نتایج جستجو برای: carotid doppler
تعداد نتایج: 93907 فیلتر نتایج به سال:
BACKGROUND AND PURPOSE Strokes are a frequent complication in uremic patients on dialysis. We wanted to evaluate the effect of this treatment on cerebral hemodynamic parameters, particularly those of patients with carotid stenosis, who are at higher risk for atherothrombotic ischemic events. METHODS We used transcranial Doppler ultrasonography to evaluate blood velocity of the middle cerebral...
BACKGROUND We sought to evaluate the routine echo-Doppler screening of carotid artery stenosis in patients undergoing coronary artery bypass grafting. METHODS A total of 2179 consecutive patients who underwent coronary artery bypass grafting alone or with other cardiac surgery at Tehran Heart Center, Tehran-Iran, between January 2005 and January 2006 were included in this retrospective study....
A 66-year-old male presented with right hemispheric transient ischemic attacks. Computed tomography angiography (CTA) demonstrated a very severe atherosclerotic stenosis of the proximal right internal carotid artery, > 95% by NASCET criteria. Carotid stenting was performed using a self-expanding stent (SES) alone, without balloon angioplasty or embolic protection. An immediate anteroposterior (...
Background and Objective: Osteoarthritis is the most common form of arthritis and joint disease and a major cause of disability among middle-aged and elderly people. The process of the progressive destruction of articular cartilage, causes pain and dysfunction of the joints involved. However, the main cause of this disease is not known. In several epidemiological studies from other countries, t...
The patient is a 63-year-old man with stage D heart failure and a left ventricular ejection fraction of <20% who presented to the Houston Methodist Hospital with cardiogenic shock. As a part of his care, he underwent placement of an intra-aortic balloon pump (IABP). The IABP settings were for the balloon to inflate with the aortic dicrotic notch and to deflate near the end of diastole. After as...
Transcranial Doppler sonography allows for noninvasive assessment of dynamic cerebral autoregulation. A wider clinical use of this approach has been hampered by the need for continuous arterial blood pressure (ABP) measurements. We describe a new method of a pure Doppler signal based estimation of dynamic autoregulation using heart rate (HR) and cerebral blood flow velocity (CBFV) information. ...
The Society of Radiologists in Ultrasound convened a multidisciplinary panel of experts in the field of vascular ultrasonography (US) to come to a consensus regarding Doppler US for assistance in the diagnosis of carotid artery stenosis. The panel's consensus statement is believed to represent a reasonable position on the basis of analysis of available literature and panelists' experience. Key ...
BACKGROUND AND PURPOSE We report the results of combined recording of hemodynamic and thromboembolic phenomena during carotid endarterectomy by means of computerized electroencephalography as well as transcranial Doppler ultrasonography. The study focuses on the additional value of transcranial Doppler to detect ischemia during surgery. METHODS Combined monitoring was performed in 130 consecu...
The aim of this study was to investigate the correlation between aortic/carotid atherosclerotic plaques and cerebral infarction. We examined 116 cases of cerebral infarction using transcranial Doppler ultrasound in order to exclude cerebrovascular stenosis. Transesophageal echocardiography and color Doppler ultrasound were used to detect aortic atherosclerotic plaques (AAPs) and carotid atheros...
BACKGROUND AND PURPOSE Embolic complications during ultrasound examinations are a rare cause of neurological deficits. The present case documents the occurrence of embolism by a nonobstructive compression maneuver during transcranial Doppler examination, resulting in a minor stroke. CASE DESCRIPTION A 63-year-old man suffered from recurrent transient ischemic attacks. Duplex sonography showed...
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