• Journal of Chest Surgery
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• 제23권3호
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• pp.488-500
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• 1990

Author compared the effect of surgical methods between 40 patients who received mitral valve replacement with complete excision of the mitral valve[resected group] and 41 patients who received mitral valve replacement with preservation of posterior chorda tendineae and posterior mitral leaflet[preserved group] from 1985. 2. to 1989. 4. at cardiothoracic department of Pusan National University Hospital.v 1. There was no significant difference between the preserved group and resected group in cardiopulmonary bypass time and aortic cross clamping time and NYHA classification. 2. In preserved group of Mitral stenosis and Mitral regurgitation, the left ventricular functions were much improved after mitral valve replacement than resected group, but there was not so difference between the preserved group and reserved group in Mitral steno-regurgitation. 3. There were remarkable decrease in complication rate in preserved group compared to resected group. And also the death rates were remarkably decreased in preserved group which was 4.9% compared to resected group which was 17.5%. As the preservation of the posterior mitral leaflet and chorda tendineae during mitral valve replacement in mitral valve disease showed significantly improved effects in the maintaining of left ventricular function and reducing the postoperative complication, I assume the preservation of posterior mitral leaflet and chordae during mitral valve replacement will bring better result.

• Journal of Chest Surgery
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• 제27권3호
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• pp.234-237
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• 1994

We report a case of double orifice mitral valve complicating a partial atrioventricular septal defect.The preoperative diagnosis was suggested by a characteristic angiographic and echocardiographic findings but the correct diagnosis of double orifice mitral valve itself was proven by open heart surgery. The smaller accessory mitral orifice was located in the left lateral leaflet and was left untouched. The A-V septal defect was closed with Gore-Tex patch and localized tricuspid annuloplasty was done using Gore-Tex tubular graft for correction of severe tricuspid regurgitation. The anterior mitral cleft left intact had mild mitral regurgitation on postoperative echocardiography.Postoperative course was uneventful and the patient was discharged 2 weeks later.

• Journal of Chest Surgery
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• 제32권12호
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• pp.1131-1134
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• 1999

After a penetrating thoracic injury early detection of intracardiac injury and early surgical repair when indicated are essential. A case presenting severe respiratory distress two weeks after a penetrating thoracic injury is reported. Transesophageal echocardiography showed massive pericardial effusion ventricular septal defect and mirtal regurgitation, The infundibular ventricular septal perforation was repaired using a Dacron patch the anterior mitral leaflet by interrupted sutures and the ruptured chordae of the posterior leaflet by a new chordae formation.

• Korean Journal of Radiology
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• 제22권10호
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• pp.1609-1618
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• 2021

Objective: Arrhythmogenic mitral valve prolapse (MVP) is an important cause of sudden cardiac death characterized by fibrosis of the papillary muscles or left ventricle (LV) wall, and an association between late gadolinium enhancement (LGE) of the LV papillary muscles and ventricular arrhythmia in MVP has been reported. However, LGE of the papillary muscles may be observed in other causes of mitral regurgitation, and it is not limited to patients with MVP. This study was to evaluate the association of LGE of the LV papillary muscles or ventricular wall on cardiac magnetic resonance imaging (CMR) and ventricular arrhythmia in patients with mitral regurgitation. Materials and Methods: This study included 88 patients (mean age ± standard deviation, 58.3 ± 12.0 years; male, 42%) with mitral regurgitation who underwent CMR. They were allocated to the MVP (n = 43) and non-MVP (n = 45) groups, and their LGE images on CMR, clinical characteristics, echocardiographic findings, and presence of arrhythmia were compared. Results: LV myocardial wall enhancement was more frequent in the MVP group than in the non-MVP group (28% vs. 11%, p = 0.046). Papillary muscle enhancement was observed in 7 (7.9%) patients. Of the 43 patients with MVP, 15 (34.8%) showed LGE in the papillary muscles or LV myocardium, including 12 (27.9%) with LV myocardial wall enhancement and 4 (9.3%) with papillary muscle enhancement. One patient with bilateral diffuse papillary muscle enhancement experienced sudden cardiac arrest due to ventricular fibrillation. Univariable logistic regression analysis showed that high systolic blood pressure (BP; odds ratio [OR], 1.05; 95% confidence interval [CI], 1.01-1.09; p = 0.027) and ventricular arrhythmia (OR, 6.84; 95% CI, 1.29-36.19; p = 0.024) were significantly associated with LGE of the papillary muscles. Conclusion: LGE of the papillary muscles was present not only in patients with MVP, but also in patients with other etiologies of mitral regurgitation, and it was associated with high systolic BP and ventricular arrhythmia. Papillary muscle enhancement on CMR should not be overlooked.

