title: Non-invasive evaluation of patients with extracranial to intracranial bypass.
abstract: In selected patients with cerebrovascular insufficiency, an extracranial-intracranial bypass is indicated to increase cerebral blood flow. To assess the effect of this operation upon routine non-invasive testing, 15 patients had oculoplethysmography, carotid phonoangiography and Doppler testing. None of those with a preoperative abnormality were changed after surgery, despite angiographically proven anastomotic patency. Whereas non-invasive tests may correctly identify severe internal carotid stenosis, use of these modalities in their routine form does not predict extracranial-intracranial bypass patency.
mesh_terms: D002340:Carotid Artery Diseases / Q000601:surgery*; D002343:Carotid Artery, Internal; D002539:Cerebral Arterial Diseases / Q000601:surgery*; D002548:Cerebral Revascularization / Q000379:methods*; D002560:Cerebrovascular Circulation; D003251:Constriction, Pathologic; D006801:Humans; D011379:Prognosis