Ultrasonic doppler examination of internal carotid artery stenosis.
نویسندگان
چکیده
منابع مشابه
Intracranial internal carotid artery stenosis.
The advent of EC/IC Bypass surgery has focused attention on selected patients who might benefit from this innovative procedure. There is a poverty of natural history data pertaining to all such lesions. Two centres (Memphis, Tennessee and London, Ontario) pooled their resources to carry out a retrospective review of 58 patients with angiographically-proven intracranial internal carotid artery s...
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A72-year-old manpresented with paroxysmal and transient involuntary movements, or "limb shaking". The attacks occurred alternately from one side of the body to the other and ceased spontaneously. Surface EMG study showed synchronous grouping discharges in multiple limb muscles, being compatible with hemiballism-hemichorea. Cerebral angiography demonstrated marked stenosis of the bilateral inter...
متن کاملPattern difference of reversed ophthalmic blood flow between occlusion and stenosis of the internal carotid artery. An ultrasonic Doppler study.
Reversed ophthalmic blood flow in the occlusions (33 patients) and stenoses (11 patients) of the internal carotid artery (ICA) was examined using the ultrasonic Doppler technique. The Doppler shift frequencies of the blood flow signal were analyzed to obtain their sound spectrogram. In stenosis of the ICA, "presystolic notch" was more frequently observed and "d/S" value (S, d; maximum blood flo...
متن کاملManagement of asymptomatic internal carotid artery stenosis.
Optimal management of patients with asymptomatic carotid artery stenosis remains unclear. Although 2 high-quality randomized clinical trials demonstrated reductions in ispsilateral stroke rates in patients without symptoms after carotid endarterectomy, medical therapy of asymptomatic carotid artery stenosis has reduced rates of stroke to approximately 1% per year, raising questions about the ge...
متن کاملIntracranial internal carotid artery stenosis: longterm prognosis.
Sixty-six patients with greater than or equal to 50% stenosis of an intracranial internal carotid artery (IICA) were followed-up for an average of 3.9 years. Eighteen patients (27.3%) experienced ischemic events; 8 (12.1%) had isolated TIA and 10 (15.2%) a stroke. The observed stroke rate for patients 35 years and older are 13 times the expected infarction rate for a normal population. Patient...
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ژورنال
عنوان ژورنال: Nosotchu
سال: 1990
ISSN: 0912-0726,1883-1923
DOI: 10.3995/jstroke.12.123