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Topic: Autonomic function

  The Autonomic Assessment Report
A New Noninvasive Measure of Autonomic Function and Balance.
Power spectral density analysis is used to assess how power is distributed as a function of frequency, providing a means to quantify autonomic balance at any given point in the 24-hour period, as well as to chart the circadian rhythms of the different branches of the autonomic nervous system.
Autonomic imbalances have been implicated in a wide variety of pathologies, including depression, fatigue, premenstrual syndrome, hypertension, diabetes mellitus, ischemic heart disease, coronary heart disease and environmental sensitivity.
heartmath.org /research/research-abstracts/autonomic-assessment.html   (302 words)

 Autonomic Function
Autonomic nervous system function is associated with insulin dynamics and obesity in adults.
This diagnostic trial is a cross-sectional study to assess and categorize insulin dynamics and examine correlations with autonomic tone in obese children, age 0-17 years, who have met the inclusion and exclusion criteria.
This problem is clinically important because the preservation of residual beta cell function during the first five years of diabetes leads to improvement in glycemic control (lower sugars) and has a long-lasting benefit with respect to the prevention of complications.
www.utmem.edu /help_center/autonomic_function.htm   (579 words)

 Ansar - Technical Review : Diabetic Autonomic Neurology - Standard of Care
Disruption of rnicrovascular skin blood flow and sudomotor function may be among the earliest manifestations of DAN and lead to dry skin, loss of sweating, and the development of issures and cracks that allow microorganisms to enter.
Meta-anaryses of published data demonstrate that reduced cardiovascular autonomic function as measured by heart rate variability (HRV) is strongly (i.e.relative risk is doubled) associated with an increased risk of silent myocardial ischemia and mortality.
Other forms of autonomic neuropathy can be evaluated with specialized tests, but these are less standardized and less available than commonly used tests of cardiovascular autonomic function, which quantify toss of HRV.
ansargroupinc.com /dan.htm   (1219 words)

 nervous system -> Autonomic Nervous System on Encyclopedia.com 2002   (Site not responding. Last check: 2007-10-15)
The autonomic nerve fibers form a subsidiary system that regulates the iris of the eye and the smooth-muscle action of the heart, blood vessels, glands, lungs, stomach, colon, bladder, and other visceral organs not subject to willful control.
All of the fibers of the autonomic nervous system are motor channels, and their impulses arise from the nerve tissue itself, so that the organs they innervate perform more or less involuntarily and do not require stimulation to function.
Autonomic nerve fibers exit from the central nervous system as part of other peripheral nerves but branch from them to form two more subsystems: the sympathetic and parasympathetic nervous systems, the actions of which usually oppose each other.
www.encyclopedia.com /html/section/nervouss_autonomicnervoussystem.asp   (905 words)

 Autonomic Nervous System Physiology   (Site not responding. Last check: 2007-10-15)
Long-term activation of spinal and extraspinal nociceptive afferents contributes to the stimulation of the autonomic nervous system that may in turn have a deleterious effect over time on visceral function.
The measurement protocols being utilized to assess the function of the autonomic nervous system are heart rate variability, blood pressure variability, baroreceptor sensitivity, skin conductance and peripheral skin temperature.
The project is entitled "The Effects of Spinal Manipulation on Control of Peripheral and Cardiovascular Autonomic Function During Cold Pressor Response in Asymptomatic Subjects".
www.nycc.edu /research/autonomic.asp   (397 words)

 Journal,Indian Academy of Clinical Medicine   (Site not responding. Last check: 2007-10-15)
Patients taking medication or affected by diseases that could influence autonomic nervous function, interfere with the execution or evaluation of cardiovascular tests, or influence the QT interval were excluded from the study.
The pathophysiological mechanism for QTC prolongation in diabetic patients with cardiac autonomic neuropathy is unknown.
Autonomic neuropathy, QT interval lengthening and unexpected deaths in male diabetic patients.
www.indegene.com /jiacm/indJIACMQTc.html   (2415 words)