• Journal of Chest Surgery
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• 제18권1호
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• pp.62-68
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• 1985

10 patients with mitral regurgitation associated with various congenital cardiac anomalies were treated by reconstructive techniques in the Department of Thoracic and Cardiovascular Surgery, Hanyang University Hospital during the period of 2 years from 1982 to 1984. There were mitral valvular cleft in one case, chordae tendineae rupture associated with congenital multiple cardiac-anomalies [VSD, PDA, prolapse of aortic non-coronary cusp through VSD] in one case, elongated chordae tendineae after removal of left atrial myxoma in one case, and mitral annular dilatation associated with VSD in 3 cases, large PDA in 2 cases, aortic regurgitation [bicuspid valve] in one case, and unknown origin in one case. Owing to the various pathology above mentioned, reconstructive surgical approach to mitral incompetence is accordingly complicated and a combination of the following different procedures were properly used case by case, that is, suture of chordae tendineae, shortening of elongated chordae tendineae, closure of VSD, ligation of PDA, aortic valvuloplasty, mitral annuloplasty with mattress suture, etc. All patients were survived and they have been excellent postoperative results.

• Journal of Chest Surgery
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• 제39권8호
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• pp.611-618
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• 2006

배경 : 관상동맥협착증에 동반되는 중등도의 만성 허혈성 승모판막 폐쇄부전의 경우 승모판막에 대한 수술적 치료가 필요한지에 대하여 많은 논란이 있다. 저자는 이러한 환자들을 대상으로 임상 결과를 알보고자 하였다. 대상 및 방법: 1992년 1월부터 2005년 2월까지 관상동맥 우회로 조성술을 시행 받은 환자 중 중등도의 허혈성 승모판막 폐쇄부전이 있던 44명의 환자를 대상으로 후향적 연구를 시행하였다. 승모판막 수술을 시행 받은 환자는 20명이었고 (group 1) 승모판막 수술을 시행 받지 않은 환자는 24명이었다(group 2). Group 1에서 체외심폐순환 시간이 유의하게 걸었으나 (p<0.01) 나이, 성별, 수술 전 심박출 계수, 문합한 혈관의 수 등 다른 인자는 두 group 간에 차이가 없었다. 수술 후 심초음파 시행 시기는 평균 $21.2{\pm}28.0$개월이었고 평균 추적관찰기간은 $30.1{\pm}29.6$개월이었다. 결과: 두 group 간에 수술 사망률은 유의한 차이가 없었다(group 1 vs group 2, 15.0% vs 8.3%, p=0.493). Group 1에서 group 2보다 승모판막 폐쇄부전도 ${(0.81{\pm}0.91\;vs\;1.50{\pm}0.05,\;p=0.046)}$, 폐쇄부전 정도의 경감 ${(1.75{\pm}0.93\;vs\;0.70{\pm}1.26,\;p=0.009)}$에서 차이를 보였다. 수술 후 섬박출 계수 ${(34.1{\pm}11.4%\;vs\;41.6{\pm}12.9%)}$, 좌심실 수축기 용적 ${(118.2{\pm}63.9\;ml%\;vs\;85.6{\pm}281\;ml)}$, NYHA functional class ${(2.1{\pm}0.2\;vs\;2.4{\pm}1.2)}$는 차이가 없었고, 5년에서의 생존율도 유의한 차이를 보이지 않았다${(85{\pm}8%\;vs\;82{\pm}8%)}$. 수술 사망에 대한 유의한 위험 인자는 없었으며 만기 사망에 대한 위험인자는 수술 전 심방 세동이 있던 경우(p=0.042)였고 승모판막 수술의 유무는 만기 사망과 유의한 관계를 보이지 않았다. 결론: 중등도의 승모판막 폐쇄부전이 있는 경우 승모판막을 수술하는 것이 수술 후 폐쇄부전의 정도가 의미 있게 감소하였으나 생존율 및 심장 기능에 있어서는 별 차이가 없었다. 이러한 환자에서 승모판막 수술의 필요성 및 심실 기능의 향상을 위한 좀 더 전향적인 연구가 필요하리라 생각된다.

