Purpose and suitability
The aim is to treat a significant carotid narrowing with a stent while minimising the risk of plaque fragments reaching the brain during the procedure. It offers a revascularisation option when conventional endarterectomy is less suitable, so that stroke prevention is not limited to medication alone in high-risk anatomy.
Considerations include:
- Symptomatic or high-grade carotid stenosis
- Anatomy that makes open endarterectomy difficult, such as a very high lesion
- Previous neck surgery or radiotherapy
- Medical conditions that raise open surgical risk
Selection is individualised. For many patients endarterectomy remains the recommended treatment, and for others medication alone is the right course. Carotid endarterectomy remains the standard operation for many patients, and the choice depends on symptoms, anatomy and procedural risk.
Assessment and preparation
Work-up includes carotid ultrasound, CT angiography, brain imaging where indicated, and a careful neurological history. Dual antiplatelet therapy is commonly required before and after stenting, so medication review is essential. Cardiac and kidney risk are assessed, and blood-pressure management is planned in advance.
How the procedure is performed
How flow reversal works
During TCAR, blood is temporarily directed away from the brain through a filtering system and returned via a vein. This reduces the chance of plaque debris travelling to the brain while the stent is inserted. Normal forward flow is restored once the stent is secure.
Standard carotid stenting usually reaches the artery from the groin or wrist with an embolic protection device. In TCAR, the surgeon exposes the common carotid artery through a small neck incision under anaesthesia, establishes flow reversal, treats the narrowing with a balloon when required and deploys the stent. The final approach can be adjusted once imaging is reviewed on the day.
Recovery and follow-up
Blood pressure and neurological status are monitored closely after the procedure, and many patients go home the following day when recovery is uncomplicated. Antiplatelet medication continues, and ultrasound surveillance checks the stent over time. Managing cholesterol, blood pressure and smoking remains central to stroke prevention.
Risks and possible complications
- Stroke or transient ischaemic attack (TIA)
- Bleeding or neck haematoma
- Arterial injury
- Slow heart rate or blood-pressure instability
- Cranial nerve symptoms
- Heart complications
- Stent thrombosis or re-narrowing
- Access-site complications
The procedural risk is always weighed against the reduction in future stroke risk that treatment is expected to provide.
Alternatives and practical considerations
Carotid endarterectomy and medical therapy are the principal alternatives to carotid stenting or TCAR. The appropriate approach depends on recent neurological symptoms, the degree and position of narrowing, previous neck surgery or radiotherapy, the shape of the aortic arch and carotid arteries, and the patient's overall procedural risk.
TCAR uses direct access to the carotid artery through a small neck incision with temporary flow reversal, while transfemoral carotid stenting reaches the artery from the groin. Each technique has different anatomical advantages. The consultation should explain why a stent-based procedure is being considered instead of endarterectomy and how the individual stroke risk compares between options.
Antiplatelet medication before and after treatment is essential unless contraindicated, and follow-up ultrasound checks that the stent remains open. Patients should understand how long medication is required, when normal activity can resume and which symptoms indicate a possible stroke. Any new facial weakness, limb weakness, speech difficulty or visual loss requires immediate care through Triple Zero (000).
Carotid stenting and TCAR at Yarra Vascular Surgeons
Yarra Vascular Surgeons offers comprehensive carotid assessment and both open and endovascular carotid treatment, including TCAR, with the choice of technique based on symptoms, plaque and arch anatomy and medical risk.
Arrange a vascular assessment
Carotid stenting and TCAR provide alternatives to endarterectomy for appropriately selected patients with significant carotid disease. If you or your patient has had recent neurological symptoms, urgent review is appropriate.
