알루미늄 호일의 친수코팅 성능 개선에 관한 실험적 연구

김영생(Y. S. Kim),길용현(Y. H. Kil),박환영(H. Y. Park),윤백(B. Youn),카네코호쇼(H. Kaneko),김병열(B. Y. Kim) 대한설비공학회 1998 대한설비공학회 학술발표대회논문집 Vol.1998 No.6-3

승모판막질환에 병발한 동맥색전증의 치험 1례

허용,김병열,이홍섭,김주이,이정호,유회성,Hur, Y.,Kim, B.Y.,Lee, H.S.,Kim, J.E.,Lee, J.H.,Yu, H.S. 대한흉부심장혈관외과학회 1980 Journal of Chest Surgery (J Chest Surg) Vol.13 No.1

We present one case of 26-year-old male having saddle block combined with mitral valvular disease [NYHA Class IV] with auricular fibrillation. The most common cause of emboli is atrial fibrillation. The clinical manifestations of saddle emboli are relatively slow due to development of collateral circulation and large size of lumen of the aorta. The 5month duration of saddle emboli in this case led to severe atrophic changes, coldness, peripheral cyanosis on the both lower extremities, and flexion deformity on the knee and ankle joint of the left lower extremity. We planned staged operation for the saddle block and for mitral stenoinsufficiency and tricuspid insufficiency, because of poor general condition of the patient. The thromboembolectomy of aortic bifurcation was performed through the transabdominal approach without trial of Fogarthy catheter embolectomy, because of expectation of the secondary inflammatory changes of the vessel wall and thrombi which was 3 cm X 1 cm X 0.5 cm in size with irregular surfaced solid in consistency. 1 month later, after thromboembolectomy, mitral valve replacement and tricuspid annuloplasty were performed, with successful early operative result. During operation organized thrombi [1 cm X 0.5 cm] in the left auricle was removed. We wonder if simple management using Fogarthy catheter might be possible to remove the thromboemboli instead of thromboembolectomy by aortotomy in this case.

Annuloaortic ectasia의 외과적 치험

이섭,안욱수,김병열,이정호,유회성,Lee, S.,Ahn, W.S.,Kim, B.Y.,Lee, J.H.,Yu, H.S. 대한흉부심장혈관외과학회 1991 Journal of Chest Surgery (J Chest Surg) Vol.24 No.1

Between November, 1981 and July, 1989, 4 patients, 3 male and 1 female patients ranging in age from 36 to 45 years, were operated on for aortic insufficiency associated with uncomplicated annuloaortic ectasia. All patients were in New York Heart Association class III. Two patients had clinical stigmata of the Marfan syndrome. The surgical treatment consisted of. supracoronary replacement of ascending aorta with vascular graft and replacement of the aortic valve in our first case. and composite graft replacement of the ascending aorta and aortic valve with reimplantation of the coronary arteries in subsequent 3 cases. Our first patient developed aneurysm of proximal aorta and pseudoaneurysm of distal aortic anastomosis 5 years postoperatively. One patient among the three patients with Ben-tall operation, died of ventricular fibrillation and myocardial failure during immediate postoperative period. Remaining 2 patients were in NYHA class I with follow-up of 16 months and 20 months respectively.

식도질환의 외과적 수술에 대한 임상적 고찰

허용,이강식,이재진,김병열,이정호,유회성,Hur, Y.,Lee, K.S.,Lee, J.J,Kim, B.Y,Lee, J.H.,Yu, H.S. 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.6

Since Jan. 1957, 142 cases of benign esophageal stricture, 55 males and 87 females, were managed in our hospital, and their ages ranged from 3 to 77 years. old[mean 31.2yrs]. The most common cause was caustic burns and they all complained dysphagia and some loss of weight, general malaise and substernal pain, which usually appeared in 1 month to 1 year after ingestion of corrosive agents. The mid 1/3 of the thoracic esophagus was the most prevalent portion[29%] but rather evenly distributed along the entire esophagus. Operations were done on 129 patients, of whom 50 patients had ECG[esophagocologastrostomy], 5 PCG[pharyn-gocologastrostomy], 34 EG[esophagogastrostomy], 4 EJG[esophagojejunogastrostomy], 3 PG[pharyngogastrostomy], 2 esophageal end to end anastomosis and 31 Gastrostomy. There were 6 deaths in the postoperative period, so its operative mortality was 4.7%, among them 3 were ECG cases, 2 EG and 1 EJG. And 34 complications occurred so it recorded 24% complication rate. and in details in ECG 46%, PCG 60%, EG 17.6%, EJG 25%, and PG 33%. When we reviewed periodic variations, the mortality rate of the first 20 yrs. period was 6.9%, next 10yrs. 2.6% and now for last 2yrs non.

