Ocular Pneumoplethysmography (OPG-Gee) in Noninvasive Evaluation of Carotid Artery Stenosis

Riles, Thomas S.; Eikelboom, Bert C.; Pauliukas, Povilas; Folcarelli, Patricia; Baumann, F. Gregory; Imparato, Anthony M.
November 1983
Angiology;Nov1983, Vol. 34 Issue 11, p724
Academic Journal
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.


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