• 한국가시화정보학회지
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• 제16권2호
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• pp.31-37
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• 2018

Ischemic mitral regurgitation (IMR) is the primary mitral valve (MV) pathology in the aftermath of myocardial infarction as a consequence of regional left ventricular (LV) remodeling. We investigated the effect of asymmetric papillary muscle (PM) displacement and annular dilation on IMR development. Virtual MV modeling was performed to create a normal human MV. Asymmetric PM displacement, asymmetric annular dilation, and the combination of these two pathologic characteristics were modeled. Dynamic finite element evaluation of MV function was performed across the complete cardiac cycle for the normal and three different IMR MV models. While the normal MV demonstrated complete leaflet coaptation, each pathologic MV model clearly revealed deteriorated leaflet coaptation and abnormal stress distributions. The pathologic MV model having both asymmetric PM displacement and annular dilation showed the worst leaflet malcoaptation. Simulation-based biomechanical evaluation of post-ischemic LV remodeling provides an excellent tool to better understand the pathophysiologic mechanism of IMR development.

• Journal of Chest Surgery
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• 제21권3호
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• pp.588-593
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• 1988

We experienced a case of interrupted aortic arch[Type A] associated with PDA, VSD, mitral regurgitation and single coronary artery. The patient was 7 years old boy, who showed congestive heart failure[NYHA functional class III]. One stage total correction was performed under profound hypothermia with total circulatory arrest. Aortic continuity was established using PDA with anterior wall of main pulmonary artery flap. VSD was closed with Dacron patch and mitral regurgitation repaired by Reed`s annuloplasty method. The postoperative cardiac catheterization revealed no pressure gradient between ascending aorta and descending aorta, decreased pulmonary artery pressure and trivial residual shunt[Qp/Qs: 1.28]. The aortogram showed good continuity of the aorta without narrowing of the anastomotic site. During the period of 1 year follow up, heart failure symptoms were nearly subsided.

• Journal of Chest Surgery
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• 제18권1호
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• pp.92-96
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• 1985

A cleft in the anterior mitral valve leaflet is commonly associated with atrioventricular septal defects, but may occur as an isolated phenomenon. The cleft mitral valve can cause regurgitation, and surgical treatment of the cleft leaflet should conserve the existing valve if possible. But if satisfactory hemodynamic security cannot be obtained with a reconstructive procedure, the valve should be replaced. We present one case of an isolated cleft in the anterior mitral valve leaflet. The patient showed marked mitral regurgitation in the preoperative left ventriculogram. We managed him successfully by interrupted suture repair of the cleft, and he was discharged uneventfully.

• Journal of Chest Surgery
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• 제51권1호
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• pp.61-63
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• 2018

We report the case of a patient with mitral regurgitation complicated by type B dissection and Marfan syndrome (MFS) who was managed successfully with minimally invasive mitral valve repair. Without type A aortic dissection or aortic root dilation, MFS patients may develop mitral valve regurgitation, as in this case, and need valve surgery to improve their symptoms and long-term survival. However, it is not clear that a full sternotomy and prophylactic aortic surgery are necessary. Although retrograde perfusion to the dissected aorta is controversial, our approach minimizes the risk of future anticipated aortic surgery in MFS patients.