최근 10년간 원광의대병원에서 시행한 소아 심장혈관 수술의 임상적 고찰

윤향석,정수미,최두영,오광수,오연균,김종덕,양현웅,이삼윤,김형곤,최종범,최순호,노병석 圓光大學校 醫科學硏究所 1995 圓光醫科學 Vol.11 No.2

We reviewed 10 years experiences of the clinical aspects and early postoperative results in 544 pediatric patients(age less than 16 years old). Among them. 529 cases had the congenital heart diseases, and 15 had the acquired diseases. Open heart surgery was performed in 413 patients. 115 cases were treated with non-open heart surgery. 16 with interventional catheterization. Annual increase of the cardiac patients was not significant in recent 10 years, except slight increase in 1994. The mean age of the study patients had been evidently changed to younger year by year. Total mortality rate of the open heart surgery was 6.4%. The cyanotic congenital heart diseases were high in early postoperative mortality by 25.7%, whereas 4% in acyanotic group. The age group less than one month was most highest in surgical mortality(66.7%). There were no deaths in patients with patent ductus arteriosus(103 cases), atrial septal defect(83 cases) or pulmonary stenosis(17 cases). Among 220 patients with ventricular septal defects(VSD). 10(4.5%) were died early postoperatively. In cyanotic group, the patients with pulmonary atresia with ventricular septal defects(PAVSD), transposition of the great arteries(TGA), interrupted aortic arch(IAA), complex cardiac anomalies with isomerism seemed to be most susceptible to an early death.

위성 ATM망에 적합한 응용서비스 모형 개발

최명수,박남철,박형준,김경호,이성로 목포대학교 정보산업연구소 2000 情報産業硏究誌 Vol.8 No.-

The use of the Internet is much increased and the multimedia data such as voice and image should be processed in the Internet. The required characteristics of the communication networks for the 21-st century Internet are the fusion between communications and broadcasting, high speed, large capacity, high intelligence, and personalization. In realizing the characteristics mentioned above, the ATM is the only technique that can practically guarantee QoS and is the core technique in super high-speed service networks. In this paper, we will investigate the international study of the high-speed the satellite communication and then research plans for developing and providing optimum application services.

해안 저질토중 중금속과 유기물질의 오염에 관한 연구

최형일,정경훈,김인수,송영일 조선대학교 환경연구소 1994 環境公害硏究 Vol.11 No.-

The contents of heavy metals and total organics in bottom mud of the Mokpo marine have been investigated. This area was divided into three regions; Daebul, Mokpo, and Sanjung, and sampling sites region were selected by eight sites. Marine bottom mud mere investigated three times during this study and twenty-four samples are taken from eight sampling sites. Analytical species were Cdmium, Copper, Lead, zinc, Arsenic and total organics. The Heavy metals were analyzed by atomic absorption spectrophotometry, also total organics were analyzed by gravimetry. The major resurts of the studies were as follows: 1. The contents of the heavy metals and total organics in marine bottom mud were Cadium 0.272 mg/kg, Copper 3.384 mg/kg, Lead 9.647 mg/kg, zinc 10.031 mg/kg, Arsenic 0.636 mg/kg, Total organics 5.99 wt%. 2. The Zinc was higher than any other heavy metals in the marine bottom mud. The mean contents of heavy metals in Sanjung region was the lowest. 3. Lead and Arsenic species were influenced by the pollutants influxed from Youngsan River, and Cadium and Copper were less than it's contents of the natural soils. 4. The total organics in the marine bottom mud was exceedingly increased as the contrasted with the small particle size of the marine bottom mud, and the corelation coefficients between heavy metals and total organics were high. (0.5<r<0.8)

鑄鐵材料의 Melt Treatment 및 Carbon Contents에 關한 硏究

최익수,김성주,문형태,노무근 삼척대학교 산업과학기술연구소 2001 産業科學技術硏究論文集 Vol.6 No.1

It is the purpose of this study to investigate the melt treatment and properties of cast iron by varifying the holding time after inoculation treatment and carbon contents. The main results obtained by investigating the microstructure and carbon contents are as follows : The number of graphite in cast iron decreases by increasing the holding time of melts after inoculation treatment, and the coarsening of graphite is achieved by increasing the length and thickness of graphite. As the carbon contents increase in cast iron, the shape and size of graphite in cast iron structure increase continuously.