 Diabetes Care: Eighteen years of fair glycemic control preserves cardiac autonomic function in type 1 diabetes   (Site not responding. Last check: 2007-10-15)
All of the cardiac autonomic tests were significantly different in the high- and the low-Hb[A.sub.1c] groups, and the most favorable scores for all tests were seen in the low-Hb[A.sub.1c] group.
Cardiac autonomic function was preserved with Hb[A.sub.1c] <8.4%, whereas cardiac autonomic dysfunction was impaired in the group with Hb[A.sub.1c] [greater than or equal to] 8.4%.
Reduced cardiovascular autonomic function is associated with increased mortality in both type 1 and type 2 diabetes (1-4).
www.findarticles.com /p/articles/mi_m0CUH/is_4_27/ai_n6006399   (1451 words)

 Hypnosis in Autonomic Function
Hypnosis in Autonomic Function Clinical Trials Information presented on Clinical Trials Search is not intended to be a substitute for qualified health advice, trips or treatment by using a genuine doctor.
Hypnosis in Autonomic Function Clinical Trials and other clinical trials allow for volunteers to have health treatment alternatives before they are available to the general public.
The autonomic nervous system is activated when the body is stressed, not only from physical stimuli such as cold temperature, but also from mental stimuli, such as seeing a rattlesnake up close.
www.clinicaltrialssearch.org /hypnosis_in_autonomic_function.html   (1183 words)

 Abstract: Comprehensive Study of Autonomic Function in a Population with Primary Sjögren's Syndrome. No Evidence ...
Abstract: Comprehensive Study of Autonomic Function in a Population with Primary Sjögren's Syndrome.
Autonomic nervous system disorders have been described in patients with primary Sjögren's syndrome (SS), but the results in controlled studies have been contradictory, varying from normal to sympathetic or parasympathetic dysfunction.
The prevalence of autonomic dysfunction is not increased in patients with primary SS compared to the general population.
www.jrheum.com /abstracts/abstracts03/74.html   (240 words)

 [No title]
Since corticosteroid treatment may also influence autonomic function by improving small vessel vasculitis affecting vasa nervosum or decreasing the production of autoantibodies against neurotransmitter receptors, the patients taking corticosteroids were also analyzed in a subgroup.
While autonomic disorders have definitively been described in some patients with primary SS, our study suggests that significant autonomic neuropathy or dysfunction is rare in primary SS or may only affect some subgroups of patients.
To detect minor variations in the function of the autonomic regulatory system, which are possibly restricted to a subgroup of SS patients, larger series of patients with properly matched general population based controls should be studied.
www.jrheum.com /01/74.html   (4081 words)

 ANS Function Testing LCD Rev1   (Site not responding. Last check: 2007-10-15)
Autonomic function testing will be reimbursed as reasonable and necessary only when used for one or more of the following indications and when directed at establishing a more accurate or definitive diagnosis or contributing to clinically relevant medical decision-making.
Diagnose the presence of autonomic neuropathy in a patient with signs or symptoms suggesting a progressive autonomic neuropathy.
Before proceeding to autonomic testing, other diagnostic tests such as EKG, echocardiogram, Holter, EEG, stress test, tilt table are generally performed as necessary to exclude more common causes of symptoms that might prematurely be attributed to autonomic dysfunction.
www.ghimedicare.com /lmrp2/ne002g01.html   (1197 words)

 Quantitative cardiovascular autonomic function study in Fisher syndrome -- Lyu et al. 73 (3): 333 -- Journal of ...
autonomic function was evaluated by the Valsalva ratio and RR interval variation during rest and deep breathing.
Quantitative assessment of cardiovascular autonomic function in Guillain-Barré syndrome.
RR interval variation and the sympathetic skin response in the assessment of autonomic function in peripheral neuropathy.
jnnp.bmjjournals.com /cgi/content/full/73/3/333   (1533 words)

 IBM Research | Autonomic Computing | Overview | The Solution
Autonomic controls use motor neurons to send indirect messages to organs at a sub-conscious level.
IBM has named its vision for the future of computing "autonomic computing." This new paradigm shifts the fundamental definition of the technology age from one of computing, to one defined by data.
The nature of the autonomic system is that it is always on.
www.research.ibm.com /autonomic/overview/solution.html   (301 words)

 Can QTc Prolongation Detect Diabetics at High Risk for Sudden Death due to Cardiac Autonomic Neuropathy ?   (Site not responding. Last check: 2007-10-15)
QT interval prolongation and sudden cardiac death in diabetic autonomic neuropathy.
Abnormal cardiac function in diabetics with autonomic neuropathy in the absence of ischemic heart disease.
QT prolongation on the electrocardiogram in diabetic autonomic neuropathy.
www.indegene.com /End/FeatArt/indEndFeatArt1.html   (2033 words)

