American Journal of Neuroradiology 21:727-731 (4 2000)
© 2000 American Society of Neuroradiology
ARTICLE
Percutaneous Transluminal Angioplasty and Stenting of the Proximal Vertebral Artery for Symptomatic Stenosis
a From the Department of Neuroradiology Charcot (M.P., L.S., A.W., J.C.), Hôpital de la Salpêtrière, Paris, France; the Department of Radiology (J.-B.M., D.A.R.), Section of Neuroradiology, Geneva University Hospital, Switzerland; the Department of Neurology (G.R.), Hôpital de la Salpêtrière, Paris, France; and the Department of Neurosurgery (I.B.R.), Saint Boniface General Hospital, Winnipeg, Manitoba, Canada.
BACKGROUND AND PURPOSE: Percutaneous transluminal angioplasty (PTA) for significant stenosis involving the origin of the vertebral artery is now a well established treatment for selected patients when posterior cerebral arterial circulation is compromised. Arterial spasm, dissection, and restenosis may occur in some instances, with subsequent hemodynamic compromise. To prevent these potential complications, we combined PTA of the vertebral artery with primary stenting, using coronary stents, in seven patients. We herein present our short- and intermediate-term results.
METHODS: A total of seven lesions affecting the origin of the vertebral artery were treated by primary trans-stenotic coronary stent placement. All patients were symptomatic, fulfilling the general criteria for vertebral artery angioplasty. Patients were followed for up to 36 months after treatment.
RESULTS: All seven lesions were successfully dilated. Residual stenosis was never greater than 20% in diameter. No perioperative complications occurred. Clinical follow-up showed immediate resolution or improvement of symptoms in all patients. One patient's condition deteriorated 15 months after stent placement because of atheromatous stenosis of the prevertebral segment in the ipsilateral subclavian artery.
CONCLUSION: Stent placement to treat significant stenosis involving the origin of the vertebral artery is safe and effective for alleviating symptoms and improving blood flow to the posterior cerebral circulation. Coronary stent design seems to be particularly well suited to cover atherosclerotic lesions of the origin of the vertebral artery. The stent mesh probably prevents elastic recoil and early restenosis after PTA, as it does in coronary arteries.
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