March 3, 2026Open Access

Chimney Mitral Valve Replacement for Mitral Stenosis with Severe Mitral Annulus Calcification

Key Points

The chimney technique successfully replaced the mitral valve without complications after 14 months.
Patient had severe mitral stenosis and significant annulus calcification requiring innovative intervention.

Structured PICO

Population

72-year-old woman with severe aortic stenosis and severe mitral stenosis complicated by severe mitral annulus calcification, with a history of dialysis, diabetes, and arteriosclerosis obliterans (n=1).

Intervention

Mitral valve replacement using the chimney technique and aortic valve replacement.

Outcome

Valve function and paravalvular leakage at 14 months postoperatively.

Chimney mitral valve replacement appears to be a safe and useful surgical option for patients with mitral stenosis and severe mitral annular calcification, avoiding the risks of calcification resection.

Abstract

症例は既往に透析，糖尿病，閉塞性動脈硬化症がある72歳女性．経胸壁心エコーで重症大動脈弁狭窄症および重症僧帽弁狭窄症を認めた．僧帽弁は両尖ともに石灰化し，可動性が低下していた．また後尖から後交連にかけて著明な弁輪の石灰化を認めた．石灰化を切除することでの致命的な合併症を懸念し，chimney techniqueを用いた僧帽弁置換術および大動脈弁置換術を行った．術後14カ月が経過するが弁の動きに問題なく弁周囲逆流も認めなかった．今回施行したchimney MVRは重度の僧帽弁輪石灰化を伴う僧帽弁狭窄症に対し安全で有用な方法と考えられた．

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Cite This Study

Arakaki et al. (Thu,) studied this question.

synapsesocial.com/papers/69a75fffc6e9836116a2c649 https://doi.org/https://doi.org/10.4326/jjcvs.55.11

Discussion

Journals

Japanese Journal of Cardiovascular Surgery

Institutions

University of the Ryukyus University Hospital

References and Citations

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