 Diabetes Care: Impaired Diurnal Cardiac Autonomic Function in Subjects With Type 2 Diabetes   (Site not responding. Last check: 2007-10-15)
With this method, diabetic subjects with or without symptomatic autonomic neuropathy were shown to have impaired diurnal cardiac autonomic nerve function [11-14].
The patients with symptomatic autonomic neuropathy (DAN, n = 11) were compared with age-matched normal subjects (n = 17) and both age-matched and duration-matched patients without diabetic neuropathy (n = 11) or patients with peripheral neuropathy (n = 8) from the normal and diabetic subjects.
Peripheral nerve function was evaluated by temperature-controlled nerve conduction velocity in the median nerve on one side.
www.findarticles.com /p/articles/mi_m0CUH/is_12_22/ai_58447359   (1202 words)

 Welcome to Greenwich Hospital
If the physician recommends autonomic nervous system testing, then either the patient or the doctor can contact the Autonomic Function Laboratory at Greenwich Hospital for an appointment.
Sweat function is measured by looking at how much humidity is created on the skin when sweat glands are active.
This activates sympathetic nerve fibers, leading to increased sweating and a change in the humidity of the skin, which is measured by the recording device.
www.greenhosp.org /medicalservices_neuroscience_autonomic.asp   (1000 words)

 Autonomic Nervous System Clinic: Department of Neurology: UI Health Care
Autonomic Disorders may adversely affect genitourinary function, gastrointestinal function, sweating, pupillary function, and cardio-vascular function.
The Autonomic Clinic focuses on adverse effects on cardiovascular function with particular reference to control of blood pressure and cardiac rate.
The Autonomic Clinic focuses on those diseases that affect the autonomic nervous system but it has a close working relationship with members of the Division of Cardiology of the University of Iowa’s Department of Internal Medicine.
www.uihealthcare.com /depts/med/neurology/patients/autonomicclinic.html   (330 words)

 Thyroid status influences baroreflex function and autonomic contributions to arterial pressure and heart rate -- Foley ...
Thyroid status influences baroreflex function and autonomic contributions to arterial pressure and heart rate -- Foley et al.
The residual MAP after removal of tonic activity of the autonomic nervous system was lower in Hypo rats compared with either Eut or Hyper rats.
The specific physiological consequences of blunted arterial baroreflex function in Hypo rats are unknown.
ajpheart.physiology.org /cgi/content/full/280/5/H2061   (4842 words)

 eMedicine - Idiopathic Orthostatic Hypotension and other Autonomic Failure Syndromes : Article by Dianna Quan, MD   (Site not responding. Last check: 2007-10-15)
Autonomic failure may be caused by dysfunction of the central or peripheral nervous system pathways.
Autonomic dysfunction is a common finding in MSA but not essential to the diagnosis.
In MSA with autonomic involvement, changes in the intermediolateral cell column also may be seen; in addition, widespread abnormalities are apparent in the brain.
www.emedicine.com /neuro/topic609.htm   (3805 words)

 Assessment of Autonomic Function and Balance
While it has been suggested that patients with CFS may have impaired autonomic nervous system function, there have been few studies that have examined this question directly.
The purpose of this study was to determine if there were differences in autonomic function, as assessed by 24-hour heart rate variability (HRV) analysis, in 22 CFS patients (age range 31-69, mean age 45.5) as compared to healthy age and sex-matched controls.
Our results indicate that autonomic function is indeed impaired in CFS patients, as both sympathetic and parasympathetic activity are significantly depressed with respect to healthy age and sex-matched controls.
www.heartmath.org /research/research-abstracts/autonomic-function.html   (261 words)

 autonomic nervous system function and breathing.
WHO IS IN Due to breathing’s potential dominance of the autonomic nervous system anything you do 5,000 to 30,000 times a day or two to five hundred million times per life time will influence you positively or negatively in many ways.
ANS dysfunction can be caused by toxicity of the brain stem and/or the autonomic ganglia, infections and nutrient deficiencies, by scar tissue and mechanical compression and postures influencing ANS fibers and ganglia.
"Fight or Flight: In weighing cardiac risk factors, doctors are overlooking autonomic tone" This article goes quite deep into the science of the ANS in a very enlightened way and concern for attention to the sympathetic and parasympathetic aspects but as you can see it completely overlooks the influence the breathing has on all that.
www.breathing.com /articles/autonomic-nervous-system.htm   (794 words)

