심장판막 치환술후 단기 추적성적

류한영 대한흉부심장혈관외과학회 1990 Journal of Chest Surgery (J Chest Surg) Vol.23 No.6

96 patients underwent cardiac valve replacement for valvular heart diseases consecutively between February 1986 to February 1990 in the Department of Thoracic and Cardiovascular Surgery of Yeungnam University Hospital. The follow up period was between 6 months and 4.5 years postoperatively[mean 23.4$\pm$13.1 months]. 75 cases got mitral valve replacement, 6 cases, aortic valve replacement, 15 cases, double valve replacement. 30[31.2%] patients were male and 66[68.8%] were female and the age ranged from 14 to 66 years old. Early hospital death within 30 days postoperation were 5 patients[5.2%], consisting of by low cardiac output in 2, infective endocarditis in 1, multiple organ failure with sepsis in 1 patient. There was no late postoperative death. Most common early postoperative complication was wound disruption [8.7%] and then low cardiac output, pneumothorax, pleural effusion in order. Most common late postoperative complications were minor bleeding episodes[8.7%] related to anticoagulant therapy which were consisted of frequent epistaxis in 3, gum bleeding in 2, hemorrhagic gastritis in 1, hypermenorrhea in 1, hematoma in right arm in 1 patient. Valve-related complications included valve thrombosis [1.6%/ patient-year], valve failure due to pannus formation[1.1% /patient-year], prosthetic valve endocarditis[1, 1%o/patient-year] and minor anticoagulant hemorrhage[4.4% /patient-year]. 5 cases of reoperations were performed in 4 patients due to valve failure and all of them were in the mitral positions[2.7% /patient-year]. Cardiothoracic ratios in the chest X-ray decreased at the 6th month and 1st year postoperation in all patients. But in New York Heart Association[NYHA] functional class IV, no change in cardiothoracic ratio was found between 6 months and 1 year postoperation. In the echocardiogram, the size of the cardiac chambers decreased, but ejection fraction increased postoperatively in each functional class. In the electrocardiogram, decreases were found in the incidence of atrial fibrillation, left atrial enlargement, left ventricular hypertrophy with right bundle branch block increasing postoperatively in each functional class. The actuarial survival rate was 98.4% for all patients, 98.7% for mitral valve replacement, 83.8% for aortic valve replacement, and 80% for double valve replacement at the end of a 4.5 year follow up period. Meanwhile the actuarial freedom rate was 91.5% for prosthetic valve endocarditis, 91.6% for thromboembolism, 89.0% for prosthetic valve failure and 83.7% for minor anticoagulant hemorrhage. Preoperative NYHA class III and IV were 75% of all patients, but 95% of all patients were up graded to NYHA class I and II postoperatively.

좌측 총폐정맥 환류이상의 수술 교정 - 1례 보고 -

류한영 대한흉부심장혈관외과학회 1990 Journal of Chest Surgery (J Chest Surg) Vol.23 No.5

The anomalous pulmonary venous return of the entire left lung was an extremely rare congenital anomaly. The reported surgical experience with correction of this disorder was limited. The 3-year-old female patient underwent an operation upon the unilateral total anomalous pulmonary venous return from the left lung, in which the left superior pulmonary vein drained into innominate vein and the left inferior pulmonary vein into the coronary sinus, in Yeungnam University Hospital. The symptoms were nonspecific except frequent upper respiratory infection. Cyanosis was not seen. On auscultatory findings, a grade 2/6 systolic ejection murmur was audible over left second intercostal space of left sternal border and second heart sound had an increased pulmonary component which was widely splitted. The electrocardiogram demonstrated a right ventricular hypertrophy and right axis deviation and chest X-ray showed slightly increased pulmonary vascularity and bulged pulmonary conus. The echocardiogram demonstrated increased right atrial, ventricular, and pulmonary arterial dimension, and also secundum atrial septal defect and enlarged coronary sinus. The cardiac catheterization confirmed the left-to-right with a Qp/Qs of 2.0: 1 and oxygen step-up was seen in pulmonary artery, right ventricle, right atrium, and left innominate vein, and the catheter was not been introduced into the left pulmonary vein. A median sternotomy incision was done. Left superior pulmonary vein was drained to the innominate vein through anomalous vertical vein and the left inferior pulmonary vein drained to right atrium through the coronary sinus. The diversion of the left inferior pulmonary vein to posterior wall of left atrium was done after division in the proximity of coronary sinus. The anomalous vertical vein was diverted to base of left atrial auricle and then a atrial septal defect was sutured directly. The postoperative course was uneventful and she was discharged on the eleventh postoperative day. In the postoperative follow-up-2 months, she has been well without specific problems.

