Extractions: Add to Favorites Make Your Homepage Member Login Register Increase Type Size SEARCH All Patient Guides News Community Featured Centers Select Aneurysm Arrhythmia Arrhythmia Treatment Blood Pressure Bypass Surgery Cholesterol Defibrillator (ICD) Heart Attack Heart Failure Pacemaker Peripheral Vascular Stent Prevention Center Specialty Centers Home News Center ... Hospital Partners Inappropriate sinus tachycardia is a condition in which the patient has a normal heart but an unusually fast heart rate, both at rest and in response to physical activity. It is a generally harmless type of arrhythmia (irregular heart rhythm). If the heart rate is persistently and severely elevated, this sustained level of exertion can damage the pumping ability of the heart; however, this is quite rare.
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Tachycardia - Wikipedia postural orthostatic tachycardia syndrome (POTS) is a form of tachycardia that occurswith a change in body position (eg, going from laying down to standing up http://www.wikipedia.org/wiki/Cardiac_arrhythmia/tachycardia
Extractions: Main Page Recent changes Edit this page Older versions Special pages Set my user preferences My watchlist Recently updated pages Upload image files Image list Registered users Site statistics Random article Orphaned articles Orphaned images Popular articles Most wanted articles Short articles Long articles Newly created articles Interlanguage links All pages by title Blocked IP addresses Maintenance page External book sources Printable version Talk Log in Help (Redirected from Cardiac arrhythmia/tachycardia Tachycardia is the too-rapid beating of the heart. If the heart beats too rapidly it performs inefficiently and blood flow and blood pressure paradoxically are reduced. Postural orthostatic tachycardia syndrome (POTS) is a form of tachycardia that occurs with a change in body position (eg, going from laying down to standing up) and which is generally due to dysautonomia Tachycardia is a general term that is applied in a lot of different contexts. Most generally it means pathologically increased heart rate. Tachycardia, as applied in adult medicine, is defined as a heart rate of over 100 beats per minute (BPM).
HealthChannels.com - Cardiology Links for MVP Mitral Valve Prolapse Syndrome Research and Support Postural OrthostaticTachycardia postural orthostatic tachycardia syndrome Rheumatic Fever http://www.healthchannels.com/cardiology.shtml
Links On CFIDS, Fibromyalgia, And Related Illnesses from Johns Hopkins where the research that found a link between NMH and CFIDS andFMS was found postural orthostatic tachycardia syndrome (POTS) this is an http://sickchicks.homestead.com/links2.html
Extractions: Abbreviations: CFIDS - Chronic Fatigue Immune Dysfunction Syndrome ME - Myalgic Encephalomyelitis FMS - Fibromyalgia Syndrome MPS - Myofascial Pain Syndrome MCS - Multiple Chemical Sensitivities EI - Environmental Illness GWS - Gulf War Syndrome POTS - Postural Orthostatic Tachycardia Syndrome (a form of dysautonomia) NMH - Neurally Mediated Hypotension (another form of dysautonomia)
NEJM -- The Neuropathic Postural Tachycardia Syndrome Background The postural tachycardia syndrome is a common disorder that is characterizedby chronic orthostatic symptoms and a dramatic increase in heart rate http://content.nejm.org/cgi/content/short/343/14/1008
Extractions: Giris Jacob, M.D., D.Sc., Fernando Costa, M.D., John R. Shannon, M.D., Rose Marie Robertson, M.D., Mark Wathen, M.D., Michael Stein, M.D., Italo Biaggioni, M.D., Andy Ertl, Ph.D., Bonnie Black, R.N., and David Robertson, M.D. Table of Contents Full Text of this article PDF of this article Editors' Summaries ... Related Articles in Medline Articles in Medline by Author: Jacob, G. Robertson, D. Medline Citation Neurologic Disease ... ABSTRACT Background The postural tachycardia syndrome is a common disorder that is characterized by chronic orthostatic symptoms and a dramatic increase in heart rate on standing, but that does not involve orthostatic hypotension. Several lines of evidence indicate that this disorder may result from sympathetic denervation of the legs. Methods We measured norepinephrine spillover (the rate of entry of norepinephrine into the venous circulation) in the arms and legs both before and in response to exposure to three stimuli (the cold pressor test, sodium nitroprusside infusion, and tyramine
Extractions: John R. Shannon, M.D., Nancy L. Flattem, B.S., Jens Jordan, M.D., Giris Jacob, M.D., D.Sc., Bonnie K. Black, B.S.N., Italo Biaggioni, M.D., Randy D. Blakely, Ph.D., and David Robertson, M.D. Table of Contents Full Text of this article PDF of this article Find Similar Articles in the Journal ... Related Articles in Medline Articles in Medline by Author: Shannon, J. R. Robertson, D. Medline Citation Neurologic Disease ... ABSTRACT Background Orthostatic intolerance is a syndrome characterized by lightheadedness, fatigue, altered mentation, and syncope and associated with postural tachycardia and plasma norepinephrine concentrations that are disproportionately high in relation to sympathetic outflow. We tested the hypothesis that impaired functioning of the norepinephrine transporter contributes to the pathophysiologic mechanism of orthostatic intolerance.
