Safety of early carotid artery stenting after systemic thrombolysis: a single center experience

Fabrizio Sallustio1, Giacomo Koch, Alessandro Rocco

  • 1Department of Clinical Neurological Sciences, Stroke Unit, Policlinico Tor Vergata, Viale Oxford 81, 00133 Rome, Italy.

Insights

Early carotid artery stenting (CAS) after IV thrombolysis is safe for acute ischemic stroke patients with severe internal carotid artery disease. This approach demonstrated good stent patency and favorable outcomes, suggesting it as a viable secondary stroke prevention strategy.

Area of Science:

  • Neurology
  • Vascular Surgery
  • Interventional Cardiology

Background:

  • Patients with acute ischemic stroke from internal carotid artery (ICA) disease face a high risk of recurrent strokes.
  • Combining intravenous thrombolysis with early carotid artery stenting (CAS) may offer improved secondary stroke prevention.
  • This study evaluates the safety and durability of early CAS in patients with residual ICA stenosis after thrombolysis.

Purpose of the Study:

  • To assess the safety and durability of performing early carotid artery stenting (CAS) after intravenous thrombolysis in patients with acute ischemic stroke and residual internal carotid artery stenosis.
  • To determine the feasibility of this combined treatment approach in a high-risk patient population.

Main Methods:

  • Retrospective analysis of consecutive patients treated with IV rtPA (alteplase) who subsequently underwent early CAS (>24 hours) for residual ICA stenosis (≥70% or <70% with ulcerated plaque).
  • Pre-procedure imaging included MRI and MR angiography; post-procedure imaging included carotid ultrasound and CT angiography.
  • Stroke severity was measured using the NIH Stroke Scale (NIHSS); stent patency and functional outcomes were assessed at 3 and 12 months using ultrasound and the modified Rankin Scale (mRS), respectively.

Main Results:

  • Out of 145 IV rtPA-treated patients, 6 (4%) underwent early CAS. The median age was 76 years, with a median NIHSS of 12 at onset and 7 before CAS.
  • The median time from stroke onset to CAS was 48 hours. All procedures involved a single self-expandable stent and were uneventful.
  • At 12 months, all stents remained patent, and 5 out of 6 patients had favorable functional outcomes (mRS ≤ 2). One patient experienced a recurrent stroke due to new-onset atrial fibrillation.

Conclusions:

  • Early carotid artery stenting (CAS) following IV thrombolysis appears to be a safe and effective option for selected acute ischemic stroke patients with significant internal carotid artery stenosis.
  • This strategy shows promising results in terms of stent patency and functional outcomes, potentially reducing the risk of early stroke recurrence.
  • Further research in larger cohorts is warranted to confirm these findings and establish optimal treatment protocols.

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