Summary

経皮的僧帽弁修復時のエコー誘導のステップワイズアプローチ

Published: October 16, 2021
doi:

Summary

このプロトコルは経カテーテル僧帽弁修理の間にリアルタイムの心エコーの指導を行う方法を詳しく示す。基本的な見解と必要な測定値は、手順の各段階について説明されています。

Abstract

僧帽弁の経皮経皮的な経カテーテルの端から端への再建は、外科的リスクの高い患者における重度の症候性僧帽弁逆流に対する安全で確立された治療法である。透視法に加えて心エコーのガイダンスは、標準であり、標準化された技術を使用して行われるべきである。

この記事では、ビュー、測定、および手順中に発生する可能性のある困難を強調するステップエコーカルディオガイドによる再現可能なステップを説明します。

この記事では、手順の各ステップ、特に2Dと3Dイメージングの間の好みについて、詳細で時系列の心エコービューを提供します。必要に応じて、脈波、連続波および色ドップラー測定が記載される。さらに、経皮的エッジツーエッジ修復手順の間に僧帽弁逆流の定量化に関する公式な勧告がないため、僧帽リーフレットとデバイス展開後の心エコー定量のためのアドバイスも含まれています。さらに、この記事では、処置中に合併症の可能性を予防し、対処するための重要な心エコービューを扱っています。

経カテーテル僧帽弁修復中の心エコーガイダンスは必須です。構造化されたアプローチは、介入者とイメージャーのコラボレーションを改善し、安全で効果的な手順のために不可欠です。

Introduction

僧帽弁逆流(MR)は、ヨーロッパで弁の手術のための2番目に頻繁な適応症である 1.治療を受けていないと、重度の心不全や生活の質が低下する可能性があります2,3,4.経皮的僧帽弁修復(PMVR)はカテーテルベースの技術であり、A2とP2ホタテ5を接続して僧帽修復するアルフィエリステッチの外科方法を模倣する。高い外科的リスクを有する患者に対して、この技術は、重度のMR.いくつかのレジストリからのデータを治療するための低侵襲的アプローチを提供し、試験は、MitraClip手順、経カテーテル僧帽弁修復療法、効果的かつ安全な方法6、7、8、9であることを示している。2019年には、同様の装置であるPASCAL経カテーテル弁修理システムが市場に導入されました。これは、重症MR10患者の治療における実現可能性と許容可能な安全性を示している。PMVRの持続時間と成功は、個々のオペレータのスキルと経験11に依存します。透視検査のみで行うことができる経皮的経弁置換術(TAVR)のような他の経皮的技術とは対照的に、PMVRは心エコーガイダンス12、13を必要とする。

この記事では、測定、MRの手続き内定量化の提案、手順ごとの合併症を防ぐための重要な見解など、PMVR中の心エコーのアプローチを段階的に説明します。

Protocol

このプロトコルは、当社の機関の人間研究倫理委員会のガイドラインに従っています。 1. 介入前の評価 経中隔穿刺前の心膜滲出を除外する。小さい心膜滲出液が存在する場合、右心室(RV)、中食右心室流出図、および長軸(LAX)ビューに焦点を当てた4チャンバー(4Ch)ビューの最大エンド拡張期エコールセント空間を測定する。 左上肺静脈(LUPV)の脈波ドップラ?…

Representative Results

経皮的な端から端への弁の修理は、症候性の重篤なMRを有する手術の対象外の患者における外科弁の修復または置換に代わるものである。MitraClipの最初の臨床応用は、血管内弁エッジツーエッジ修復研究I(EVERESTI)14試験で調査された。他の多くの試験は、症状の改善だけでなく、病院の死亡率および有害事象(アクセスEU、TRAMI、EVERESTII)15、16、17<sup cla…

Discussion

PMVRのエコーガイダンスは安全な方法です。心エコー検査による合併症は起こり得るが、重大な損傷を引き起こすことはほとんどない。それにもかかわらず、食道病変は経食道心エコー検査を行った後に可能である。この発生率は、介入34の短い期間で減少する。それどころか、経カテーテルのエッジツーエッジ僧帽弁修復に関連するいくつかの合併症は、35,36</…

Disclosures

The authors have nothing to disclose.

Acknowledgements

ドロテア・シューレン氏の技術ビデオサポートに感謝します。

Materials

EPIQ 7 Ultrasound System Philips US218B0542 Cardiac Ultrasound Machine
X8-2t xMATRIX 3D-TEE probe Philips B34YYK TEE-probe
Sheath 6F 25 cm Merit Medical B60N25AQ Sheath
Dilator 16 F Abbott 405544 Dilator
BRK-1 transseptal needle 71 cm St. Jude Medical ABVA407201 Transseptal Needle
Swartz Lamp 90° St. Jude Medical 407356 Transseptal Guiding Introducer Sheath
Amplatz super stiff Kook Medical 46509 Wire
Steerable Guide Catheter Abbott SGC0302 Steerable Guide Catheter
MitraClip NTR Delivery System Abbott CDS0602-NTR Clip Delivery System
MitraClip NTR Bundle Abbott MSK0602-NTR Device

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Gatti, A., Krieger, K., Seidel, M., Röttgen, A., Bruch, L. A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair. J. Vis. Exp. (176), e62053, doi:10.3791/62053 (2021).

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