Postural Tachycardia Syn (POTS) SC AU Schondorf R AU - Suarez GA AU - Fealey RD AU - Camilleri M TI - Comparisonof the postural tachycardia syndrome (POTS) with orthostatic hypotension due http://neuro-www.mgh.harvard.edu/neurowebforum/AutonomicArticles/1.15.9710.47PMP
Autonomic Nervous System Disorders Menu postural orthostatic tachycardia (2/2/97) 521 AM; Medical Center Experiences (2/1/97 posturaltachycardia syndrome (1/13/97) 534 PM; Mayo clinic experiences (1/9 http://neuro-www.mgh.harvard.edu/neurowebforum/AutonomicMenu.html
Vaso-Vagal Syndrome VasoVagal syndrome includes various syncopes,TMJ, nausea, fainting, orthostatichypotension htm 7/5/98 657 PM 5822 postural orthostatic tachycardia.htm 7/5/98 http://www.clinicalpsychologist.com/clinicalpsychologist/Vaso-Vagal_Syndrome_sei
Extractions: Click Here to Check Out the New Online Vaso-Vagal Discussion Forum 7/5/98 6:57 PM 5410 Causes of sycncope.htm 7/5/98 6:57 PM 6577 7/5/98 6:57 PM 4654 Disopyramide syncope treatment.htm 7/5/98 6:57 PM 5134 7/5/98 6:57 PM 5651 7/5/98 6:57 PM 6222 HrtRt Var Sleep.htm 7/5/98 6:57 PM 7065 7/5/98 6:57 PM 5415 Infnt reg vgl brake.htm 7/5/98 6:57 PM 6841 Insulin related hypotension.htm 7/5/98 6:57 PM 7154 Lit Review.htm 7/5/98 6:57 PM 4886 Micturation syncope.htm 7/5/98 6:57 PM 5456 Near fainting physiology.htm 7/5/98 6:57 PM 5266 Neurally Mediated Syncopes in review.htm 7/5/98 6:57 PM 4768 Neuroregltn of nose and bronchi.htm 7/5/98 6:57 PM 5822 Postural Orthostatic Tachycardia.htm 7/5/98 6:57 PM 5535 7/5/98 6:57 PM 5247 7/5/98 6:57 PM 5203 7/5/98 6:57 PM 6910 Swallowing disorders from impaired inhibitory mechanisms.htm
Orthostatic Intolerance Syndromes Vasoregulatory Asthenia. Currently, there are three main categories used to describeOrthostatic Intolerance Conditions postural tachycardia syndrome (POTS). http://www.ndrf.org/orthostat.htm
Extractions: Be sure to visit the NDRF Reference Page where you can learn more about the NDRF Patient Handbook, Videos and other reference materials. Definitions History Symptoms ... Prognosis Definitions It is estimated that over 500,000 Americans are afflicted with Orthostatic Intolerance. Despite the enormity of the number, these conditions are among the least understood of the autonomic disorders. Affecting predominately younger individuals, often in those under the age of thirty five, these syndromes affect more women than men. The onset can be sudden, and the impact can be significant on both lifestyle and on the capacity to work. Often, these conditions tend to be misdiagnosed as either a psychiatric or anxiety - related disorders, due to the nature of the symptoms. Standing upright results in a series of reflexive bodily responses, regulated by the Autonomic Nervous System , to compensate for the effect of gravity upon the distribution of blood. These conditions are a result of an inappropriate response to this change in body position.
