1. Cerebral and Cervical Arteries
نویسندگان
چکیده
منابع مشابه
Cerebral Arteries and Cerebral Microvascular Pressure
are major determinants of local microvascular pressure. Recent studies have shown that resistance of large arteries and cerebral microvascular pressure are affected by several physiological stimuli, including changes in systemic blood pressure, increases in cerebral metabolism, activity of sympathetic nerves, and humoral stimuli such as circulating vasopressin and angiotensin. Stimuli such as s...
متن کاملCerebral Resistance Arteries
were independently controlled by two servo-controlled pumps, and changes in the diameter of the segment were registered by an automated video technique. In the absence of flow, these segments maintained their diameter when intraluminal pressure was changed over the range 30-90 mm Hg. When intraluminal pressure was low (30 mm Hg), flow at 20 pl/min caused dilation. This is half the rate of flow ...
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Fibromuscular dysplasia is an uncommon, segmental, nonatherosclerotic arterial disease of unknown aetiology. The disease primarily affects women and involves intermediate-sized arteries in many areas of the body, including cervical and intracranial arteries. Although often asymptomatic, fibromuscular dysplasia can also be associated with spontaneous dissection, severe stenosis that compromises ...
متن کاملHomocysteine and pulsatility index of cerebral arteries.
BACKGROUND AND PURPOSE A pulsatility index (PI) represents vascular resistance distal to an examined artery. The purpose of the present study was to evaluate an association between plasma total homocysteine (tHcy) and PIs of the cerebral arteries in patients with ischemic stroke. METHODS Consecutive patients with ischemic stroke referred to a neurovascular ultrasound laboratory were evaluated...
متن کاملNeurogenic vasodilation of cat cerebral arteries.
Transmural nerve stimulation (TNS) with 0.3-msec pulses between 1 and 25 Hz dilated cat cerebral artery segments in the presence of active muscle tone. Maximum vasodilatation occurred at 8 Hz. The dilator response to exogenous acetylcholine, but not to TNS, was abolished by atropine. Neither physostigmine nor hemicholinium affected the dilator response to TNS, which persisted after administrati...
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ژورنال
عنوان ژورنال: Nihon Naika Gakkai Zasshi
سال: 2013
ISSN: 0021-5384,1883-2083
DOI: 10.2169/naika.102.354