Clinical Challenges in Vascular Surgery: Asymptomatic Carotid Artery Stenosis
Behind The Knife: The Surgery Podcast
Behind The Knife: The Surgery Podcast
4.8 • 1.4K Ratings
🗓️ 7 May 2026
⏱️ 33 minutes
🧾️ Download transcript
Summary
For decades, a tight carotid stenosis felt like a ticking time bomb — a plaque waiting to throw an embolus and cause the next stroke. We were taught that severe narrowing meant surgery, and trials like ACAS and ACST-1 seemed to prove it. But medicine has changed. Statins, antiplatelets, tighter blood pressure control, even PCSK9 and GLP-1 therapies have quietly slashed stroke risk, and now newer data from CREST-2 suggest that for many asymptomatic patients, the knife — or the stent — may not add much at all. So if modern medical therapy works better than ever… who actually benefits from intervention anymore? Today, we unpack the evidence, the controversies, and how to counsel the patient who feels perfectly fine but has high-grade stenosis.
Hosts: Carolyn Judge, Andrew Huang, Luciano Delbono, Frank Davis, Robert Beaulieu
Institution: University of Michigan, Department of Surgery, Section of Vascular Surgery
Learning objectives:
- Describe how modern intensive medical therapy has transformed the natural history of asymptomatic carotid stenosis and explain why contemporary patients experience substantially lower annual stroke risk than those in earlier eras.
- Interpret and compare the results of landmark trials—including ACAS, ACST-1, and CREST-2—to assess the relative benefits of medical therapy, endarterectomy, and stenting.
- Apply current evidence and guideline recommendations to patient care by selecting which asymptomatic patients are most likely to benefit from carotid revascularization versus optimized medical therapy alone.
References:
SVS Guidelines:
Brook, R. D., et al. (2022). Society for Vascular Surgery clinical practice guidelines for management of extracranial carotid artery disease. Journal of Vascular Surgery, 75(1), e1–e67. https://doi.org/10.1016/j.jvs.2021.09.031
CREST (1)
Brott, T. G., Hobson, R. W., Howard, G., et al. (2010). Stenting versus endarterectomy for treatment of carotid-artery stenosis. New England Journal of Medicine, 363(1), 11–23. https://doi.org/10.1056/NEJMoa0912321
CREST-2
Brott, T. G., Howard, G., Fong, P., et al. (2024). Randomized trial of carotid artery stenting or carotid endarterectomy vs best medical therapy for asymptomatic carotid stenosis: CREST-2 results. [Manuscript in preparation]. ClinicalTrials.gov Identifier: NCT02089217. Retrieved from https://clinicaltrials.gov/ct2/show/NCT02089217
ACST-1
Halliday, A., Mansfield, A., Marro, J., et al. (2004). Randomised trial of carotid artery surgery for asymptomatic stenosis. Lancet, 363(9420), 1491–1502. https://doi.org/10.1016/S0140-6736(04)16153-1
ACST-2
Halliday, A., Bulbulia, R., Bonati, L. H., et al. (2021). Carotid artery stenting versus carotid endarterectomy in patients with asymptomatic carotid stenosis (ACST-2): A randomised trial. Lancet, 398(10291), 1065–1073. https://doi.org/10.1016/S0140-6736(21)01980-1
ACAS
Executive Committee for the Asymptomatic Carotid Atherosclerosis Study. (1995). Endarterectomy for asymptomatic carotid stenosis. JAMA, 273(18), 1421–1428. https://doi.org/10.1001/jama.1995.03520420033036
Sponsor URL: https://www.goremedical.com/
Please visit https://behindtheknife.org to access other high-yield surgical education podcasts, videos and more.