Background people with postural tachycardia syndrome is a dramatic increase in heart rate thatis not associated with a decrease in blood pressure (orthostatic hypotension http://www.biology.bc.edu/biology/courses/BI554/new-mpo-stuff/Postural_Tachycard
Extractions: Dysfunction of Nerve Transmission in Legs Related to Postural Tachycardia Syndrome due to Dysfunctional Nerves in Legs Why the study was done How the study was done The researchers measured increases in norepinephrine in the venous blood of the arms and legs of 10 patients and 8 normal subjects after stimulating the sympathetic nervous system. What the researchers found Sympathetic denervation in the legs is suggested by the minimal increases in norepinephrine observed in the leg veins of all 10 patients compared with larger increases observed in their arms and in the arms and legs of the normal subjects. The Briefing In Search of the Underlying Cause for Postural Tachycardia Syndrome Postural tachycardia syndrome usually affects young women in their 20s and 30s. According to these authors, however, the nonspecific nature of the symptoms and absence of orthostatic hypotension have led to a lack of recognition of this syndrome among physicians and researchers. The underlying cause of postural tachycardia is unknown. An abnormality in the sympathetic nerves supplying the legs is suggested by earlier research showing that patients with this syndrome have: A tendency for blood to pool in the legs when standing.
FOR PARENTS OF SICK AND WORN-OUT CHILDREN (CFS, CFIDS, NMH, ME, Deals with pediatric chronic fatigue syndrome, neurally mediated hypotension, fibromyalgia and other Category Health Conditions and Diseases Youth and Young Adults syndrome (CFS); Chronic Fatigue Immune Dysfunction syndrome (CFIDS); Neurally MediatedHypotension (NMH); postural orthostatic tachycardia (POTS); Fibromyalgia (FMS http://www.bluecrab.org/health/sickids/sickids.htm
Extractions: Previous Story ... Related Stories Next Story Source: American Society For Technion - Israel Institute Of Technology Date: New York, New York and Haifa, Israel, February 12, 2001 People who complain of repeated dizzy spells, elevated heartbeat, or fainting after standing up from a lying position will now have their concerns better addressed by doctors. Neuropathic Postural Tachycardial Syndrome (NPTS) affects approximately 500,000 people in the U.S., primarily women between 20 and 45. Dr. Giris Jacob of the Technion-Israel Institute of Technology in Haifa, and Dr. David Robertson of Vanderbilt University in Tennessee, found that NPTS can be caused, in part, by genetic mutations or by disease that can occur after surgery, pregnancy, or an inflammatory illness. Drs. Jacob and Robertson published their findings in The New England Journal of Medicine (October 5, 2000) and Circulation: Journal of the American Heart Association (April 6, 1999; 99: 1706-1712). Dr. Julian Stewart, professor of physiology at New York Medical College, says the researchers have made significant advances in their field.
Extractions: Journal: J Pediatr 2002 Apr;140(4):387-9 Author: Rowe PC. Affiliation: Divsion of Pediatrics and Adolescent Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD 21287. NLM Citation: PMID: 12006948 Chronic fatigue is a prominent symptom in a variety of overlapping syndromes of circulatory dysfunction, the most notable examples of which are neurally mediated hypotension (NMH) and postural tachycardia syndrome (POTS). An early suggestion that such abnormalities were treatable causes of symptoms in what we now call chronic fatigue syndrome (CFS) was made in 1940 by Alexander MacLean and Edgar Allen.1 They described a group of patients who experienced excessive acceleration of the heart and hypotension after moving from the recumbent to the erect posture, usually associated with symptoms of orthostatic exhaustion, blurring of vision, weakness on exercise, and syncopal episodes. McLean and Allen attributed the tachycardia to a reduced venous return to the heart, in part because symptoms and hemodynamic changes could be provoked within 10 seconds by Flack's test, which involved forced expiration into a tube to maintain a mercury column at 40 mm, thereby reducing blood flow into the thorax.1,2
Info31 This condition may also be called orthostatic syncope (pronounced sinco-pee), neurallymediated hypotension (NMH), postural tachycardia syndrome (POTS), or http://iam.homewithgod.com/helenhummel/info31.html
Extractions: When your child persistently suffers from pain, fatigue, heat and exercise intolerance, dizziness, nausea, 'cognitive fog,' and other symptoms of Chronic Fatigue and related syndromes, you as a parent have special kinds of problems. This page is devoted to developing and pointing toward help on these problems.
