Shadowing Practice: Carotid Artery Stenting - Tips & Tricks - Learn English Speaking with Video

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In this video, we will discuss challenges and difficulty we faced during one of our carotid artery stenting case.
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Patient is 58 year male,
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presented with acute onset of mild weakness of left upper and lower limb.
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He has many risk factors responsible for atherosclerosis like hypertension,
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hypercholestremia, diabetes and he is a chronic smoker.
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MRI brain showed abnormal T2 hyperintensity at coronary later displaying diffusion restriction suggestive of acute infarct.
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This location of infarct suggests deep watershed territory infarct between the perforator arteries and superficial cortical arteries.
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Right carotid angiography showed near total occlusion of right internal carotid artery with poor intracranial flow
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and there is retrograde reformation of the ophthalmic artery via middle meningeal artery collaterals.
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This angiographic findings suggest hemodynamic compromise of right cerebral hemisphere.
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So we plan for carotid artery stenting under embolic protection device in this case.
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The procedure could be divided into following steps.
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Carotid access, measurement and choosing the appropriate carotid stent and filter size,
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pre-dilatation, embolic filter device deployment, stent deployment and post-dilatation.
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These are the hardware we used in this case.
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Safe carotid access is the first step of carotid artery stenting procedure.
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Always look for unfavorable arch in CT angiography images.
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We placed 8F short sheet at groin and taken 6F long sheet over diagnostic catheter under fluoroscopy to right common carotid artery.
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By this technique we could avoid the exchange maneuver.
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This is the right common carotid artery injection via long sheet.
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We obtained measurement.
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Based on our measurement we choose 6 to 8 millimeter tapered stent from abort
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and we also use a smaller size of available embossed shield.
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As the stenosis is very tight
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and crossing profile of filter device is larger we plan to pre-dialect the stenosis using the coronary balloon.
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We use 1.4 BMW coronary wire and 2.5 mm size of the coronary balloon to dilate the stenosis.
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There is significant improvement of the lumen after the angioplasty.
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Now we cross the lesion using O.1.4 bare wire of the filter device.
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It has a 3 cm distal radio opaque tip which we kept at C1 vertebral level.
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Now AmboShield filter device is taken over the O14 wire.
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Filter is deployed at C2 vertebral level.
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Filter device should be placed in the straight segment of the carotid artery
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and should be more than 2 cm distal to the distal landing zone of carotid stent.
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Filter has migrated proximally to the level of stenosis during removal of its delivery catheter.
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To understand proximal migration of the filter device,
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we need to know the filter design.
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Ambushil filter device has umbrella like nylon membrane and nitinol frame.
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This nylon membrane has multiple micropores to allow the blood perfusion and to trap the embolic material.
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It has two radiopic markers at the proximal and the distal end.
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AmboShield filter device is a monoreal system pre-loaded on O14 wire.
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AmboShield is not fixed on this wire,
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it is freely movable on this wire and because of this there is a risk of intracranial dislodgement of this filter device.
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To avoid any intracranial migration of AmboShield filter device,
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there is a focal step design on the bare wire distal to the filter.
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This focal step is 019 and which will act as a distal limit of the filter device.
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So when this distal 019 step at the bare wire is in contact with the distal marker of the filter device,
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it might drag filter proximally
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if the bare wire is pulled by mistake during the exchange maneuver and this is exactly what had happened in this case.
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We gently push the filter device upward using the retrieval catheter.
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Now stent delivery catheter was taken over O14 bare wire.
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Distal nose of the stent delivery catheter has further pushed the filter device to the desired location.
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Precise location of stent was confirmed by guide catheter injection.
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was deployed and delivery catheter was removed.
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Check angiography showed residual waste so we performed angioplasty of the residual stenosis using 4.5 mm coronary balloon.
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Only after angioplasty, there was complete occlusion of internal carotid artery.
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The possibilities could be that the filter device might have occluded due to the trapped embolic materials
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or acute distant thrombosis or carotid artery dissection and vasospasm.
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We immediately checked ACT which was within desired level.
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We repeated 1000 units of heparin bolus.
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We gave loading dose of agrastat via guide catheter and started IV infusion.
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We also performed aspiration of the thrombus using coronary aspiration catheter.
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After all these efforts, check angiography showed some restoration of the flow in the internal cuted artery and across the filter.
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So we decided to retrieve the filter device.
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While retrieving the filter device,
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we only partially engaged the portion of the filter device inside the retrieval catheter to prevent escape of any trapped emboli.
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After removing the filter device,
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complete flow is restored in the internal carotid artery and the stent.
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Gross examination of the filter device showed trapped embolic materials.
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So we could conclude
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that the sudden occlusion of the carotid artery after balloon angioplasty
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is most likely due to release of lot of embolic materials
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which were trapped by the filter device and causing the complete flow arrest across the carotid artery.
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Once we remove this filter device the flow is restored.
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Final angiogram showed complete revascularization of the internal carotid artery and good restoration of the intracranial circulation.
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This also imply the importance of use of filter device during carotid artery stenting procedure.

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Woordenschat en spreektips bij deze les

Deze spreekles op niveau C2 is gebaseerd op de video “Carotid Artery Stenting - Tips & Tricks”. Deze woorden komen het vaakst terug: filter, device, carotid, artery, catheter. Deze video bevat 75 zinnen en 907 woorden om na te spreken. Het gesproken deel duurt 7:26. De spreker praat in een gelijkmatig tempo van ongeveer 122 woorden per minuut, prettig om te shadowen. Slechts 63% van de woorden hoort bij de 3.000 meest gebruikte Engelse woorden, dus de woordenschat is pittig.

