Limitations of quantitative oculoplethysmography and of directional Doppler ultrasonography in cerebrovascular diagnosis: assessment of an air-filled OPG system.

نویسندگان

  • M D Ginsberg
  • S A Greenwood
  • H I Goldberg
چکیده

500 consecutive patients were evaluated for extracranial disease of the internal carotid arteries by an automated, air-filled, digital oculoplethysmographic system (OPG) of the Kartchner type (Zira) and by supraorbital (SO) and supratrochlear (ST) directional Doppler ultrasonography. Cerebral arteriograms were performed in 58 patients (110 vessels), and OPG timing criteria for detecting hemodynamically significant carotid artery stenosis (60% or greater diameter reduction) were ascertained. Optimal criteria were a delay of one ocular pulse, relative to the other, of greater than 12 msec; and a delay of an ocular pulse, relative to the earlier ear (external carotid) pulse, of greater than 36 msec. These criteria correctly identified 73% of vessels with 0 to 59% stenosis and 76% of vessels with 60 to 100% stenosis. However, in 26% of the vessels, OPG was either inconclusive or inaccurate. Correct diagnosis of bilateral hemodynamically significant carotid artery stenoses was made by OPG in 6 of 9 affected patients. SO Doppler was normal in 70% of vessels with 0-59% stenosis, and abnormal in 75% of vessels with 60-100% stenosis. Corresponding percentages for ST Doppler were 95% and 44%. Abnormal Doppler responses to compression of contralateral facial branches were predictive of intracranial cross-collateralization in only 25% of patients. These results suggest that both quantitative OPG in its present form and directional Doppler studies have serious limitations as non-invasive diagnostic methods.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Use of combined oculoplethysmography, carotid phonoangiography and Doppler in the non-invasive diagnosis of extracranial carotid occlusive disease.

One hundred and eight patients were studied with fluid-filled oculoplethysmography and carotid phonoangiography (OPG-CPA) and by arteriography. Thirty-two patients also had "Doppler evaluation" of supraorbital arterial flow. The OPG-CPA correctly predicted the degree of occlusion in 76% of the involved vessels, including the degree of occlusion of each carotid for each patient (63%). The OPG-CP...

متن کامل

Noninvasive testing for carotid artery stenosis: II. Clinical application of accuracy assessments.

Determination of the specificity, sensitivity, and accuracy of diagnostic tests usually identifies the value of the tests in isolation, but the clinical significance of the findings is less clear. In this study the accuracies of direct continuous wave color-coded Doppler imaging (DDI), periorbital directional Doppler ultrasonography (PDDU), and oculoplethysmography-carotid phonangiography (OPG-...

متن کامل

Noninvasive testing for carotid artery stenosis: I. Prospective analysis of three methods.

Oculoplethysmography-carotid phonoangiography and periorbital directional Doppler sonography are two techniques widely used in the noninvasive evaluation of possible carotid artery disease. Recent advances with sonographic Doppler devices now permit measurement of blood velocities in the extracranial carotid arteries by direct scanning with a color coded Doppler imaging system. A prospective st...

متن کامل

Normal Echocardiographic Findings in Healthy Pigeons

Objective- The purpose of this study was to investigate the feasibility of performing echocardiography in apparently healthy pigeons, and measurement of the quantitative cardiac indices using B-mode and Doppler techniques. Design- Experimental study Animals- Ten apparently healthy pigeons Procedures- Echocardi...

متن کامل

تعیین میانگین سرعت جریان خون شریان مغزی میانی در افراد دیابتیک

    Background & Aim: Diabetes mellitus is one the most prevalent chronic diseases in Iran which has a considerable burden on health system. In addition, hyperglycemia is a well-established independent risk factor for ischemic stroke and the development of microvascular and macrovascular diseases in patients with diabetes. On the other hand, middle cerebral artery is one the most important cere...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Stroke

دوره 12 1  شماره 

صفحات  -

تاریخ انتشار 1981