개심술(開心術)의 임상적 고찰 : 치험 200예 200 Cases

최형호,서홍주,임영혁,김정중,배대양,이석기,임진수 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.2

Background and Objectives: Two hundred cases of the open heart surgery due to congenital and acquired heart disease were done using the cardiopulmonary bypass in the Department of Thoracic and Cardiovascular surgery, Chosun University Hospital from November, 1980 to June, 2001. Material and Methods: The number of congenital heart disease was 132 cases. 68 cases were acquired heart disease. 'The age of the congenital heart disease was from 22 days to 45 years. In the acquired heart disease, the age was from 14 to 72 years. Result: Congenital heart disease consisted of 113 congenital acyanotic heart disease, 19 congenital cyanotic heart disease. Corrective operation was done for congenital heart disease with 4. 5 % operative mortality. Of 68 cases acquired heart disease, 44 patients were valvular heart disease, 3 cardiac tumors, 9 ischemic heart diseases, 12 aortic dissections and etc. The operative mortality was 13%. Conclusion: The postoperative complications were appeared in 68 cases and the complications were wound infection, occipital alopecia, low cardiac output syndrome, arrhythmia, septicemia etc. The mortality after open heart surgery was 15 cases and the causes of death were low cardiac output syndrome, septicemia, respiratory failure and left ventricle rupture.

흰쥐 적출 대동맥에서의 알파-1 아드레날린성 수용체 탈감작 현상

최도희,한형수,박정숙,김중영 慶北大學校 醫科大學 1994 慶北醫大誌 Vol.35 No.4

목적 : 흰쥐의 적출 대동맥 절편에서 알파-1 아드레날린성 수용체의 탈감작에 따른 수축력 변화를 확인하고 수축력 변화와 관련된 요인들과의 관계를 검정하기 위해 실시되었다. 대상 및 방법 : Sprague-Dawley rat의 대동맥을 적출하여 알파-1 아드레날린성 수용체 선택적 효현제인 phenylephrine으로 탈감작시킨 뒤 수축력과 이완력의 변화를 확인하였다. 결과 : Phenylephrine에 의한 수축력은 phenylephrine 탈감작에 의해 감소되었다. EDRF와 관련이 있는 이완제인 acetylcholine과 histamine에 의한 이완반응은 phenylephrine 처치로서 변화를 볼 수 없었으나 sodium nitroprusside에 의한 이완은 항진되었다. 탈감작현상은 LNMMA와 methylene blue처치로 인해 영향을 받지 아니하였다. KCl에 의한 수축은 phenylephrine 탈감작으로 억제되었으나 phorbol ester에 의한 수축은 phenylephrine 탈감작으로 인해 영향을 받지 아니하였다. 결론 : phenylephrine에 의해 나타나는 알파-1 수용체 탈감작에 따른 수축력 감소 현상은 이완 작용의 변화와는 관련이 없으며 수축기전의 변화, 특히 calcium에 대한 반응성의 변화에 기인함을 시사하였다. We evaluated alpha 1 adrenergic receptor desensitization and decreased contractility in isolated rat aorta. 4 hour exposure to 10^-5M of phenylephrine (phenylephrine exposure) decreased phenylephrine(10^-10 to 10^-5M)-induced contractility. Phenylephrine exposure had no effect on the relaxation by NO releasing agents, such as acetylcholine(10^-9 to 10^-5M) and histamine(10^-8 to 10^-4M), but enhanced nitroprusside(10^-10 to 10^-6M)-induced relaxation. Phenylephrine-induced desensitization was not altered by the presence of methylene blue and N-monomethyl-L-arginine. After phenylephrine exposure KCl-induced contractility was decreased but phorbol ester-induced contractility was not changed. From these results we can assume that prolonged phenylephrine exposure alter calcium-dependent contraction mechanism and involve in alpha 1 adrenergic receptor desensitization-mediated decrease in contractility.

