Relative Cerebral Blood Transit Time Decline and Neurological Improvement in Patients After Internal Carotid Artery Stenting.

In this study we hypothesized that the alleviation of neurological symptoms long after internal carotid artery (ICA) stenting may be related to sustained improvement of cerebral perfusion. Thirty-four subjects (F/M; 15/19) with>70% stenosis of a single internal carotid artery and neurological symptoms, who underwent a carotid artery stenting procedure, were studied. Brain computed tomography perfusion (CTP) imaging was performed before and 3 years after ICA stenting. The following relative variables were compared: cerebral blood flow (rCBF), cerebral blood volume (rCBV), mean transit time (rMTT), time to peak (rTTP), and permeability surface area product (rPS). A survey also was conducted to compare the patients' clinical symptoms. Overall, we found that a trend toward rMTT decline was the only persisting change after ICA stenting. We then stratified the patients into the subgroups of  5% rMTT decline and found that those with a rMTT decline>2% reported a prominent reduction in subjective clinical symptoms such as headache, dizziness, tinnitus, blurred vision, transient blindness, a sense of gravity of the head, and pain in the eyeballs. We conclude that a shortened mean rMTT, likely reflecting improved cerebral microcirculation, underlies the improvement of neurological symptoms in patients with ICA stenosis. PMID: 31098943 [PubMed - as supplied by publisher]
Source: Advances in Experimental Medicine and Biology - Category: Research Tags: Adv Exp Med Biol Source Type: research

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Source: Chinese Medical Journal - Category: General Medicine Authors: Tags: Chin Med J (Engl) Source Type: research
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Source: Neuroscience Letters - Category: Neuroscience Source Type: research
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Source: Neuroscience - Category: Neuroscience Source Type: research
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Source: Journal of Clinical Neuroscience - Category: Neuroscience Source Type: research
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Source: Journal of Clinical Neuroscience - Category: Neuroscience Source Type: research
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Source: Acta Neurochirurgica - Category: Neurosurgery Source Type: research
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Source: Acta Chirurgica Belgica - Category: Surgery Tags: Acta Chir Belg Source Type: research
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