Ocular pneumoplethysmography (OPG-Gee) in noninvasive evaluation of carotid artery stenosis.
Carotid artery stenosis can be evaluated noninvasively by ocular pneumoplethysmography (OPG-Gee). This simultaneously measures both ophthalmic artery pressures and is therefore capable of detecting pressure-reducing or hemodynamically significant carotid lesions. An OPG-angiography correlation was made for 200 carotid arteries in 110 patients. Sensitivity, specificity and overall accuracy were 91%, 89%, and 90% respectively, if calculated per artery. On a per patient basis these figures were 94%, 88%, and 91%. Applications of this rapid and simple technique in clinical practice include selection of patients for angiography and carotid endarterectomy, as well as early and late control of the operative results.
D000792:Angiography; D001157:Arterial Occlusive Diseases / Q000175:diagnosis*; D002339:Carotid Arteries / Q000473:pathology*; D006801:Humans; D009880:Ophthalmic Artery; D010991:Plethysmography