Carotid endarterectomy

Why are we operating?

Coring the stroke-throwing plaque out of the carotid bifurcation, done soon after the warning event, with three cranial nerves watching the field.

Indication: Symptomatic carotid stenosis (TIA or minor stroke with 50-99 percent stenosis), ideally within two weeks of the event.

The operation in 4 steps

1. 01Exposure

   Incision along the sternocleidomastoid; the common, internal and external carotids are exposed and slung, with the hypoglossal and vagus nerves identified.

   Why: The bifurcation is shared real estate: the hypoglossal crosses just above, the vagus lies behind in the sheath, and the marginal mandibular is under the upper flap. Nerve injury here is the operation's commonest complication, not stroke.

2. 02Clamping, and the shunt question

   Heparin, then clamps on internal, common and external carotids; cerebral perfusion is assessed and a shunt placed if the brain needs one.

   Why: The brain must survive on its collateral circle while the artery is open. Whether measured by stump pressure, neuromonitoring, or an awake patient's grip, the question is the same: is the circle of Willis enough, or does this patient need a plastic bypass for twenty minutes?

3. 03The endarterectomy

   Arteriotomy across the stenosis; the plaque is developed in the media's plane and cored out, with the distal intimal step tacked or feathered flush.

   Why: The plane is everything: too shallow leaves plaque, too deep weakens the wall. The distal end-point matters most, because a loose intimal flap in the internal carotid is a dissection waiting for flow.

4. 04Patch closure and restoration of flow

   The arteriotomy is closed, usually with a patch; air and debris are flushed out through the external carotid before internal flow is restored.

   Why: The patch keeps the repaired segment wide. The flow sequence is a ritual with a reason: the first jet of blood carries whatever debris remains, and it is aimed at the face, not the brain.

Danger zones

• Hypoglossal nerve

  High plaques force the dissection up to and past it, and it hides behind a veil of small veins that bleed at the worst moment.

Anatomy you need

Follow the common carotid to its bifurcation, the plaque's favourite address, and note what the internal carotid supplies.

What can go wrong

• Postoperative bleeding

  Tachycardia first, hypotension late; falling urine output; a distending abdomen or rising drain output.

• Surgical-site infection

  Wound erythema, warmth, discharge, and pain out of proportion, typically from postoperative day 4–7.