Ocular pneumoplethysmography as diagnostic aid in carotid stenosis

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dc.contributor.authorVan Der Merwe D.M.
dc.contributor.authorGeldenhuys J.J.
dc.contributor.authorHuman H.J.
dc.date.accessioned2011-05-15T16:18:08Z
dc.date.available2011-05-15T16:18:08Z
dc.date.issued1981
dc.description.abstractThe ocular pneumoplethysmograph as developed by Gee was evaluated for its accuracy in demonstrating the presence of stenosis in the internal carotid artery. An initial study on 30 Chacma baboons showed that it was very reliable in demonstrating narrowing of 70% or greater of the internal carotid artery. In its clinical application 3 studies were done: The first group of 100 patients were all asymptomatic regarding cerebral ischemia. 23 had a murmur over the carotid artery and of these 57% had an ipsilaterally positive OPG-Gee test. In the 77 without a carotid murmur, 32% had a positive OPG-Gee test. Of 25 patients who had a history of cerebral apoplexy, 6% had a positive OPG-Gee test on the side of the cerebral lesion. 50 patients were referred for an OPG-Gee test because of suspected cerebral ischemic episodes. Half of these had a positive OPG-Gee test, but if a carotid murmur was present, 82% had a positive OPG-Gee test. In 34 cases with a positive OPG-Gee test a carotid arteriogram was obtained. In all but one case this confirmed the presence of a stenosis in the common or internal carotid artery, giving an incidence of 3% false positive findings in this series.
dc.identifier.citationSouth African Journal of Surgery
dc.identifier.citation19
dc.identifier.citation1
dc.identifier.issn00382361
dc.identifier.urihttp://hdl.handle.net/10019.1/14528
dc.subjectanimal experiment
dc.subjectape
dc.subjectcarotid arteriography
dc.subjectcarotid artery obstruction
dc.subjectdiagnosis
dc.subjectgreat blood vessel
dc.subjectmajor clinical study
dc.subjectmethodology
dc.subjectoculoplethysmography
dc.subjectperipheral vascular system
dc.subjectadult
dc.subjectanimal
dc.subjectarticle
dc.subjectbaboon
dc.subjectbrain ischemia
dc.subjectcarotid artery disease
dc.subjecthuman
dc.subjectinternal carotid artery
dc.subjectophthalmic artery
dc.subjectphysiology
dc.subjectplethysmography
dc.subjectretrospective study
dc.subjectstenosis, occlusion and obstruction
dc.subjectAnimal
dc.subjectBrain Ischemia
dc.subjectCarotid Artery Diseases
dc.subjectCarotid Artery, Internal
dc.subjectConstriction, Pathologic
dc.subjectEnglish Abstract
dc.subjectHuman
dc.subjectMiddle Age
dc.subjectOphthalmic Artery
dc.subjectPapio
dc.subjectPlethysmography
dc.subjectRetrospective Studies
dc.titleOcular pneumoplethysmography as diagnostic aid in carotid stenosis
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