이차공형 심방중격결손증의 외과적 치료;연령에 따른 혈류학적 상관관계에 관한 고찰

이섭,최병철,안욱수,허용,김병열,이정호,유회성,Lee, S.,Choi, B.C.,Ahn, W.S.,Hur, Y.,Kim, B.Y.,Lee, J.H.,Yu, H.S. 대한흉부심장혈관외과학회 1992 Journal of Chest Surgery (J Chest Surg) Vol.25 No.11

Backgroud. To determine the influence of age at operation upon surgical outcome in patients with isolated secundum atrial septal defect, retrospective clinical analysis was done. Material and method. From June, 1976 to December, 1991, 146 patients, 63 male and 83 female patients ranging in age from 13 months to 56 years, were operated on for isolated secundum atrial septal defect. The patients were divided into 3 groups according to their age at operation: Group I [<20 years old], 91 patients[62.3%]; Group II [21 to 40 years old], 44 patients[30.1%]; GroupIII[>41 years old], 11 patients[7.6%]. Significant differences in clinical features, hemodynamic function, early and late results between age groups were speculated. Results. One hundred thirty-one patients[89.6%] were symptomatic at the time of operation, the most common symptoms being dyspnea on exertion, recurrent respiratory infection, palpitation and chest pain. Patients in NYHA class III or IV were 3.3% in group I, 25% in groupIII, and 54.5% in group Ill. Hemodynamic data was available for 138 patients [94.5%]. Significant pulmonary hypertension [MPA systolic pressure $^3$ 40mmHg] was noted in 22 patients [15.9%]. Patients with pulmonary vascular disease [Rp/Rs>1.25] were 2% in group I, 7.3% in group Il, and 9.1% in groupIII. But there were no significant differences between the age groups in the size of the shunt or the ratio of pulmonary to systemic flow. Atrial septal defects were closed with direct suture in 144 patients and patch repair was performed in 2 patients with high defect. Atrial arrhythmia [8.2%] was the most common postoperative complication. The mean [LSD] duration of follow-up in all patients was 16$\pm$22 months [range, 1~96 months]. Functional result was excellent regardless of the age groups. During follow-up period, late cardiovascular events were arrhythmia [7 cases], reoperation for recurrent ASD [2 cases], and premature late death due to bacterial endocarditis [1 case]. Incidence of preoperative and late atrial fibrillation was significantly higher in older age group. Conclusion. Age at operation is one of the most important predictor of early and late surgical outcome with its impact on the following factors : 1] hemodynamic alterations and ventricular dysfunction due to longstanding volume and pressure overload, 2] pulmonary vascular disease, and 3] atrial arrhythmia including atrial fibrillation as a result of atrial dilatation. Therefore, among patients with surgically repaired atrial septal defects, those operated on over the age of 20 require careful supervision on the long-term basis.

폐결핵에대한 외과적 치험[제 4보]

이섭,안욱수,허용,김병열,이정호,유희성,Lee, S.,Ahn, W.S.,Hur, Y.,Kim, B.Y.,Lee, J.H.,Yu, H.S. 대한흉부심장혈관외과학회 1992 Journal of Chest Surgery (J Chest Surg) Vol.25 No.1

We have analyzed 1559 operated cases during the 32 year period, from October, 1958 to December, 1990. Annual incidence of the surgical treatment decreased from 101[1960] to 25[1990]. The ratio between male and female was 2.1: 1 and the age of peak incidence was in the 3rd and 4th decades. Recently, patients below the age of 20 years were decreased, but above 50 years were much increased. The patients were consisted of far-advanced case in 71.8% and moderately-advanced case in 22.0% in 1990, as compared with 44% and 54% correspondingly in 1960. Preoperative sputum positivity decreased from 91%[1958~1963] to 38%[1982~1990]. Preoperative antituberculous chemotherapy for more than 3 years increased from 16% [1958~1963] to 56.5% [1982~1990]. From the view of surgical indication, totally destroyed lung and destroyed lobe or segment has been main indication. Recently empyema with parenchymal lesion was increased, and so more extensive surgical resection such as pleuropneumonectomy was performed more frequently. The trends in the mode of surgical treatment revealed that thoracoplasty has virtually disappeared and operations required for residuals of pleural disease have increased. Postoperative mortality increased from 1.6-2.0% to 3.6% recently as well as morbidity. On the basis of our study, far-advanced and drug-resistant patients increased in number recently, whose pulmonary function was poor. So postoperative mortality and morbidity was increased despite improved anesthetic and surgical techniques. Proper surgical intervention should be considered before the appearance of resistance for all chemotherapeutic drugs.

