• 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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• 제37권5호
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• pp.410-415
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• 2004

배경: 관상동맥우회술을 시행하는 경우 동반한 승모판폐쇄부전증에 대한 술식은 중등도 이상의 승모 판폐쇄부전증을 보이거나 판첨에 뚜렷한 병변이 확인된 경우에 한정되어 시행되고 있다. 이는 관상 동맥협착증에 동반한 대다수 경도의 승모판폐쇄부전증이 관상동맥협착증에 기인한 허혈성변화에 따른 가역적인 이상으로 판단하는 것에 기인한다. 저자들은 관상동맥협착증에 동반한 승모판폐쇄부전증을 보이는 환자에서 관상동맥우회술만을 단독으로 시행하는 경우 승모판폐쇄부전증이 어떻게 변화하는가를 관찰하고 그 관련요인을 조사하였다. 대상 및 방법: 승모판폐쇄부전증을 동반한 관상동맥협착증 환자 중 1995년 1월부터 2002년 12월까지 단일 술자에 의해 체외순환하 관상동맥우회술만을 받았던 90명의 환자들의 의무기록을 후향적으로 조사하여 수술 전과 최종 추적관찰에서 얻어진 심초음파 결과를 비교하였다. 승모판폐쇄부전증의 변화에 따라 악화된 군, 변화 없는 군, 호전된 군으로 분류하고, 각 군 간의 수술전 심초음파 검사기록과 수술 중 인자들에 대한 통계적인 상관관계를 확인하였다. 결과: 총 90예의 환자 중 수술 후 승모판폐쇄부전증이 악화된 환자는 24명, 변화 없는 군 12명, 호전된 군 54명이었다. 승모판폐쇄부전증의 악화와 유의하게 관련이 있었던 인자는 좌전하행지로의 우회술 여부였으며, 유의성은 확인하지 못하였지만 수술 전 이완기말 좌심실용적은 승모판폐쇄부전증이 호전된 군에서 71.75$\pm$28.45 $m\ell$, 변화 없는 군 84.00$\pm$11.66 $m\ell$, 악화된 군 105.38$\pm$38.89 $m\ell$로 승모판폐쇄부전증이 악화된 군에서 가장 높은 것으로 확인되었다. 수술 전 승모판폐쇄부전증의 정도는 군 간의 유의한 차이를 확인할 수 없었다. 결론: 관상동맥협착증에 동반된 승모판폐쇄부전증은 관상동맥우회술의 단독시행으로 호전을 기대할 수 있을 것으로 생각된다. 그러나 수술 전 승모판폐쇄부전증의 정도로 그 예후를 예측할 수 없어, 초기 단계의 승모판폐쇄부전증도 교정술을 적극적으로 고려하는 것이 좋을 것으로 생각되며, 수술 전 심초음파상 좌심실용적과 수술 중 좌전하행지의 관상동맥우회술 여부 등을 포함한 승모판폐쇄부전증의 예후 인자를 보다 정확하게 규명하기 위한 추가적인 연구가 시행되어야 할 것으로 생각된다.

• 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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• 제15권3호
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• pp.321-324
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• 1982

Patent ductus arteriosus is not uncommon congenital heart disease. Patent ductus arteriosus associated with mitral regurgitation is very rare, however especially nonrheumatic in character. In such a case, a ligation of ductus arteriosus alone makes it regress the symptoms and signs of mitral regurgitation. Till recent days, we have experienced 10 cases of patent ductus arteriosus with mitral regurgitation who had been undergone a ligation of ductus arteriosus alone with good clinical benefits. In 5 cases among above patients, we have followed up the patients from 4 months to 6 years. Herewith, we report these cases with review of some literatures.

• 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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• 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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• 제27권4호
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• pp.313-317
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• 1994

Surgical treatment is possible for the obstructive form of hypertrophic cardiomyopathy and transaortic left ventricular septal myectomy and myotomy has been the procedure of choice. If coexisting intrinsic mitral valve disease exists, mitral valve replacement has been performed. But abnormal systolic anterior motion of anterior mitral leaflet[SAM] with intrinsic normal mitral valve disease is the typical feature of IHSS and we prefer not to replace mitral valve. 3 patients underwent transaortic myotomy and myectomy for IHSS with mitral regurgitation. 2 patients of them have coexisting intrinsic mitral valve diseases such as mitral valve vegetation and chorda rupture. Concomittent mitral valve replacement were performed. 1 patient shows SAM of mitral anterior leaflet but has intrinsic normal mitral valve morphologically and transepicardial echocardiogram and direct monitoring of pressure gradient during the operative procedure gives better information for subsided mitral regurgitation. Post operative course during the 12 months follow-up was uneventful.

• Journal of Chest Surgery
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• 제55권3호
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• pp.239-242
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• 2022

Papillary muscle rupture with severe acute mitral regurgitation is a rare complication of acute myocardial infarction (AMI) that causes pulmonary congestion and cardiogenic shock. Moreover, it has a poor prognosis. Surgical intervention, including revascularization, is indicated; however, surgical mortality remains high. We report the case of an 85-year-old woman with cardiogenic shock from severe acute mitral regurgitation, in whom a hybrid intervention, combining percutaneous coronary intervention with mitral valve replacement via minithoracotomy, was performed after post-infarction papillary muscle rupture. She was discharged in a favorable clinical condition. We describe a novel hybrid intervention for treating a rare complication of AMI, which could minimize surgical invasion in elderly patients, prevent disuse syndrome after the intervention, and improve prognosis. However, mitral valve surgery via minithoracotomy for emergency cases requires technical proficiency, as well as collaboration with other healthcare professionals, and the choice to perform this procedure requires careful consideration.

• 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.

• 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.