• Journal of Chest Surgery
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• 제43권3호
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• pp.246-253
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• 2010

배경: 술전 경도 및 중등도의 허혈성 승모판막 폐쇄부전증이 동반된 환자들의 무심폐순환 관상동맥 우회로 조성술을 시행한 후의 장기 예후를 추적 조사하였다. 대상 및 방법: 1996년 9월부터 2004년 3월까지 1,000명의 연속된 무심폐순환 관상동맥 우회로 조성술을 시행 받은 환자들의 데이터를 전향적으로 조사하였으며, 97%의 환자에서 추적 조사가 가능하였다. 육십칠명(6.7%)의 환자들이 수술 당시 경도 및 중등도의 허혈성 승모판막 폐쇄부전증이 동반되었다. 허혈성 승모판막 폐쇄부전증이 끼치는 영향에 대하여 수술사망율, 실제생존율 및 주요 심장 부작용이 없는 생존율 등을 비교하였다. 결과: 평균 추적 조사 기간은 $66{\pm}22$개월이었다. 허혈성 승모판막 폐쇄부전증이 동반된 환자들의 연령이 더 높았으며(p<0.001), 더 낮은 심박출량을 보였고(p<0.001) 더 많은 위험 인자들을 갖고 있었다. 여성에게 의미있게 더 많았으며(p=0.002), 수술사망율이나 술전후 심근 경색의 빈도에는 의미있는 차이는 없었다(p=0.25). 팔 년 생존율은 허혈성 승모판막 폐쇄부전증이 동반된 환자들이 더 낮았다($39.6{\pm}11.8%$ vs $76.7{\pm}2.2$, p<0.001). 하지만 동반된 위험 인자들을 교정했을 때 술전 경도 및 중등도의 허혈성 승모판막 폐쇄부전증 자체가 장기 사망률의 의미있는 위험 인자는 아니었다(p=0.42). 8년 간의 주요 심장 부작용이 없는 생존율은 허혈성 승모판막 폐쇄부전증이 동반된 환자들에서 의미있게 낮았다($53.12{\pm}12%$ vs $77{\pm}2%$, p<0.001). 위험 인자들을 교정했을 때 허혈성 승모판막 폐쇄부전증은 주요 심장 부작용이 없는 생존율(HR: 2.31), 울혈성 심기능 저하와 재발성 심근 경색에 의미있는 위험 요소이었다. 결론: 무심폐순환 관상동맥 우회로 조성술을 시행 받은 환자들 중 술전 경도 및 중등도의 허혈성 승모판막 폐쇄부전증이 동반된 경우 더 많은 술전 위험요소들을 갖고 있었다. 술전후의 사망률이나 유병율은 비슷하였으나, 장기적으로 심장 합병증의 유발율은 더 높았다

• Journal of Chest Surgery
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• 제33권1호
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• pp.32-37
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• 2000

Background: Reconstruction surgery of mitral valve regurgitation is now considered as an effective operative technique and has shown good long-term results. Although reconstructive surgery of mitral valve has been performed since 1970s, we have started only in early 1990s in full scale because of small number of the mitral regurgitation compared to mitral stenosis and lack of knowledge from the viewpoint of patients and physicians. Material and Method: From January 1992 to December 1996, 100 patients underwent repair of the mitral valve for mitral regurgitation with or without mitral stenosis in Seoul National University Hospital. 45(45%) of the patients were men and 55(55%) were women. The mean age was 39.9$\pm$14.4 years. The causes of the mitral regurgitation were rheumatic in 61, degenerative in 28 and others in 11. According to the Carpentier's pathological classification of mitral regurgitation 5 patients were type I. 55 patients were type II and 40 patients were type III. 7 patients underwent concomitant aortic valvuloplasty and 8 patients underwent aortic valve replacement. 7 patients underwent Maze operation or pulmonary vein isolation. Result: There were no operative death but 3 major operative complications: 2patients were postoperative low cardiac output syndrome(needed intra-aortic ballon pump support) and 1 patient was postoperative bleeding. There was one late death(1.0%) The cause of death was sepsis secondary to acute bacterial endocarditis. 3 patients required reoperation for recurred mitral regurgitation. There were no statistically significant risk factors for reoperation. The other 96 patients showed no or mild degree of mitral regurgitation 99 survivors were in NYHA functional class I or II. There were two throumboembolisms but no anticoagulation-related complications. Conclusion: We concluded that mitral valve repair could be performed successfully in most cases of mitral regurgitation even in the rheumatic and combined lesions with very low operative mortality and morbidity. The early results are very promising.

• Journal of Chest Surgery
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• 제54권3호
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• pp.165-171
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• 2021

As a percutaneous technique for the reduction of mitral regurgitation, the MitraClip system (Abbott Vascular, Abbott Park, IL, USA) for transcatheter edge-to-edge repair of the mitral valve was developed in 1998 and first used in 2003. Its main advantage is being less invasive than surgery, because it can be performed through a transcatheter approach without any hemodynamic compromise. Recent studies have shown that this procedure reduces symptoms and improves functional capacity with low complication rates. Two randomized clinical trials have investigated the use of this technique for functional mitral regurgitation. The Korean Ministry of Food and Drug Safety approved its use for degenerative mitral regurgitation in 2019, and this procedure started to be performed in Korea in January 2020. Its use for functional mitral regurgitation was also approved in Korea in 2020. In this article, recent evidence on transcatheter edge-to-edge repair of the mitral valve and our initial experiences in Korea will be reviewed.

