外科的左心耳閉鎖術後の左心耳残遺の管理
Anish K Desai1, Jeffrey Chidester1, Olivia Ondigi1
1Division of Cardiovascular Medicine, University of Virginia, Charlottesville, Virginia, USA.
JACC. Case reports
|February 5, 2026
まとめ
不完全な外科的左心耳閉鎖術(LAAO)には慎重な管理が必要である。カテーテル治療および内科的治療戦略は、残遺左心耳の問題に対処でき、画像診断が治療方針の決定を導く。
科学分野:
- 循環器病学
- 介入循環器病学
- 医療機器技術
背景:
- 心房細動(AF)患者には脳卒中予防のために抗凝固療法が必要であるが、治療不耐容が一般的である。
- 外科的左心耳閉鎖術(LAAO)は、AF患者における脳卒中予防戦略の代替手段を提供する。
- 外科的LAAO後の不完全閉鎖は、残遺左心耳(LAA)の開存につながり、管理上の困難を引き起こす可能性がある。
研究 の 目的:
- 外科的LAAO後の残遺左心耳の2例を提示する。
- 不完全な外科的LAAOの管理上の課題と治療選択肢について議論する。
- 外科的LAAOを受けた患者におけるフォローアップ画像診断の重要性を強調する。
主な方法:
- 外科的LAAO(AtriClip)後の残遺左心耳を有する2例の患者に対する症例シリーズ提示。
- 出血リスクや既往歴を含む患者の併存疾患の評価。
- 残遺左心耳を確認するための診断画像(コンピューター断層撮影)のレビュー。
- カテーテル治療によるLAAOや内科的治療を含む、その後の介入の記述。
主要な成果:
- 症例1:外科的LAAO後に貧血と出血を呈した81歳男性は、残遺左心耳に対してカテーテル治療によるLAAOで良好な結果を得た。症例2:脳卒中の既往と出血リスクの高い84歳女性は、残遺左心耳を呈し、抗凝固療法およびカテーテル治療が不可能であった。両症例ともに、外科的LAAOにおける不完全閉鎖が確認された。
結論:
- 不完全な外科的左心耳閉鎖は、特有の臨床的課題をもたらす。
- カテーテル治療によるLAAOや内科的治療を含む管理戦略は、個々の患者の解剖学的構造や併存疾患に合わせて調整する必要がある。
- 外科的閉鎖後の残遺左心耳の開存を検出するためには、定期的なフォローアップ画像診断が不可欠である。
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