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A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
Published on: October 16, 2021
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Improvement in Left Cardiac Function Following Mitral Valve Repair: Analyses Based on Cardiac Magnetic Resonance
Yoshihiro Hayata1, Noriyoshi Sawabata2, Takehisa Abe1
1Department of Thoracic and Cardiovascular Surgery, Nara Medical University School of Medicine, Kashihara, Japan.
In Vivo (Athens, Greece)
|September 3, 2020
Summary
Mitral valve repair (MVR) in chronic mitral regurgitation patients improved left atrial (LA) and left ventricular (LV) function, but did not lead to structural improvements in these cardiac chambers.
Area of Science:
- Cardiology
- Cardiac Surgery
- Medical Imaging
Background:
- Chronic mitral regurgitation (CMR) can lead to significant structural and functional changes in the left-sided cardiac chambers.
- Mitral valve repair (MVR) is a common surgical intervention for CMR.
Purpose of the Study:
- To evaluate the impact of MVR on the structural and functional characteristics of the left atrium (LA) and left ventricle (LV) in patients with CMR.
- To assess changes using cardiac magnetic resonance imaging (CMRI).
Main Methods:
- A cohort of 103 patients undergoing MVR was analyzed.
- 21 patients with normal preoperative left ventricular (LV) function were selected for detailed CMRI analysis.
- Preoperative and postoperative CMRI data were used to assess LA and LV structure and function.
Main Results:
- Postoperative MVR significantly reduced LV end-diastolic volume, LV end-systolic volume, and LV mass (p<0.01).
- A trend towards decreased LV ejection fraction was observed postoperatively.
- LA volume parameters significantly decreased postoperatively (p<0.01).
- Positive effects of conduit function on LV filling volume were noted (p<0.01), but no impact on booster pump function (p=0.01).
Conclusions:
- Successful MVR in patients with CMR restores LA and LV function.
- Restoration of cardiac chamber function after MVR is not accompanied by structural improvements in the LA and LV.
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