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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Italian journal of neurological sciences 20 (1999), S. 155-159 
    ISSN: 1126-5442
    Keywords: Key wordsMicroemboli ; Transcranial Doppler ; Mechanical heart valves ; Stroke ; Carotid stenosis ; Gaseous bubbles
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Transcranial Doppler detection of microembolic signals has been described in several clinical conditions such as carotid stenosis, prosthetic heart valves, acute stroke, and carotid surgery. The importance of these events for clinical decision-making is still a matter of debate. The authors review the literature and report their personal experience on the clinical significance of microemboli detection.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1590-3478
    Keywords: Coma ; Bilateral ophthalmoplegia ; Top of the basilar syndrome ; Thalamic paramedian infarcts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Sommario Una oftalmoplegia bilaterale può essere un segno inusuale di ischemia vertebrobasilare. Riportiamo i casi clinici di due pazienti (di 75 e 73 anni rispettivamente) che hanno presentato, con esordio acuto, compromissione dello stato di coscienza, oftalmoplegia bilaterale con ptosi bilaterale e lieve emiparesi destra. In entrambe le pazienti la RM cerebrale dimostrava lesioni ischemiche talamiche bilaterali e nel mesencefalo, l'ECG rivelava la presenza di fibrillazione atriale e lo studio Doppler delle arterie vertebrali a livello extracranico ed intracranico non risultava alterato. Il coinvolgimento ischemico del mesencefalo e delle regioni talamiche paramediane può, quindi, causare oftalmoplegia bilaterale e disturbi dello stato di coscienza. Nei due casi presentati una embolia cardiogena era il meccanismo eziopatogenetico più plausibile, e la prognosi per la paralisi oculare bilaterale è stata cattiva.
    Notes: Abstract Bilateral ophthalmoplegia may be an unusual sign of vertebrobasilar ischemia. We report the cases of two patients (75 and 73 years old), who suddenly developed drowsiness, bilateral ophthalmoplegia with bilateral ptosis and mild right hemiparesis. In both patients, MRI revealed bilateral thalamic and midbrain infarcts, ECG showed the presence of atrial fibrillation and Doppler study of the extracranial and intracranial vertebral arteries found no significant alterations. Ischemia involving the midbrain and thalamic paramedian regions may cause bilateral ophthalmoplegia and consciousness disturbances. In these two cases, the most plausible etiologic mechanism was cardiac embolism, and the prognosis for bilateral ocular palsy was poor.
    Type of Medium: Electronic Resource
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