정보기술이 저항수준에 미치는 영향에 관한 연구

최수형 울산대학교 1999 경영학연구논문집 Vol.6 No.1

Responses from the information users on the information technology(IT) are very important to the success of IT, when new IT is introduced, resistance from the information users are likely to be happen. If appropriate management for IT is not carried out, resistance from the users of IT will be continued. It is necessary for the organizations to minimize user's resistance to the IT in order to reduce the introduction cost of IT and to enhance the degree of usage. To reduce the resistance of users the resistance factors should be analyzed first and then, they should be controlled later on. The purpose of this study is to find out the various factors which affect the employees' resistance to IT in the process of introducing IT, and identify differences in the resistance management according to the organizational level.

충남대학교병원 마취발전의 경향에 관한 분석 : 1967년부터 - 1996년까지 from 1967 to 1996

최세진,김상수,정규돈,윤석화,신용섭,손수창,이원형,김혜자,이정은 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.2

To evaluate the specificity and historical trends of the anesthesia in Chungnam National University Hospital, anesthetic experiences of 83,572 in total performed at Chungnam National University Hospital from January 1967 to December 1996 were analyzed statistically and clinically according to age, sex, surgical department, physical status, elective and emergency surgery, premedicants, IV anesthetics, anesthetic methods, inhalational anesthetics, muscle relaxants. The results were as follows : 1. The number of cases has been steadily increased year by year. 2. The ratio of male to female was 52.8% : 47.2%. 3. According to the age, There were 44,905 cases (54%) in the group of 13-45 years. 4. According to the ASA classification of physical status, most of the cases were belonged to the class 1 & 2 (72.5%). 5. The ratio of elective to emergency was 79.4% to 20.6%. 6. Recently, glycopyrrolate has been used increasingly. 7. Thiopental sodium has been mainly used for intravenous induction agent. 8. General anesthesia has been used mainly. 9. Enflurane is the most common inhalational anesthetic agent. but Isoflurane has been used increasingly. 10. Most of muscle relaxants are Pancuronium & Vecuronium(84.5%).

Hypophosphatasia 환아의 치료 증례

최병제,최형준,이제호,김기덕,박수정 大韓小兒齒科學會 1998 大韓小兒齒科學會誌 Vol.25 No.3

1. Hypophosphatasia 는 골조직 및 치아조직의 비정상적인 석회화를 나타내는 대사장애로, 특징적구강내 소견 인 우치의 조기탈락 양상으로 치과에서 조기진단이 가능하다. 2. 본 증례에서 상악궁 확장을 동반한 의치 제작으로 심미적, 기능적으로 양호한 결과를 얻었으며, 영구치열기 까지 장기적 관찰 및 치료가 필요할 것으로 사료된다. hypophosphatasia is a rare metabolic disorder which manifests characteristics such as abnormal mineralization of bone and dental tissues, diminished serum and tissue alkline phosphatase, and increased urinary secretion of PEA. It ingerited as an autosomal recessive or dominant trait and occurs in all races. In general, hypophosphatasia can be classified in 4 subtypes which are the perinatal, infantile, childhood, adult type depending upon the age at presentation and severity. In young children with Hypophosphatasia the long bones show irregular defects, and the skull showes poor calcification. In older children with premature closure of the skull sutures there may ve multiple lucent area called gyral or convolutional markings, described as resimbling beaten copper, presumably resulting from increased intracranial pressure,Examination of the jaws reveals a generalized lucency of the maxilla and mandible, the cortical bone and lamina dura are thin, and the alveolar bone may be deficient. Clinical features of Hypophosphatasia imclude premature loss of deciduous teeth, especially incisors, hypoplasia of aplasia of root cementum, enamel hypoplasia, irregular calcification of dentin, large pulp chamber, and resorption of marginal alveolar bone and roots. Our report involves a patient with a chief complaint of early loss of both Mx. and Mn. deciduous ncisors. after conducting a through clinical and radiographic examination this patient was referred to pediatrics under the suspicion of hypophosphatasia, the diagnosis proved to be correct and successful results were accomplished through a denture made to improve esthetics and function.

대동맥-장골동맥 폐색증에 대한 경피경관 혈관성형술 및 스텐트삽입술의 누적개존율

최동현,이상목,고석환,홍성화,오수명,윤충,박호철,오주형 대한혈관외과학회 2004 Vascular Specialist International Vol.20 No.1