What is the clinical evidence from this study?

Study design: Cohort. Population: Chronic mitral regurgitation (n=21). Intervention: Mitral valve repair vs. Preoperative baseline. Primary outcome: Structural and functional changes of left-sided cardiac chambers (LV and LA volumes and mass) (p=<0.01).

What does this research mean for the field?

Mitral valve repair significantly reduces left ventricular end-diastolic volume, end-systolic volume, mass, and left atrial volume parameters in patients with chronic mitral regurgitation. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate structural and functional changes in left-sided cardiac chambers using cardiac magnetic resonance imaging in patients with chronic mitral regurgitation after mitral valve repair.

January 1, 2020In VivoOpen Access

Improvement in Left Cardiac Function Following Mitral Valve Repair: Analyses Based on Cardiac Magnetic Resonance Imaging

Q: What are the key findings of this study?

Mitral valve repair significantly reduced LV end-diastolic volume, LV end-systolic volume, LV mass, and LA volume parameters postoperatively (p<0.01).

Q: What does this research mean for the field?

Mitral valve repair significantly reduces left ventricular end-diastolic volume, end-systolic volume, mass, and left atrial volume parameters in patients with chronic mitral regurgitation. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

Q: What question did this study set out to answer?

To evaluate structural and functional changes in left-sided cardiac chambers using cardiac magnetic resonance imaging in patients with chronic mitral regurgitation after mitral valve repair.

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Key result

Mitral valve repair reduces LV and LA volumes and LV mass postoperatively.

P<0.01
n=21

Why the study?

The study aimed to evaluate the structural and functional changes of left-sided cardiac chambers by CMRI in patients with chronic mitral regurgitation after mitral valve repair.

Does mitral valve repair improve left atrial and left ventricular structural and functional parameters measured by CMRI in patients with chronic mitral regurgitation?

Population

21 patients with chronic mitral regurgitation and normal LV function undergoing MVR

Comparison

Postoperative vs preoperative CMRI assessment

Design

Observational cohort study

Authors

YHYoshihiro HayataNara Medical University NSNoriyoshi SawabataToyo Institute of Food Technology TATakehisa AbeHokkaido University Hospital

Discussion

Member takes

Implication

Associated with reverse remodeling on CMRI after mitral valve repair; extends echo data but leaves open functional and outcome benefits in chronic MR.

Key Points

To evaluate structural and functional changes in left-sided cardiac chambers using cardiac magnetic resonance imaging in patients with chronic mitral regurgitation after mitral valve repair.
Evaluated pre- and postoperative left atrial and left ventricular functional parameters via cardiac magnetic resonance imaging.
Selected a subset of 21 patients with normal baseline left ventricular function from a total cohort of 103 patients who underwent mitral valve repair.
Left ventricular end-diastolic volume, end-systolic volume, and mass decreased significantly postoperatively (p<0.01), while left ventricular ejection fraction showed a downward trend.
Left atrial volume parameters demonstrated significant postoperative reductions (p<0.01).
Postoperative conduit function positively affected left ventricular filling volume (p<0.01), but booster pump function showed no significant effect (p=0.01).

Study Design

Type

Cohort (n=21)

Structured PICO

Does mitral valve repair improve left atrial and left ventricular structural and functional parameters measured by CMRI in patients with chronic mitral regurgitation?

Population

21 patients with chronic mitral regurgitation and normal left ventricular function who underwent mitral valve repair, evaluated pre- and postoperatively by CMRI.

Exposure

Mitral valve repair (MVR)

Comparator

Preoperative baseline (intra-patient comparison)

Outcome

Structural and functional changes of left atrial (LA) and left ventricular (LV) chambers assessed by cardiac magnetic resonance imaging (CMRI)surrogate

Main Result

p-value: p=<0.01

Mitral valve repair in patients with chronic mitral regurgitation and normal LV function leads to significant reductions in LV and LA volumes and LV mass as assessed by CMRI.

Cite This Study

Hayata et al. (2020) conducted a cohort in Chronic mitral regurgitation (n=21). Mitral valve repair vs. Preoperative baseline was evaluated on Structural and functional changes of left-sided cardiac chambers (LV and LA volumes and mass) (p=<0.01). Mitral valve repair significantly reduced LV end-diastolic volume, LV end-systolic volume, LV mass, and LA volume parameters postoperatively (p<0.01).

synapsesocial.com/papers/6aa87588090a71b0dfe62b63 https://doi.org/10.21873/invivo.12118

Topics

Mitral valve intervention

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Implication

Associated with reverse remodeling on CMRI after mitral valve repair; extends echo data but leaves open functional and outcome benefits in chronic MR.

Improvement in Left Cardiac Function Following Mitral Valve Repair: Analyses Based on Cardiac Magnetic Resonance Imaging

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Topics

Improvement in Left Cardiac Function Following Mitral Valve Repair: Analyses Based on Cardiac Magnetic Resonance Imaging

Discussion

Member takes

Implication

Key Points

Study Design

Structured PICO

Main Result

Cite This Study

Also Consider

Topics

Also Consider