• Journal of Chest Surgery
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• 제14권1호
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• pp.33-39
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• 1981

In the presence of severe non-calcific mitral regurgitation, a dilated mitral annulus, absence of severe subvalvular chordal thickening, and no major loss of leaflet substance, reconstructive surgery for mitral regurgitation is a reasonable approach. Between March, 1980 to November, 1980, 5 patients underwent mitral annuloplasty using Carpentier Ring for severe mitral regurgitation. All 5 cases were of rheumatic in origin. There were no ruptured chorda tendinae or ruptured papillary muscles except slight thickening of the leaflet. There was no operative or late death. As is Carpentier`s report, in patient with severe mitral regurgitation who meet above criteria, mitral annuloplasty using Carpentier Ring is preferable to valve replacement.

• Journal of Chest Surgery
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• 제48권2호
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• pp.129-133
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• 2015

Severe and permanent tricuspid regurgitation induced by pacemaker leads is rarely reported in the literature. The mechanism of pacemaker-induced tricuspid regurgitation has been identified, but its management has not been well established. Furthermore, debate still exists regarding the proper surgical approach. We present the case of a patient with severe tricuspid regurgitation induced by a pacemaker lead, accompanied by triple valve disease. The patient underwent double valve replacement and tricuspid valve repair without removal of the pre-existing pacemaker lead. The operation was successful and the surgical procedure is discussed in detail.

• Journal of Chest Surgery
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• 제28권9호
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• pp.829-836
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• 1995

Ninety-one adult patients underwent three different methods of annuloplasty and compared them by the amount of tricuspid regurgitation. Group I [n=17 is Kay method, Group II [n=46 is modified Kay method and Group III [n=28 is De Vega and modified De Vega method. Preoperative and postopeative size of the liver and its function, the cardiothoracic ratio, EKG and echocardiogram were analyzed. The follow up was done for all the patients [mean 20.0$\pm$ 8.5 months . The postoperative size of the liver, the postoperative cardiothoracic ratio and the postoperative systolic pressure of the right ventricle decreased significantly compared to preoperative size, ratio and pressure [p=0.0001, p=0.0001, p=0.0001 . But there were no differences between the groups. The results of annuloplasty revealed that tricuspid regurgitation improved postoperatively [p=0.0001 even though there was no statistically significant differences in relation to the methods of annuloplasty. The right ventricular systolic pressure and the amount of regurgitation decreased significantly during the postoperative period by performing 3 different methods of annuloplasty, although we could not find the differences between the three different methods.

• Journal of Chest Surgery
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• 제17권2호
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• pp.171-176
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• 1984

Successful correction of the partial form of atrioventricular[AV] canal is now readily achievable. The most challenging technical features of this anomaly are the associated mitral valvular deformity and the frequent inability to obtain mitral competence. Residual mitral incompetence after repair of mitral cleft figures importantly in the causes of early and late failure. So, accurate and complete repair of the mitral valve cleft might be important. Determination of residual severe mitral regurgitation after repair is desirable to permit mitral valve replacement at the time. We have experienced one case of severe mitral regurgitation which was occurred 6 months after repair of partial form of A-V canal [ASD primum] in 22 years old virgin. Pre-op. left ventriculogram revealed severe mitral regurgitation in this patient. We preferred to perform mitral valve replacement with St. Jude valve in this patient at March 1984. Post-op. course was uneventful to now for 5 months and we report this case, review and discuss the literatures.

• Journal of Chest Surgery
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• 제44권4호
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• pp.285-287
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• 2011

A 53-year-old man presenting with dyspnea and chest pain was diagnosed with acute myocardial infarction secondary to occlusion of the left circumflex coronary artery. Urgent revascularization by percutaneous stenting was successfully performed. However, the post-echocardiography revealed a ruptured papillary muscle that was causing severe mitral regurgitation and aggravation of congestive heart failure. The patient subsequently underwent mitral valve repair with papillary muscle re-implantation. Postoperative echocardiography showed a competent mitral valve without residual stenosis or regurgitation. The patient was discharged from the hospital with an uneventful recovery and has been doing well on outpatient follow up.

• Journal of Trauma and Injury
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• 제28권2호
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• pp.67-70
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• 2015

Traumatic tricuspid regurgitation is a rare complication of blunt chest trauma caused by chordal rupture, anterior papillary muscle rupture and anterior leaflet tear. Since clinical symptoms are vague, early diagnosis is difficult and some patient exhibit symptoms of right heart failure. Right heart failure has been the traditional indication for surgical treatment, such as tricuspid valve replacement. Recently, early detection using transthoracic echocardiography and surgical treatment, like valve repair, prior to overt right heart failure have been shown to better prognosis. We report a case of traumatic tricuspid regurgitation with chordal rupture in patient due to traffic accident.

• 대한수의학회지
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• 제44권2호
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• pp.317-322
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• 2004

This study was performed to evaluate echocardiographic parameters in dogs with experimental mitral regurgitation subjected to dobutamine stress testing. In 8 beagle dogs, a 4-prong grasping forceps was inserted into the left ventricle through the carotid artery with fluoroscopic guidance. The disruption of chordae or mitral valve leaflet was performed. Echocardiographic protocols included quantitative Doppler echocardiography and M-mode measurement for evaluating left ventricle function. After all measurement was obtained at rest, dobutamine was infused incrementally. In stress testing, all measurement also was performed at rest as the same method. In stress Doppler echocardiography, regurgitant fraction and aortic stroke volume was increased significantly (P<0.001). Effective regurgitant orifice and regurgitant volume was not changed. In M-mode examination, fractional shortening was increased significantly at stress test (P<0.001). From the results obtained in this study, it could be suggested that dobutamine stress echocardiography increase left ventricle performance in non-functional mitral regurgitation and quantitative Doppler echocardiography is non-invasive, accurate method in valvular regurgitation.