Related Experiment Videos
[Early therapeutic intervention: thromboendarterectomy and percutaneous transluminal angioplasty]
1Servicio de Neurología, Hospital Universitario Virgen del Rocío, Sevilla.
Insights
Internal carotid artery (ICA) occlusion causes stroke, with controversial management. Emergency revascularization may benefit select patients without severe deficits, warranting further study.
Area of Science:
- Neurology
- Vascular Surgery
Context:
- Atherosclerosis-induced internal carotid artery (ICA) occlusion is a common stroke cause.
- Spontaneous ICA occlusion carries high risks of severe neurologic deficit and mortality.
- Current management strategies for ICA occlusion lack proven efficacy in altering morbidity and mortality rates.
Purpose:
- To review the literature on the management of spontaneous internal carotid artery occlusion.
- To evaluate the potential role of acute-phase thromboendarterectomy or percutaneous transluminal angioplasty.
- To identify patient subgroups who may benefit from emergency revascularization.
Summary:
- Emergency revascularization for stroke due to ICA occlusion is debated due to limited benefits and high complication risks.
- Adequate flow restoration is achievable in specific patients with symptomatic, spontaneously occluded ICAs who lack severe neurological deficits or intracerebral hemorrhage.
- Intervention outcomes depend on symptom duration, collateral circulation, and angiographic patterns.
Impact:
- Highlights the need for controlled clinical trials comparing surgical and non-surgical management of ICA occlusion.
- Suggests potential for improved outcomes in carefully selected stroke patients undergoing emergency revascularization.
- Informs clinical decision-making regarding the controversial treatment of acute internal carotid artery occlusion.
Abstract:
Occlusion of the internal carotid artery (ICA) due to atherosclerosis, or more rarely thromboembolism, is a fairly frequent cause of stroke. Spontaneous ICA occlusion is associated with a 40 to 69% incidence of profound neurologic deficit and a 16 to 55% death rate. Management of this entity, however, continues to be controversial, as currently used treatments have not yet been shown to modify morbidity/morbility rate. Acute-phase performance of thromboendarterectomy or percutaneous transluminal angioplasty may play a role in ICA treatment. Emergency revascularization has not generally been considered to benefit stroke patients: clinical improvement is only slight in many cases and the incidence of perioperative complications, particularly brain hemorrhage, is high. Review of the literature, however, demonstrates that adequate restoration of flow is achievable in a subgroup of patients with spontaneously occluded symptomatic ICAs without severe neurological deficit, without decreased level of consciousness and without intracerebral hemorrhage manifest in computed tomography or magnetic resonance images. The outcome of emergency intervention also seems to depend on the duration of symptoms, individual collateral blood flow and the angiographic reflux pattern in the ICA. Given the potential usefulness of these surgical techniques, controlled clinical comparison of operated and non-operated groups seems highly recommendable in spite of the significant difficulties involved.