nitinol and Ischemic-Attack--Transient

Acute ischemic stroke (AIS) is the third leading cause of death. Arterial stenosis is a common cause of stroke, with a high risk of recurrent stroke. Treatment guidelines for AIS and transient ischemic attack (TIA) are still under debate. Treatment guidelines for progressive stroke or crescendo TIAs do not exist. Percutaneous transluminal angioplasty and stenting (PTAS) is an increasingly attractive treatment option, whose efficacy is yet to be proven. However, stent placement poses both short- and long-term risks such as immediate ischemic events, in-stent stenosis, and stent breakage. Thus the choice of stent type is critical. We report our experience with the LEO + (Balt Extrusion, Montmorency, France) nitinol flexible self-expanding stent for the treatment of progressive cerebrovascular accident or crescendo TIAs.. Twelve patients, presenting with a clinical picture of a crescendo TIA or progressive stroke in evolution not halted by optimal medical care, were treated. Patients had a corresponding major cerebral arterial narrowing and evidence of cerebral infarction on imaging. Patients were followed clinically and radiographically.. Twelve patients 17 to 80 years of age were treated during the study period (20 months). Sixteen nitinol flexible self-expandable stents (LEO +) were placed. All patients showed moderate to substantial improvement in neurologic functions after the procedure.. PTAS should be considered a treatment option in case of progressive stroke or crescendo TIAs coupled with appropriate anatomical findings. This may allow for a substantial improvement in functional and neurologic status.

Topics: Adolescent; Adult; Aged; Aged, 80 and over; Alloys; Female; Humans; Ischemic Attack, Transient; Male; Middle Aged; Neurosurgical Procedures; Stents; Stroke; Treatment Outcome; Young Adult

Carotid stump syndrome is one of the recognised causes of recurrent ipsilateral cerebrovascular events after occlusion of the internal carotid artery. It is believed that microemboli arising from the stump of the occluded internal carotid artery or the ipsilateral external carotid artery can pass into the middle cerebral artery circulation as a result of patent external carotid-internal carotid anastomotic channels. Different pathophysiologic causes of this syndrome and endovascular options for treatment are discussed.

Topics: Aged; Alloys; Angiography, Digital Subtraction; Angioplasty; Carotid Artery Thrombosis; Carotid Artery, Common; Carotid Artery, External; Carotid Artery, Internal; Coated Materials, Biocompatible; Equipment Design; Female; Humans; Intracranial Embolism; Ischemic Attack, Transient; Magnetic Resonance Angiography; Male; Middle Aged; Stents; Syndrome; Ultrasonography, Doppler, Color

Treatment of dissecting pseudoaneurysms of the distal cervical internal carotid artery with preservation of the parent artery by using stents or coils has become routine. Tortuosity remains a significant obstacle to successful endovascular treatment in some cases. We report the use of a stent-coil technique to treat a nonhealing dissecting pseudoaneurysm and associated stenosis with anatomic preservation of a redundant loop involving the stented arterial segment. This was accomplished by using a Neuroform dedicated intracranial stent.

Topics: Adult; Alloys; Aneurysm, False; Aspirin; Carotid Artery, Internal, Dissection; Carotid Stenosis; Combined Modality Therapy; Dominance, Cerebral; Embolization, Therapeutic; Female; Follow-Up Studies; Humans; Ischemic Attack, Transient; Platelet Aggregation Inhibitors; Radiography; Stents