シャドーイング練習: SVINutes: Super Large Bore Thrombectomy - 動画で英語スピーキングを学ぶ
レッスンを作成中...
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Well hi, it's a real treat to be with you here today
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and talk to you about super large borothrombectomy and why you ought to be including these tools into your arsenal against stroke.
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I'm Sunil Sheth, I'm an associate professor at UT Health, vascular interventional neurology.
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So what is super large borothrombectomy?
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Here we're talking about aspiration using 88 inch diameter catheters or greater.
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The whole theory behind this approach is that these are catheters that are sized to match your target vessel.
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So you can see here the sizes of the different vessels
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that we approach and the most common occlusion that we face in the world of LVO is M1 occlusions.
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88 catheters will match
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that outer diameter to the vessel much better than any of the other catheter shapes and sizes that we have.
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Why is vessel matching so important.
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First is this concept of flow arrest, stopping enterograde flow and preventing distal embolization.
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It also, with larger inner diameter, is going to increase your aspiration force.
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This means you'll have more effective thrombectomy and then with that have less likelihood of distal embolization.
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So overall that translates to better first-pass reperfusion and that's really the target of every thrombectomy approach is improving that first-pass
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re-canalization and in in vitro studies large-bore aspiration has shown to do that.
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So as you put the catheter into the vessel you not only stop intergrade flow substantially
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but once you turn on aspiration the flow reverses and this is going to prevent dislembolization and also retain the clot
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in a much better fashion.
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So with in vitro data we have moved on to in vivo studies
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and if we look So if you look at how thrombectomy has changed over time, in the bad old days of mercy, well, it didn't really work,
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but really in the last 10 years we're talking about 2015
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to 2024 first pass effect has really languished in this 20 to 30 percent range where although we get bigger
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and bigger aspiration catheters going up to the 070 range the
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first pass effect has not substantially improved since the early days of stent retrievers back in 2015.
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So we need a step function we need a real step up in our performance
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and that's where super large has come in we want to get above at least 60% first pass effect.
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We are now living in a world where we actually have randomized and prospective trial data showing that we are there.
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This was one trial that was presented in the summer of 2025 from the perfuse company in the MARS trial.
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This is their primary efficacy data and as you can see here first pass effect with TIKI 2C 3 or greater.
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So this is not the usual 2B or greater, but 2C or greater, 61% with their millipede system.
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And in the M1, again, where you have vessel matching, 77%.
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These are numbers we have never seen before in rigorously collected prospective clinical trial data.
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Similarly, from the Route 92 group,
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the Summit Max trial was a randomized trial comparing their device against a 70 diameter catheter 74 and significantly better reperfusion results.
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So just to summarize, we are now living in the world of super large-bore thrombectomy.
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Super large-bore thrombectomy is the first real improvement on first-pass effect
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we've ever had in the last decade since we've been doing thrombectomy.
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So it's not a question of should you be doing thrombectomy, it's with super large bore catheters is
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if you want to provide the best care for your patients you need start including these tools into your arsenal.
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Thank you and appreciate this opportunity.
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このレッスンの語彙とスピーキングのポイント
このC1レベルのスピーキングレッスンは、動画「SVINutes: Super Large Bore Thrombectomy」を教材にしています。 繰り返し出てくる語は次のとおりです：catheter, thrombectomy, pass, vessel, trial。 この動画には、シャドーイング用の文が41文、単語が603語あります。 音声の長さは3:38です。 話す速さは1分あたり約166語で、日常会話に近い自然なペースです。 英語の頻出3,000語に含まれる単語は81%だけなので、語彙は難しめです。
この動画の重要語彙
動画の中で特に難しい単語12語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| catheter 名詞 | /ˈkæθɪtɚ/ | カテーテル |
| aspiration 名詞 | /ˌæspəˈɹeɪʃən/ | 希望 |
| diameter 名詞 | /daɪˈæmɪdɚ/ | 直径 |
| substantially 副詞 | 少なからず | |
| languish 動詞 | /ˈlæŋ.ɡwɪʃ/ | 元気がなくなる |
| millipede 名詞 | /ˈmɪləpid/ | ヤスデ, 馬陸 |
| neurology 名詞 | /n(j)ʊ(ə)ˈɹɒləd͡ʒi/ | 神経学 |
| retriever 名詞 | /ɹiˈtɹivəɹ/ | レトリバー |
| summarize 動詞 | /ˈsʌməˌɹaɪz/ | 要約する |
| efficacy 名詞 | /ˈɛf.ɪ.kə.si/ | 有効性 |
| likelihood 名詞 | /ˈlaɪklihʊd/ | 可能性 |
| translate 動詞 | /tɹænzˈleɪt/ | 訳す, 翻訳する |
この動画の文法
話し手がよく使っている文型を、動画の実際の表現とともに紹介します。
| 文型 | 動画での表現 |
|---|---|
| 現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している | has shown · have moved · has changed |
| 受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる | are sized · was presented |
注意したい発音
話し手はI'm, we're, we'veなど、短縮形や弱形を8回使っています。聞こえたとおりの短い形で発音しましょう。
- 「sh」と「zh」の音: aspiration /ˌæspəˈɹeɪʃən/, occlusion /əˈkluː.ʒən/, canalisation /ˌkænələˈzeɪʃən/, interventional /ˌɪn.təɹˈvɛn.ʃə.nəl/, languish /ˈlæŋ.ɡwɪʃ/
- 長い単語（アクセントの位置に注意）: aspiration /ˌæspəˈɹeɪʃən/, diameter /daɪˈæmɪdɚ/, canalisation /ˌkænələˈzeɪʃən/, interventional /ˌɪn.təɹˈvɛn.ʃə.nəl/, neurology /n(j)ʊ(ə)ˈɹɒləd͡ʒi/
日本語話者が苦手な音：
- /r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: interventional /ˌɪn.təɹˈvɛn.ʃə.nəl/, neurology /n(j)ʊ(ə)ˈɹɒləd͡ʒi/, translate /tɹænzˈleɪt/
- /v/ — /b/ にならないように、上の歯を下唇に当てる: prospective /pɹəˈspɛktɪv/, interventional /ˌɪn.təɹˈvɛn.ʃə.nəl/, retriever /ɹiˈtɹivəɹ/, vascular /ˈvæskjələ/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: perfuse /pəɹˈfjuːz/, efficacy /ˈɛf.ɪ.kə.si/
この動画での練習方法
- まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
- まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
- 自分の声を録音して元の音声と比べます。catheter, aspiration, diameterなどの単語に特に注意しましょう。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。