A commentary on CREST-2 sets out what the trial changed. In patients with high-grade asymptomatic carotid stenosis, carotid artery stenting added to intensive medical management reduced stroke risk compared with intensive medical management alone. That is a different answer from the one most neurologists have been giving for a decade, during which improving medical therapy steadily eroded the case for intervening in asymptomatic disease.
The qualifications carry most of the weight. The author is explicit that patient selection and operator skill determine whether the trial result reproduces in practice — a procedural benefit measured in a trial with credentialed operators does not transfer to a unit with a higher periprocedural complication rate. Intensive medical management is also not static; the comparator will keep improving.
For the clinic, this restores stenting as an option to discuss rather than one to discount, and makes the discussion a shared one. The concrete question to answer before offering it is local: what is your centre's periprocedural stroke and death rate for asymptomatic carotid stenting, and do you actually know it? If not, that is the number to find before the next conversation with a patient.
- Know your own centre's periprocedural complication rate before offering stenting for asymptomatic disease
- Confirm intensive medical management is genuinely in place — that was the comparator, not usual care
- Frame this as shared decision-making; the absolute benefit in an asymptomatic patient is modest
- Degree of stenosis alone does not select patients; life expectancy and competing risks matter more here than in symptomatic disease
Why it matters
A decade of advice that asymptomatic carotid stenosis is a medical problem now has a trial arguing otherwise.
Don't overread it
This is a commentary on a trial rather than new data, and the benefit depends on operator performance that varies by centre.
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