모바일 폰에서의 동적 인터페이스와 정적 인터페이스의 비교

류한영,김동미 한국디지털디자인학회 2007 디지털디자인학연구 Vol.7 No.4

)오늘날 하드웨어의 발달과 함께 정보 표현 기술의 발달은 정보의 전달과 탐색에 있어 과거의 문자와 차원적인2그래픽에서 멀티미디어를 이용한 동적 인터페이스의 구현을 가능하게 하였다 이러한 (Dynamic interface) .동적인 멀티미디어 기반의 인터페이스는 웹 사이트뿐만아니라 모바일 기기의 인터페이스에서도 강력하게 적용되고 있다.일반적으로 동적 인터페이스는 정적 인터페이스보다 좋다고 간주 되어 왔다 하지만 동적 인터페이스가 정적.인터페이스보다 더 좋다는 것을 보여주는 연구는 흔치않다 특히 사용성 측면에서 이러한 연구를 진행한 사례. ,는 거의 발견하기 어려웠다.본 연구는 모바일 사용자 인터페이스를 사용함에 있어동적 인터페이스 와 정적 인터페이스(Dynamic interface)의 사용성 차이를 비교 분석 하여 동 (Static interface) ,적 인터페이스의 사용성이 정적 인터페이스의 사용성 보다 좋은 것은 아님을 밝혀 낼 수 있었다 하지만 본 실.험의 실험 참여자는 정적 인터페이스를 오랜 기간 사용해 온 사용자들이었기 때문에 실험 참여자들의 이러한특성이 반영 되었다고 볼 수 있겠다 즉 사용자의 경험. ,이 실험 결과에 반영 된 것이다.본 연구의 또 다른 흥미로운 발견 점은 사용성이 높은인터페이스가 사용자의 만족도를 높일 수 있다는 것이었다 이는 사용성의 문제를 선호도와 같은 감성적인 만족.이라는 측면에서 고려할 수 있음을 나타내는 것으로 향후 이에 대한 다양한 연구가 필요할 것이다.(Abstract)For last several decades, information expresiontechnologies have been extremely advanced.Dynamic interfaces using multimedia have beenapplied to many digital devices, especially tomobile phones.It has ben believed that a dynamic interfacewould be better than a static interfaces.However, the authors of this paper could not findstudies howing such a belief is corect. Inparticular, it is hard to find a paper showing theusability of dynamic interface is beter than thatof static interface.This paper introduces the results of anexperiment in which dynamic interfaces arecompared with static interfaces. Acording to theresults, dynamic interfaces are not always beterthan static interfaces in terms of usability. Theparticipants of the xperiment were whom haveused static interfaces for a long time. Theauthors believe that participant's uchcharacteristics could cause such results. Inaddition, the results of experiment show that hebeter usability can increase user's satisfaction.(Keyword)Mobile Phone, Dynamic Interface, Static Interface,Usability, Emotional Satisfaction

관통성 흉부손상에 의한 구역기관지 파열의 기관지성형술 : 1례 보고 Report of a case

류한영,김정태,김대준,임상현,노환규,소동문,이철주,송영구,황성철 아주대학교 1996 아주의학 Vol.1 No.2

Rupture of segmental bronchus is an uncommon injury, although the frequency of penetrating chest trauma continues to escalate. Early diagnosis and meticulous repair are essential for good chinical results in there patients. Here we report a successful management of the segmental bronchial rupture resulting from a penetrating thoracic injury. The patient is a 38 years old male who was injured while riding a motorcycle by its handle on the left chest. The initial symptoms were dyspnea and chest pain. An open wound with foreign body was visible on the anterior axillary line of the left chest. The preoperative chest x-ray revealed a hemopneumothorax, and a foreign body density in the left chest. Cardiac injury was ruled out using computed tomography of the chest. The operation was performed with a standard left posterolaleral thoracotomy incision through the fifth intercostal space. There were ruptures of the anteromedial basal and superior segments of the left lower lobe with deep lung laceration. Also massive air leakage was observed through the wound sites. Injury of the major vessels and heart was not seen. The bronchoplasty with debridment of the ruptured bronchial edges and primary anastomosis with interrupted nonabsorbable sutures was performed successfully. The postoperalive course was uneventful.

기관근의 수축성에 대한 말초성 Benzodiazepine 수용체의 역할

류한영,최형철,최은미,손의동,이광윤,김원준,하정희,Rhyu, Han-Young,Choi, Hyung-Cheol,Choi, Eun-Mee,Sohn, Uy-Dong,Lee, Kwang-Youn,Kim, Won-Joon,Ha, Jeoung-Hee 대한약리학회 1997 The Korean Journal of Physiology & Pharmacology Vol.1 No.6