Chronic Fatigue Syndrome Recently the syndrome has undergone a renaissance as the postural orthostatic tachycardiasyndrome , acronymically POTS , reported in adults by workers at http://www.nymc.edu/fhp/centers/syncope/cfs.htm
Extractions: Chronic Orthostatic Intolerance POTS [Circulatory Findings in POTS and CFS] The chronic fatigue syndrome (CFS) has been defined as a distinct clinical entity characterized by chronic, often relapsing, but always debilitating fatigue lasting for at least 6 months and causing impaired overall physical and mental functioning. Recent CDC criteria (1994) have been broadly formulated in order to standardize research in the field resulting in an operating framework which includes cognitive difficulties, pharyngitis, tender lymphadenopathy, muscle pain, joint pain, headache, sleep disturbance or poor sleep, and post-exercise malaise as central features of the illness. Since a precise etiology for the syndrome remains elusive, the diagnosis is largely made by exclusion once specific medical and psychiatric disorders are ruled out. A central imperative, is to determine to as great an extent as possible, whether there are any single or relatively small set of pathophysiologic entities causing the syndrome. goto top Investigations into the pathophysiology of CFS have remained inconclusive although several possibilities exist. For example, it might be expected that CFS patients could demonstrate striated muscle deficiencies. However, skeletal muscle energetics, structure and histopathology, physiology, and glycolytic activity have been normal and electromyographic results have been inconclusive in these patients. In vivo analyses of muscle energetics are similarly suggestive but not definitive. Cardiac studies have not consistently demonstrated defects in day-to-day cardiac fitness among CFS patients compared to other deconditioned people. Infectious and immune pathology have often been suspected but not conclusively demonstrated as major etiologic factors although studies hint at impaired inflammatory cytokines and cellular immunity.
Chemical Survivors' Foundation: Main Archives/Abstracts in patients with postural tachycardia syndrome (PubMed PubMed); Familial orthostatictachycardia due to Impaired postural cerebral hemodynamics in young patients http://www.chemical-survivors.com/Main_Archives/Abstracts/more4.html
Extractions: Looking for a particular resource? all categories only this category More search options Home Main Archives Abstracts : Page 4 Resources: Pages: Siting of Schools: Creating Safe Learning Zones (APHA) HOUSEPLANTS FIGHT AIR POLLUTION (PAC) Developing effective measures of fatigue. (FreePresentations) Homeopathic treatment of Chronic Fatigue Syndrome: three case studies using Jan Scholten's methodology (ImmuneSupport) The experience of living with fibromyalgia: confronting an invisible disability (ImmuneSupport) Environmental stewardship and drugs as pollutants Subclinical Sjögren's syndrome and anti-Ro/SSA-positive autoimmune fatigue syndrome in children (Springer) Fractal analysis and recurrence quantification analysis of heart rate and pulse transit time for diagnosing chronic fatigue syndrome (ImmuneSupport) Hemodynamic and neurohumoral responses to head-up tilt in patients with chronic fatigue syndrome (ImmuneSupport) Predictions and associations of fatigue syndromes and mood disorders that occur after infectious mononucleosis (ImmuneSupport) Evidence supporting zinc as an important antioxidant for skin (International Journal of Dermatology) Perceived odor and irritation of isopropanol (Springer) a comparison between naïve controls and occupationally exposed workers Researchers uncover clues to mechanism of pain sensitivity (Lancet) A Public Health Agenda for Traditional, Complementary, and Alternative Medicine