If you liked this episode, check out our recent episodes here: https://behindtheknife.org/listen
Behind the Knife Premium: https://behindtheknife.org/premium
Oral Board Review: https://behindtheknife.org/oral-board
Oral Board Simulator: https://behindtheknife.org/oral-board/simulator
General Surgery Oral Board Review Course: https://behindtheknife.org/premium/general-surgery-oral-board-review
Trauma Surgery Video Atlas: https://behindtheknife.org/premium/trauma-surgery-video-atlas
Dominate Surgery: A High-Yield Guide to Your Surgery Clerkship: https://behindtheknife.org/premium/dominate-surgery-a-high-yield-guide-to-your-surgery-clerkship
Dominate Surgery for APPs: A High-Yield Guide to Your Surgery Rotation: https://behindtheknife.org/premium/dominate-surgery-for-apps-a-high-yield-guide-to-your-surgery-rotation
Vascular Surgery Oral Board Review Course: https://behindtheknife.org/premium/vascular-surgery-oral-board-audio-review
Colorectal Surgery Oral Board Review Course: https://behindtheknife.org/premium/colorectal-surgery-oral-board-audio-review
Surgical Oncology Oral Board Review Course: https://behindtheknife.org/premium/surgical-oncology-oral-board-audio-review
Cardiothoracic Oral Board Review Course: https://behindtheknife.org/premium/cardiothoracic-surgery-oral-board-audio-review
Download our App:
Apple App Store: https://apps.apple.com/us/app/behind-the-knife/id1672420049
Android/Google Play: https://play.google.com/store/apps/details?id=com.btk.app&hl=en_US
Transcript
Click on a timestamp to play from that location
| 0:00.0 | Behind the Night, The Sury |
| 0:11.0 | The Surgery Podcast, relevant and engaging content designed to help you dominate the day. |
| 0:35.3 | Thanks for listening to Behind the Knife. |
| 0:39.3 | For all of those who chose to pursue the pinnacle of surgery, |
| 0:41.4 | vascular surgery, of course. |
| 0:43.0 | We have a course for you. |
| 0:48.0 | Our vascular surgery oral ward review has 72 audio scenarios from carotid stump syndrome to a patient with a AAA and a horseshoe kidney. |
| 0:51.7 | Everything you need to be ready for your vascular rotations and oral boards. |
| 0:55.8 | As an added bonus, your course purchase now comes with access to our new oral board simulator. |
| 1:01.6 | It is a total game changer that lets you run through voice-prompted cases and receive instant |
| 1:06.5 | scoring on your performance. |
| 1:08.5 | Access all of it via the app for on-the-go use. Enjoy the episode and |
| 1:13.4 | dominate the day. Welcome to Behind the Knife Clinical Challenges in vascular surgery. I'm Andrew |
| 1:19.1 | Wong from the University of Michigan. I have with me here, Frank Davis, Robert Bulliou, |
| 1:24.2 | and Luciano del Bono. And today we're addressing asymptomatic carotid artery stenosis. |
| 1:30.1 | So for decades, a tight carotid stenosis felt like a ticking time bomb, like a plaque that's |
| 1:34.6 | waiting to throw an embolice and cause a stroke. For years, physicians were taught that severe |
| 1:39.8 | narrowing meant surgery, with numerous trials such as the ACAS trial, the ACST1, demonstrating |
| 1:46.3 | the benefits of intervention. However, medicine has changed. In the decades since, numerous new |
| 1:53.1 | medications such as statins, anti-platelets, different blood control agents, and PCSK-9, as well as GLP |
| 2:00.0 | 1 therapies, have quietly slashed stroke risk, and now |
| 2:03.6 | even newer data from the Crest 2 trials, has introduced new questions on how to care |
... |
Please login to see the full transcript.
Disclaimer: The podcast and artwork embedded on this page are from Behind The Knife: The Surgery Podcast, and are the property of its owner and not affiliated with or endorsed by Tapesearch.
Generated transcripts are the property of Behind The Knife: The Surgery Podcast and are distributed freely under the Fair Use doctrine. Transcripts generated by Tapesearch are not guaranteed to be accurate.
Copyright © Tapesearch 2026.