Evidence map›Paper›PMID 41739411›Full record

ArticleGeneral thoracic and cardiovascular surgery2026

Changes in the mitral valve annular angles after mitral valve repair for functional mitral regurgitation.

Masahiro Hirano, Norihiko Shiiya, Kenji Kishita, Yuki Takeuchi, Ken Yamanaka, Yuko Ohashi, Kazumasa Tsuda, Naoki Washiyama, Kazuma Okamoto

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Article in General thoracic and cardiovascular surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Masahiro HiranoDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
Norihiko ShiiyaDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan. shiyanor@hama-med.ac.jp.ORCID http://orcid.org/0000-0003-1488-716X
Kenji KishitaDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
Yuki TakeuchiDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
Ken YamanakaDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
Yuko OhashiDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
Kazumasa TsudaDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
Naoki WashiyamaDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.
Kazuma OkamotoDepartment of Surgery 1, Division of Cardiovascular Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Chuo-Ku, Hamamatsu, 431-3192, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesNarrow aorto-mitral and mitral-septal angles have been reported to be associated with cardiovascular events following mitral valve repair. This study aimed to evaluate pre- and postoperative changes in these angles across different MR etiologies.

methodsFrom January 2012 to June 2023, 394 patients underwent mitral valve repair. Of these, 17 patients had atrial functional (AFMR), 42 had ventricular functional (VFMR), and 335 had degenerative mitral regurgitation (DMR); for DMR, 48 cases between July 2021 and June 2023 were included in the study. Changes in parameters of echocardiography, aorto-mitral and mitral-septal angles were evaluated.

resultsAll patients received ring annuloplasty; 9 AFMR patients also underwent Left atrial plication. Aorto-mitral and mitral-septal angles were largest in patients with VFMR preoperatively (p < 0.001) and decreased postoperatively in VFMR and DMR (p < 0.001). In AFMR, changes in these angles were different between those undergoing left atrial plication (increase in these angles) and those not undergoing plication (decrease in these angles) (interaction in repeated measures ANOVA, aorto-mitral p = 0.015, mitral septal p = 0.085).

conclusionPreoperative aorto-mitral and mitral-septal angles were greater in patients with VFMR. Mitral valve repair with ring annuloplasty resulted in decrease in these angles, which was prevented by left atrial plication in AFMR.

Indexed as

Heart Valve Prosthesis ImplantationMitral ValveMitral Valve AnnuloplastyMitral Valve InsufficiencyAgedEchocardiographyFemaleHumansMaleMiddle AgedRetrospective StudiesTreatment OutcomeAorto-mitral angleFunctional mitral regurgitationLeft atrial plicationMitral-septal angleMitral valve repair

Identifiers

PMID41739411

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.