence of channel distortion. The FIR adaptive equalizer are built from a Walsh network and an LMS algorithm. The Walsh network is employed as an adaptive equalizer for which an algorithm for recursively adjusting the tap gain coefficients minimizing the mean square error. The Walsh network consists of a Walsh and Block pulse functions. In this paper, minimization of the mean square error is accomplished by the now well-known LMS algorithm. In the LMS algorithm, the convergence factor is an important design parameter because it governs stability and convergence speed, which depend on the proper choice of the convergence factor. The conventional adaptation techniques use a fixed time constant convergence factor by the method of trial and error. In this paper, we proposed an optimal method in the choice of the convergence factor.
분뇨 처리용 선박 저장탱크에서 발생한 황화수소로 인한 사고 증례
김덕수,임현술,김두희 동국대학교 의학연구소 2000 東國醫學 Vol.7 No.-
본 증례는 폐기물 저장탱크에 장기간 보관된 분뇨를 청소하던 4명의 선원이 급성 중독으로 2명은 사망하고 2명은 생존하였다. 다음날 실시한 작업환경 측정결과 황화수소 농도가 150 ppm 이상 측정되어 황화수소 중독에 의한 사고로 판명되었다. 사망자의 사망원인은 황화수소 중독으로 의식을 잃고 쓰러지면서 저장탱크에 고인 물속에 잠겨 기도 확보가 되지 않아 생긴 익사로 추정된다. 생존자는 100% 산소와 지지치료 만으로 회복되었다. Hydrogen sulfide (H2S), one of the most poisonous gases, is usually encountered in various occupations as a byproduct. Four crew were collapsed in a waste storage tank while they were cleaning it. Immediately they were rescued, but two crew died and two crew survived. Gas analysis in the waste storage tank showed high concentrations of hydrogen sulfide (above 150 ppm) after one day. The causes of death were asphyxiation because their face fell into mixed water with collapsed state, not due to H2S intoxication. The victims completely recovered with supportive care, including 100% normobaric oxygen.