Non-neuronal high affinity binding sites for benzodiazepines have been found in many peripheral tissues including cardiac muscle and vascular smooth muscle, and have been designated as 'peripheral benzodiazepine receptor'. Benzodiazepines have been shown to induce relaxation of the ileal, vesical, and uterine smooth muscles. However, it is still unclear about possible involvement of peripheral benzodiazepine receptor on the contractility of trachealis muscle. This study was performed to investigate the role of the peripheral benzodiazepine receptor on the contractility of canine trachealis muscle. Canine trachealis muscle strips of 15 mm long were suspended in an isolated organ bath containing 1 ml of physiological salt solution maintained at $37^{\circ}C$, and aerated with $95%\;O_2/5%\;CO_2$. Isometric myography was performed, and the results of the experiments were as follows: Ro5-4684, FGIN-1-27 and clonazepam reduced a basal tone of isolated canine trachealis muscle strip concentration dependently, relaxant actions of RoS-4684 and FGIN-1-27 were antagonized by PK11195, a peripheral benzodiazepine receptor antagonist. Flumazenil, a central type antagonist, did not antagonize the relaxant action of Peripheral type agonists. Saturation binding assay of [3H]Ro5-4864 showed a high affinity$(Kd=5.33{\pm}1.27nM,\;Bmax=\;867.3{\pm}147.2\;fmol/mg\;protein)$ binding site on the canine trachealis muscle. Ro 5-4684 suppressed the bethanechol-, 5-hydroxyoyptamine- and histamine- induced contractions. Platelet activating factor (PAF) exerted strong and prolonged contraction in trachealis muscle strip. Strong tonic contraction by PAE was attenuated by Ro 5-4684, but not by WEB 2086, a PAF antagonist. Based on these results, it is concluded that the peripheral benzodiazepine receptor mediates the inhibitory regulation of contractilty of canine trachealis muscle.

Chlorpromazine 이 과분극 정지심장의 재관류 손상에 미치는 보호효과

류한영 대한흉부심장혈관외과학회 1990 Journal of Chest Surgery (J Chest Surg) Vol.23 No.1

This study was designed to investigate the protective effect of chlorpromazine against the reperfusion injury of myocardium after high potassium cardioplegic arrest. Langendorff`s preparations of rat heart were infused with high potassium cardioplegic solution[St. Thomas Hospital Solution] at 25oC. Chlorpromazine [10-7M] increased the recovery of myocardial contractility[dp/dt], left ventricular pressure[LVP], and coronary flow rate of the reperfused heart. Both in control and experimental groups, the restoration of myocardial activity could not reach to the level of preplegic control. These results suggest that the etiologic factors of the reperfusion injury include the influence of high potassium cardioplegic solution and/or reperfusion itself, and that chlorpromazine protects myocardium from the reperfusion injury.

좌측 주기관지 외상성 단절의 지연복원 -1례 보고-

류한영,박이태,한승세,Ryu, Han-Yeong,Park, Lee-Tae,Han, Seung-Se 대한흉부심장혈관외과학회 1990 Journal of Chest Surgery (J Chest Surg) Vol.23 No.3

A complete transection of left main bronchus was repaired by end to end anastomosis 5 months after the chest trauma in the Yeungnam University Hospital. The patient was a 36 years old male who had been injured bluntly by a heavy package on the left chest. The initial symptoms and signs were dyspnea, chest pain and subcutaneous emphysema on the left neck, but on admission at our hospital his chief complaint was only mild left chest discomfort. The preoperative chest X-ray findings 5 months after the trauma revealed total collapse of the left lung, deviation of trachea to the left, elevation of left diaphragm, abrupt discontinuation in the course of an air-filled left main bronchus and bronchoscopy showed that the left main bronchus was completely occluded, without any signs of inflammation, approximately 4 cm from the carina. The operation was performed through standard posterolateral thoracotomy incision at the fifth intercostal space. There was not any suppuration within the transected lung but plenty of white mucus which was removed by forceful suction. The transected bronchial edges were debrided and anastomosed primarily by end to end with interrupted nonabsorbable sutures. The suture line was reinforced with a pleural flap. The postoperative course was uneventful and pulmonary function following operation improved progressively and proved the delayed repair to have a reasonable decision.

외상성 대동맥 절단 -1례 보고-

류한영 대한흉부심장혈관외과학회 1995 Journal of Chest Surgery (J Chest Surg) Vol.28 No.9

Improvements in the operative management of traumatic aortic transection have resulted in safe and expeditious repair. Nonetheless, multisystem injuries continue to inflict significant numbers of deaths. We have experienced a case of acute traumatic aortic transection in 41 years old male patient by a traffic accident. The transection was just distal to the origin of the left subclavian artery. We have done a synthetic graft interposition under left atrium to left femoral artery bypass with centrifugal pump. His postoperative course was smooth, and discharged without any complications.

농흉에 있어서 비데오 흉강경을 이용한 늑막박리 및 배농술

류한영,소동문,이철주,최호 아주대학교 의과학연구소 1996 아주의학 Vol.1 No.1

A thoracic empyema is a collection of pus in the pleural space. The most effective treatment of empyema thoracis remains debated. Among the contending therapies, a technique of irrigation for the management of empyema has been described. Initial thoracoscopy under general anesthesia enabled full debridement and division of loculi within the empyema cavity with direct vision. So we employed thoracoscopic debridement and irrigation in a select group of patients with empyema, excluding those with complications, severely debilitated patients, and those with bronchopleural fistula. In particular we chose patients in the second phase of fibropurulent empyema for inclusion. All cases except one with lung cancer were completely resolved. Our results indicate that thoracoscopic debridement and drainage as a first-line measure for second phase empyema thoracis is a safe and relatively atraumatic procedure.

“가톨릭교회 밖에서의 교회성의 인정”에 대한 논평

류한영 한국가톨릭신학학회 2002 가톨릭신학 Vol.1 No.1