Naslov
Neurosonology

Autori
Demarin, Vida

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, stručni

Izvornik
Srce in možgani / Fras, Zlatko ; Kenda, Miran ; Žvan, Bojana - Ljubljana, 2007, 52-52

Skup
15. kardiološki dnevi- strokovno sestenek združenja kardiologov Slovenije s mednarodno udeležbo

Mjesto i datum
Portorož, Slovenija, 26.10.2007. - 27.10.2007

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Doppler; carotid artery; TCD; stroke

Sažetak
Ultrasound studies are routinely performed in stroke centers. They include both extracranial and intracranial noninvasive cerebrovascular evaluation. Extracranial color and power Doppler enables information of noninvasive carotid and vertebral artery testing. Informations of intima-media thickness by means of high-resolution ultrasound are available, as a surrogate marker of atherosclerosis. Besides ; informations of the presence of carotid plaques are obtained, as well as on plaque content, surface, composition and the degree of stenosis. The benefit of carotid endarterectomy in stroke prevention in advanced carotid stenosis was proved in large studies. A high correlation between angiography and carotid color Doppler ultrasound in detecting various degrees of carotid stenosis exists. Ultrasonographic B-mode characterization of plaque morphology may be useful in assessment of the vulnerability of the atherosclerotic lesion. The detection of rare causes of ischemic stroke, such as dissections, intima hyperplasia and other less frequent etiologies is facilitated by the systematic use of ultrasound studies. Bedside evaluation is required in all stroke patients. Transcranial Doppler (TCD) enables information of the intracranial hemodynamics therefore, bedside evaluation in combination with noninvasiveness, identification and follow up of occlusive disease is possible. Spontaneous or drug-induced thrombolysis can be monitored and enhanced by systematic use of ultrasound studies. The evaluation of development of collateral circulation, in atherosclerotic, as well as in dissection or inflammatory disease is possible. In hemorrhagic stroke, vasospasm of the intracranial vessels can be detected, and reliably monitored. In intensive care unites, evaluation of the intracranial pressure can be monitored, as well, as the development of the cerebral circulatory arrest, defining the exact time of the brain death. Monitoring of the cerebral circulation is possible during surgery. Recent TCD modalities enable detection of cerebral microembolic signals, estimation of cerebral vasoreactivity (VMR), and cerebral autoregulation by analyzing cerebral microcirculatory responses after different stimulation tests. Microembolic signals can be detected in wide clinical settings and may be important by indicating an increased risk of stroke.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

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