Belangrijke woorden in deze video

De 15 moeilijkste woorden uit de video, met uitspraak en betekenis:

WoordUitspraakBetekenis
carotid zelfstandig naamwoord/kəˈɹɑt.ɪd/halsslagader
artery zelfstandig naamwoord/ˈɑɹ.təɹ.i/slagader, arterie
catheter zelfstandig naamwoord/ˈkæθɪtɚ/katheter
distal bijvoeglijk naamwoord/ˈdɪs.təl/distaal
coronary bijvoeglijk naamwoord/ˈkɔɹənɛɹi/coronair
stenosis zelfstandig naamwoord/stəˈnoʊ.sɪs/adervernauwing
angioplasty zelfstandig naamwoord/ˈæn.d͡ʒi.əʊ.plæs.ti/dotterbehandeling
balloon zelfstandig naamwoord/bəˈlun/ballon
infarct zelfstandig naamwoord/ɪnˈfɑɹkt/infarct
acute bijvoeglijk naamwoord/əˈkjut/kort
measurement zelfstandig naamwoord/ˈmɛʒ.ə.mənt/meting
nylon zelfstandig naamwoord/ˈnaɪlɑn/nylon
vertebral bijvoeglijk naamwoord/vɚˈti.bɹəl/wervel-
residual bijvoeglijk naamwoord/ɹɪˈzɪd͡ʒ.u.əl/overgebleven, residuair
maneuver zelfstandig naamwoord/məˈnuvɚ/manoeuvre, (veld)oefening

Phrasal verbs die je zult horen

WoordBetekenis
take over werkwoordovernemen

Uitspraak om op te letten

  • De “th”-klanken: catheter /ˈkæθɪtɚ/, atherosclerosis /ˌæθɚoʊskləˈɹoʊsəs/, ophthalmic /ɑfˈθæl.mɪk/, thrombosis /θɹɑmˈboʊsɪs/, thrombus /ˈθrɑmbəs/
  • De klanken “sh” en “zh”: occlusion /əˈkluː.ʒən/, measurement /ˈmɛʒ.ə.mənt/, aspiration /ˌæspəˈɹeɪʃən/, dilatation /ˌdaɪleɪˈteɪʃ(ə)n/, injection /ɪnˈd͡ʒɛk.ʃən/
  • Lange woorden — let op de klemtoon: coronary /ˈkɔɹənɛɹi/, angiography /ˌæn.d͡ʒiˈɑ.ɡɹə.fi/, angioplasty /ˈæn.d͡ʒi.əʊ.plæs.ti/, intracranial /ˌɪntɹəˈkɹeɪniəl/, aspiration /ˌæspəˈɹeɪʃən/

Klanken die Nederlandstaligen lastig vinden:

  • Stemhebbende eindmedeklinker — /b/, /d/, /g/, /z/, /v/ niet verscherpen: carotid /kəˈɹɑt.ɪd/, retrieve /ɹɪˈtɹiːv/, occlude /əˈkluːd/, retrograde /ˈɹɛtɹəˌɡɹeɪd/, suggestive /sə(ɡ)ˈd͡ʒɛs.tɪv/
  • /æ/ — opener dan de Nederlandse “e”: catheter /ˈkæθɪtɚ/, angiography /ˌæn.d͡ʒiˈɑ.ɡɹə.fi/, angioplasty /ˈæn.d͡ʒi.əʊ.plæs.ti/, aspiration /ˌæspəˈɹeɪʃən/, atherosclerosis /ˌæθɚoʊskləˈɹoʊsəs/
  • /g/ — een harde plofklank, geen Nederlandse “g”: angiography /ˌæn.d͡ʒiˈɑ.ɡɹə.fi/, migrate /maɪˈɡɹeɪt/, retrograde /ˈɹɛtɹəˌɡɹeɪd/, suggestive /sə(ɡ)ˈd͡ʒɛs.tɪv/, diagnostic /ˌdaɪ.əɡˈnɑ.stɪk/

Zo oefen je met deze video

  1. Luister de hele video één keer zonder te spreken en noteer de woorden die je niet kent.
  2. Spreek zin voor zin na op normale snelheid en herhaal elke zin tot je ritme gelijk is aan dat van de spreker.
  3. Neem jezelf op en vergelijk met het origineel; let daarbij op woorden als carotid, artery, catheter.

Wat is de Shadowing-techniek?

Shadowing is een wetenschappelijk onderbouwde taalleermethode die oorspronkelijk is ontwikkeld voor professionele tolkentraining en gepopulariseerd door polyglot Dr. Alexander Arguelles. De methode is eenvoudig maar krachtig: je luistert naar native Engelse audio en herhaalt het onmiddellijk hardop — als een schaduw die de spreker volgt met slechts 1–2 seconden vertraging. In tegenstelling tot passief luisteren of grammaticadrills, dwingt shadowing je hersenen en mondspieren om echte spraakpatronen tegelijkertijd te verwerken en te reproduceren. Onderzoek toont aan dat het de uitspraaknauwkeurigheid, intonatie, ritme, verbonden spraak, luisterbegrip en spreekvaardigheid aanzienlijk verbetert — waardoor het een van de meest effectieve methoden is voor IELTS Speaking-voorbereiding en echte Engelse communicatie.

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