 Autonomic nervous system function in Huntington's disease -- Andrich et al. 72 (6): 726 -- Journal of Neurology, ...
Assessment of cardiovascular autonomic function: age-related normal ranges and reproducibility of spectral analysis, vector analysis and standard tests of heart rate variation and blood pressure response.
Autonomic function in panic disorder: cardiorespiratory and plasma catecholamine responsivity to multiple challenges of the autonomic nervous system.
The influence of autonomic neuropathy on mortality in insulin-dependent diabetes.
jnnp.bmjjournals.com /cgi/content/full/72/6/726   (4670 words)

 Empire Medicare Services   (Site not responding. Last check: 2007-10-15)
Autonomic disorders may be congenital or acquired - primary or secondary.
Impaired Autonomic Function is Associated With Increased Mortality, Especially in Subjects With Diabetes, Hypertension, or a History of Cardiovascular Disease.
Autonomic neuropathy- a complication less pronounced in patients with Type 1 diabetes mellitus who have lower blood glucose levels.
www.ghimedicare.com /drafts/cacansft.html   (2104 words)

 24-hour patterns of cardiac autonomic function improves post kidney and kidney-pancreas transplant.   (Site not responding. Last check: 2007-10-15)
However, it is unknown if patients experience improvement in 24-hour patters of cardiac autonomic function (CAF) after kidney (K) or kidney-pancreas (KP) transplant.
The more pronounced circadian improvement is consistent with the theoretical premise that these measures are the last to show compromised function.
If so, these measures of 24-hour HRV could be used to monitor the restoration of cardiac autonomic function and identify patients at increased risk of morbid events.
www.a-s-t.org /library/abstracts99/872.htm   (336 words)

 Cardiovascular autonomic function correlates with the response to aerobic training in healthy sedentary subjects -- ...
Cardiovascular autonomic function correlates with the response to aerobic training in healthy sedentary subjects -- Hautala et al.
autonomic function is an important determinant of the response
autonomic function may predict the response to aerobic training.
ajpheart.physiology.org /cgi/content/full/285/4/H1747   (3019 words)

 The effect of aging on cardiac autonomic and postganglionic sudomotor function.   (Site not responding. Last check: 2007-10-15)
Little quantitative information is available on the effects of age on peripheral autonomic function.
The QSART responses were significantly larger in male subjects and were generally lower in older subjects of both sexes but a significant negative regression with age was found only in female subjects.
Cardiac vagal function is impaired with age, but postganglionic sympathetic function is little affected by age, suggesting selectivity of effects of aging on autonomic function.
www.arclab.org /medlineupdates/abstract_2314419.html   (185 words)

 Cardiac Autonomic Function in a Multiethnic Population   (Site not responding. Last check: 2007-10-15)
Diabetic autonomic neuropathy is associated with increased mortality and morbidity from cardiovascular disease (CVD), possibly as a result of disruption of autonomic nervous system heart beat regulation.
The proposed pilot study represents the first step in a line of research that will investigate the relationship between insulin resistance and autonomic regulation of cardiac function, and the role of these novel risk factors in the reported ethnic disparities in CVD mortality in Hawaii.
The specific aim of this proposal is to assess autonomic function among a multiethnic population in Honolulu, Hawaii.
www.pbrc.hawaii.edu /crc/studies/crc01-15.htm   (265 words)

 [No title]   (Site not responding. Last check: 2007-10-15)
The autonomic nervous system is the normally involuntary or unconscious division of the peripheral nervous system.
Everything from salivation and digestion to heart rate, respiratory rate, pancreatic function, liver and gallbladder function, and urine excretion through the kidneys, ureters and bladder, are only a few of the things that fall under autonomic control.
The impact of this is reduced healing, increased hypertension, facilitated segments, changes in endocrine function impacting metabolism, brain function and ultimately all homeostatic mechanisms.
neseminars.com /nes3/products.nsf/itemmasterlookup/pmtb3?opendocument   (1044 words)

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