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Carotid stenosis plus occlusion: endarterectomy or bypass?
Archives of Surgery (Chicago, Ill. : 1960)
|February 1, 1980
Summary
Carotid endarterectomy improved ophthalmic systolic pressure in most patients with unilateral carotid occlusion and contralateral stenosis. Shunting is reserved for persistent symptoms post-contralateral surgery.
Area of Science:
- Vascular Surgery
- Cerebrovascular Disease
- Ophthalmology
Background:
- Unilateral internal carotid artery (ICA) occlusion presents a challenge for cerebrovascular surgeons.
- Contralateral ICA stenosis can compromise cerebral perfusion, increasing stroke risk.
- Ophthalmic systolic pressure (OSP) is a key indicator of ocular and cerebral blood flow.
Purpose of the Study:
- To evaluate the impact of contralateral carotid endarterectomy on OSP in patients with unilateral ICA occlusion.
- To determine the necessity of additional procedures like external carotid to internal carotid (EC-IC) shunting.
Main Methods:
- Study included 15 patients with unilateral ICA occlusion and significant contralateral ICA stenosis (≥75% area reduction).
- Ocular pneumoplethysmography (OPG-Gee) was used to measure OSP before and after surgery.
- The primary intervention was endarterectomy of the stenosed contralateral carotid artery.
Main Results:
- Bilateral improvement in OSP was observed in 12 out of 15 patients (80%) post-contralateral endarterectomy.
- This suggests improved hemodynamic status in both hemispheres following the procedure.
- No immediate need for EC-IC shunt was identified in the majority of cases.
Conclusions:
- Contralateral carotid endarterectomy effectively improves ocular hemodynamics in patients with unilateral ICA occlusion and significant contralateral stenosis.
- EC-IC shunt should be considered only for patients experiencing persistent symptoms on the occluded side after contralateral endarterectomy.
- This approach optimizes surgical management and patient outcomes for complex carotid artery disease.