نتایج جستجو برای: autonomic nerve system
تعداد نتایج: 2367153 فیلتر نتایج به سال:
OBJECTIVES The purpose of this study was to determine the patterns of autonomic nerve activity in congestive heart failure (CHF). BACKGROUND The relationship between autonomic nerve activity and cardiac arrhythmias in CHF is unclear. METHODS We implanted radiotransmitters in 6 dogs for continuous (24/7) simultaneous monitoring of left stellate ganglion nerve activity (SGNA), vagal nerve act...
BACKGROUND Recent studies have demonstrated that there is a high variability of renal sympathetic nerve density distribution from proximal to distal renal artery segments. The aim of our study was to investigate the roles of renal sympathetic nerve stimulation (RSS) on atrial fibrillation and cardiac autonomic nervous activity. METHODS AND RESULTS Twenty-eight dogs were randomly assigned to t...
We report the first case of acute autonomic, motor and sensory neuropathy (AASMN) associated with meningoencephalitis. A 62-year-old man presented with fever, neck stiffness, and coma. Respiratory failure developed. Magnetic resonance images showed an abnormality in the medial temporal lobe. Cerebrospinal fluid analysis revealed pleocytosis with a high protein level. Intensive care gradually im...
A,.t the present time most pharmacologists believe that acetylcholine is the activator and propagator of the chemical change present in all nerve conduction. This involves the axon and all synaptic junctions of both the sympathetic and the parasympathetic systems. At the sympathetic end organs, sympathin or norepinephrine is released as the effecter substance. Acetylcholine itself is the parasy...
Vascular reflexes were assessed in 17 adult patients with Charcot-Marie-Tooth disease using the Valsalva manoeuvre, and the pulse rate and systolic blood pressure responses to standing. Six patients showed abnormalities consistent with an autonomic neuropathy. One patient had giant nerve fibre bundles in the myenteric plexus of bowel resected for co-existent Crohn's disease, indicating histolog...
background: cirrhosis is a pathologically defined entity associated with a spectrumof characteristicmanifestations.the cardinal pathologic features reflect irreversible chronic injury of the hepatic parenchyma and include extensive fibrosis in association with the formation of regenerative nodules.autonomic dysfunction is a frequent and important complication of cirrhosis. the risk of mortality...
AIM Cardiovascular autonomic and peripheral sensory neuropathy is a known complication of chronic alcoholic and non-alcoholic liver diseases. We aimed to assess the prevalence and risk factors for peripheral sensory nerve and autonomic dysfunction using sensitive methods in patients with primary biliary cirrhosis (PBC). METHODS Twenty-four AMA M2 positive female patients with clinical, bioche...
It has been proposed that the responses of the cerebral circulation to hypoxia, hypercapnia and hypotension may be partially mediated by an autonomic reflex with receptors in the carotid body or sinus serving as sensors and the efferent limbs being the 7th cranial nerves. Transection of the 7th cranial nerve has been reported to impair the cerebral circulatory response to isolated chemoreceptor...
Acute autonomic and sensory neuropathy is a rare disorder that has been only anecdotally reported. We characterized the clinical, electrophysiological, pathological and prognostic features of 21 patients with acute autonomic and sensory neuropathy. An antecedent event, mostly an upper respiratory tract or gastrointestinal tract infection, was reported in two-thirds of patients. Profound autonom...
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