인공심장판막 실패에 대한 재치환술의 임상적 고찰

최병철,유환국,안욱수,허용,김병열,이정호,유회성,Choi, B.C.,Yoo, H.K.,Ahn, W.S.,Hur, Y.,Kim, B.Y.,Yoo, H.S. 대한심장혈관흉부외과학회 1991 Journal of Chest Surgery (J Chest Surg) Vol.24 No.7

To evaluate risks, complications and mortality of reoperations on heart valve prosthesis, we reviewed clinical records of 53 patients who underwent reoperation because of prosthetic valve failure[PVF], from Jan 1959 through Jun. 1991. They had undergone 48 mitral, 10 aortic valve rereplacement Primary tissue failure was the main cause of reoperation : it occurred in 51 valves at a mean postoperative interval of 58 months. Calcification and collagen disruption of prosthesis were main causes of primary tissue failure in macro and micropathology, In 3 failing mechanical prostheses, paravalvular leak was in 2 cases, another one case had the thrombi at the hinge portion. If conditions such as emergency operation with or without endocarditis, thromboembolism and advanced NYHA functional class are prevented, we think that reoperative valve replacement has similar morbidity and mortality to initial valve replacement surgery. But our sturdy represents higher mortality [22.6%] because of late surgical intervention failing the prevention of conditions leading to myocardial damage. In conclusion if the tearing, calcification, and a new murmur were detected the early reoperation should be considered to increase late survival.

대동맥 축착증 1례 보고

허용,안욱수,류병하,김병열,장운하,이정호,유회성,Hur, Y.,Ahn, W.S.,Yoo, B.H.,Kim, B.Y.,Chang, U.H.,Lee, J.H.,Yu, H.S. 대한흉부심장혈관외과학회 1982 Journal of Chest Surgery (J Chest Surg) Vol.15 No.3

Coarctation of the aorta is a congenital constriction of the aorta of varying degree usually located slightly distal to the origin of the left subclavian artery. This congenital malformation is found at 5-9% of the congenital heart disease in Europe & North America, but in our country, it is reported as one of rare malformations. We present a case of coarctation of the aorta, which had double diaphragms as discrete form. This is 9 year-old boy, who has suffered from hypertensive symptoms since 6 years before. Coarctation of the aorta was confirmed by aortography, and there was no combined anomalies, and it was postductal type, and coarctations were consisted of two diaphragmatic webs at the both ends with a central aneurysmized. After resection of the coarctated segment completely, Woven Dacron graft was inserted with 18mm in diameter & 2.5cm in length successfully.

폐암의 임상적 고찰 (III)

허용,유환국,안욱수,김병열,이정호,유회성,Hur, Y.,Yu, H.K.,Ahn, W.S.,Kim, B.Y.,Lee, J.H.,Yu, H.S. 대한흉부심장혈관외과학회 1990 Journal of Chest Surgery (J Chest Surg) Vol.23 No.1

A total of 129 patients with a confirmed diagnosis of primary lung cancer were treated at Dep. of Thoracic k Cardiovascular Surgery, National Medical Center, Seoul, Korea, between July, 1981 and Dec., 1988. Particular emphasis was given in this review to the 72 patients that underwent surgical resection of their primary lung lesion. Factors such as histology, type of resection, sex, age, staging, and degree of dissemination were considered possible influences on survival. The age group of fifty k sixty decade occupied 55.8 %, and the youngest being 24 years and oldest 78 years. The incidence ratio of male to female was 3,2:1. The subjective symptoms of the patients were coughing [72.6%], chest pain [48.2%] and hemoptysis [35.6%], which were due to primary local influence. The confirmed diagnostic procedures were bronchoscopic biopsy, sputum cytology needle aspiration biopsy, open lung biopsy, anterior mediastinotomy & lymph node biopsy. By pathologic classifications, the squamous cell carcinoma was the most prevalent, 67 cases [51.9 %], and the adenocarcinoma in 36 cases [27.9%], undifferentiated small cell carcinoma in 13 cases [10.1 %], undifferentiated large cell carcinoma in 9 cases [6.9%], bronchioloalveolar carcinoma was 4 cases [3.1%]. The lymph node dissection with pneumonectomy [42 cases], lobectomy [14 cases] and pneumonectomy [6 cases], lobectomy [9 cases] without lymph node dissection were performed. The post operative TNM Staging[AJC] in 72 cases were Stage I in 24 cases, Stage II in 27 cases, and Stage III in 21 cases. Overall resectable was possible in 72 cases [55.8 %], and the operation mortality was 5.6 % [4 cases].

성인의 선천성 식도.기관지루 6례 보고

허용,강경훈,문경훈,김병열,이정호,유회성,손진희,박효숙,Hur, Y.,Kang, K.H.,Moon, K.H.,Kim, B.Y.,Lee, J.H.,Yu, H.S.,Sohn, J.H.,Park, H.S. 대한흉부심장혈관외과학회 1988 Journal of Chest Surgery (J Chest Surg) Vol.21 No.3

We had been experienced 6 cases of congenital esophagobronchial fistula which underwent surgical intervention in all cases. Of the 6 patients, 5 patients were male, one patient was female. The mean age of patients was 37.8 years old and clinical symptom free period was 27.1 years. According to Braimbridge`s classification, they were belonged to the type II[3 cases], type III[2 cases], <% type I[1 case]. Pre-operative diagnosis was available in 4 cases and the 2 cases could be diagnosed at operation field. The fistulectomy were performed in all cases, concomitant segmental resection[1 case], lobectomy[1 case], bi-lobectomy[1 case], and pneumonectomy[3 cases] were combined.