Left atrial v waves following mitral valve replacement are not specific for significant mitral regurgitation

1992 ◽  
Vol 6 (1) ◽  
pp. 3-7 ◽  
Author(s):  
S. Clay Risk ◽  
Michael N. D'Ambra ◽  
Brian Griffin ◽  
Richard Fine ◽  
John P. O'Shea
Keyword(s):  
Mitral Valve ◽  
Mitral Regurgitation ◽  
Valve Replacement ◽  
Mitral Valve Replacement ◽  
Left Atrial

scholarly journals A Giant Left Atrium due to Rheumatic Mitral Regurgitation, Outcome after Left Atrial Reduction Surgey with Mitral Valve Replacement

2018 ◽  
Vol 14 (1) ◽  
pp. 42-44
Author(s):  
Istiaq Ahmed ◽  
Sorower Hossain ◽  
Ankan Kumar Paul
Keyword(s):  
Mitral Valve ◽  
Mitral Regurgitation ◽  
Left Atrium ◽  
Valve Replacement ◽  
Mitral Valve Replacement ◽  
Left Atrial ◽  
Quick Recovery ◽  
Replacement Surgery ◽  
Atrial Size ◽  
Giant Left Atrium

A trans-thoracic echocardiography and chest radiograph of a 26 year old lady diagnosed as rheumatic mitral regurgitation with atrial fibrillation revealed a giant left atrium of 10.9 cm size with symptoms of dyspnoea and palpitation. The patient was treated with left atrial size reduction along with mitral valve replacement surgery and showed an excellent and quick recovery with total disappearance of symptoms and restoration of sinus rhythm only within few days.University Heart Journal Vol. 14, No. 1, Jan 2018; 42-44

scholarly journals Left atrial geometry in an ovine ischemic mitral regurgitation model: implications for transcatheter mitral valve replacement devices with a left atrial anchoring mechanism

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Akito Imai ◽  
Arash Khamooshian ◽  
Keitaro Okamoto ◽  
Yoshiaki Saito ◽  
Inez J. Wijdh-den Hamer ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Mitral Valve ◽  
Mitral Regurgitation ◽  
Valve Replacement ◽  
Mitral Valve Replacement ◽  
Left Atrial ◽  
Left Ventricular ◽  
Ischemic Mitral Regurgitation ◽  
Device Development ◽  
Transcatheter Mitral Valve Replacement

Abstract Background Transcatheter mitral valve replacement (TMVR) is a challenging, but promising minimally invasive treatment option for patients with mitral valve disease. Depending on the anchoring mechanism, complications such as mitral leaflet or chordal disruption, aortic valve disruption or left ventricular outflow tract obstruction may occur. Supra-annular devices only anchor at the left atrial (LA) level with a low risk of these complications. For development of transcatheter valves based on LA anchoring, animal feasibility studies are required. In this study we sought to describe LA systolic and diastolic geometry in an ovine ischemic mitral regurgitation (IMR) model using magnetic resonance imaging (MRI) and echocardiography in order to facilitate future research focusing on TMVR device development for (I)MR with LA anchoring mechanisms. Methods A group of 10 adult male Dorsett sheep underwent a left lateral thoracotomy. Posterolateral myocardial infarction was created by ligation of the left circumflex coronary artery, the obtuse marginal and diagonal branches. MRI and echocardiography were performed at baseline and 8 weeks after myocardial infarction (MI). Results Six animals survived to 8 weeks follow-up. All animals had grade 2 + or higher IMR 8 weeks post-MI. All LA geometric parameters did not change significantly 8 weeks post-MI compared to baseline. Diastolic and systolic interpapillary muscle distance increased significantly 8 weeks post-MI. Conclusions Systolic and diastolic LA geometry do not change significantly in the presence of grade 2 + or higher IMR 8 weeks post-MI. These findings help facilitate future tailored TMVR device development with LA anchoring mechanisms.

Surgery for Degenerative Mitral Regurgitation Valve Repair v. Valve Replacement with Chordal Preservation

1994 ◽  
Vol 2 (2) ◽  
pp. 90-94
Author(s):  
Masaharu Shigenobu ◽  
Shunji Sano
Keyword(s):  
Mitral Valve ◽  
Mitral Regurgitation ◽  
Left Ventricular Function ◽  
Ventricular Function ◽  
Valve Replacement ◽  
Mitral Valve Replacement ◽  
Mitral Valve Repair ◽  
Left Ventricular ◽  
Valve Repair ◽  
Repair Group

This study compares mitral valve repair and mitral valve replacement with chordal preservation for chronic mitral regurgitation due to myxomatous degeneration with special reference to left ventricular function. Twenty-six patients underwent complete preoperative and 2 years later postoperative echocardiography study. Thirteen patients underwent mitral valve replacement associated with preservation of chordae tendineae and papillary muscles, and 13 patients had mitral valve repair. There were no statistically significant differences between the 2 groups for clinical findings, hemodynamic profiles, or left ventricular function compared prior to surgery. After correcting mitral regurgitation, increase in cardiac index was significant for the repair group. Left ventricular end-diastolic volume decreased in both groups. Left ventricular end-systolic volume significantly decreased in the repair group, but remained unchanged in the replacement group. Both ejection fraction and mean left ventricular circumferential fiber shortening velocity (mVcf) decreased in the replacement group, but significantly increased in the repair group 2 years after surgery. These findings suggest valve replacement with chordal preservation shows less improvement in ventricular systolic function late after surgery compared with mitral valve repair.

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