Abstract:Orthostatic hypotension (OH) is defined by evaluating postural blood pressure (BP) change, but the correlation between postural BP decreases and OH-associated symptoms is poor. We examined carotid duplex ultrasonography during HUT in 27 patients with various neurological disorders. Nine patients were diagnosed to have OH, and 4 of them had symptoms associated with OH. Decreased end-diastolic velocity of common carotid artery in symptomatic OH patients (–24.5 ± 4.2 cm/s) was significantly larger than that in as… Show more
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