61. Tachycardia -- Facts, Info, And Encyclopedia Article When tachycardia occurs for this reason, it is called (Click link for more facts about postural orthostatic tachycardia syndrome) postural orthostatic http://www.absoluteastronomy.com/encyclopedia/t/ta/tachycardia.htm

Tachycardia [Categories: Cardiology] Tachycardia ? is an abnormally rapid beating of the (The hollow muscular organ located behind the sternum and between the lungs; its rhythmic contractions pump blood through the body) heart , defined as a resting (The rate at which the heart beats; usually measured to obtain a quick evaluation of a person's health) heart rate of over 100 beats per minute. It can have harmful effects in two ways. First, when the heart beats too rapidly, it performs inefficiently (since there is not enough time for the (One of four connected cavities in the brain; is continuous with the central canal of the spinal cord and contains cerebrospinal fluid) ventricle s to fill completely), causing blood flow and (The pressure of the circulating blood against the walls of the blood vessels; results from the systole of the left ventricle of the heart; sometimes measured for a quick evaluation of a person's health) blood pressure to diminish. Second, it increases the work of the heart, causing it to require more (A nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust)

62. STARS - Syncope Trust And Reflex Anoxic Seizures POTS Place A Guide to postural orthostatic tachycardia syndrome This web siteis about a disorder called postural orthostatic tachycardia syndrome (POTS). http://www.stars.org.uk/links.html

STARS - S yncope T rust A nd R eflex anoxic S eizures Links Please Note: While we may recommend sites to you, we CANNOT be held responsible for information that you may collect from these sites. UK based groups: Arrhythmia Alliance Arrhythmia Alliance was launched at the start of Arrhythmia Awareness Week. We see the Arrhythmia Alliance as the obvious onward development from the AAAW, to maintain momentum, and to bring together allied parties, large and small, professional and lay, to funnel their energies toward common arrhythmia goals together. Arrhythmia Awareness Week Arrhythmia Awareness Week is a campaign that aims to improve the quality of life for people living with Cardiac Arrhythmias. Barton Hill Advice Service Barton Hill Advice Service, based in Bristol, have produced two really helpful booklets which give clear, step-by-step guidelines on how to apply for Disability Living Allowance. Contact a Family Every day over sixty children in the UK are born or diagnosed with a serious disability and the vast majority of them are cared for at home. Contact a Family (CaF) is the only UK charity providing support and advice to parents whatever the medical condition of their child. Facilitate delivery of more integrated cardiac care across the Network area.

63. Journal Of Pediatric Gastroenterology And Nutrition - UserLogin Number of patients with postural orthostatic tachycardia syndrome and/or neurallymediated Orthostatic intolerance; Postural tachycardia syndrome; http://www.jpgn.org/pt/re/jpgn/fulltext.00005176-200504000-00005.htm

64. Medicine & Science In Sports & Exercise - UserLogin Mitral valve prolapse syndrome, postural orthostatic tachycardia syndrome(POTS),idiopathic hypovolemia, and vasoregulatory asthenia all have features in http://www.ms-se.com/pt/re/msse/fulltext.00005768-199610000-00038.htm

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65. Cardiology In Review - UserLogin Neurally mediated syncope and postural orthostatic tachycardia syndrome (POTS)are the two most frequent causes of syncope. In patients with severe symptoms http://www.cardiologyinreview.com/pt/re/cardiorev/fulltext.00045415-200111000-00

LWWOnline LOGIN eALERTS REGISTER ... Archive You are attempting to access protected content. To access this content please login using an established account or create/activate an account. If you have already created/ activated an online account, please login below: User Name: Password: Note: passwords are CASE SENSITIVE If you are a new user or guest visiting an LWWonline site for the first time, please complete the new account setup process to view or purchase content. Forgot your password? Subscribe Renewal Information Subscribe to RSS feed utrdc-pt02 Release 4.0

66. Curry:Kinesiology:Sports Medicine / Athletic Training: Graduate Students postural orthostatic tachycardia syndrome in a Female High School BasketballAthlete A case report. Flavell AP, Kowalski JL. 57th Annual Eastern Athletic http://curry.edschool.virginia.edu/kinesiology/sprtmed/medclass0506.html

National Athletic Trainers' Association Accredited Graduate Athletic Training Program Current Students 2005-2006 James Day Lindsay Drewes Andrew P. Flavell Brian A. Friscia ... Shelley N. Wadsworth Previous Classes James Day jrd9a@virginia.edu Hometown: Coeur d'Alene, ID Undergraduate: Eastern Washington University GA Assignment: UVA Cross Country/Track/Golf Research Interests: Neuropsychological Computerized Testing of Concussions Graduation Plans: Become an assistant athletic trainer for a college/university Top Lindsay Drewes lkd4d@virginia.edu Hometown: Rochester Hills, NY Undergraduate: Albion College, Albion, MI GA Assignment: UVA Field Hockey Research Interests: Movement Variability in Injured Athletes Graduation Plans: To work with athletes in action and their international sports tours or sports medicine clinicls overseas.

67. ScienceDaily -- Browse Topics: Health/Conditions_and_Diseases/Neurological_Disor More news about postural orthostatic tachycardia syndrome Postural OrthostaticTachycardia Syndrome A definition of POTS and its relation to Chronic http://www.sciencedaily.com/directory/Health/Conditions_and_Diseases/Neurologica

@import "/styles/navbar.css"; @import "/styles/tabStyles.css"; Set home page Bookmark site Add search Latest News ... Email to friend Text Size A A A Front Page ... Dysautonomia : Postural Orthostatic Tachycardia Syndrome Subtopics See Also: Health: Conditions and Diseases: Cardiovascular Disorders: Hypotension Search Google: Postural Orthostatic Tachycardia Syndrome News Books Links ... UF Scientist Finds Unexpected Link Between Cat And Human AIDS Viruses (September 9, 2005) full story Mayo Clinic Develops New Coma Measurement System (September 8, 2005) full story Nitric Oxide Could Extend Fertility (September 8, 2005) Biochemistry , an American Chemical Society journal. full story Flipped, Expelled, Copied, And Shrunk: Researchers Document Dramatic Genome Alterations During Primate Evolution (September 6, 2005) Genome Research presents a series of studies that provide insight into the evolution and variation of primate genomes. The issue will appear online and in print on September 1, concomitant with the publication of the chimpanzee genome sequence in the journal Nature full story Discovery Will Aid Identification Of Misregulated Genes In Rett Syndrome (September 4, 2005)

68. The Analyst - Internet Health Report: Condition: Fainting / Syncope Chronic Orthostatic Intolerance and the postural orthostatic tachycardia syndromeThe orthostatic tachycardia syndrome is a disabling disease state http://www.digitalnaturopath.com/cond/C629481.html

Fainting / Syncope Last updated: Aug 31, 2005 THE ANALYST TM Home FAQ Start The Analyst Fainting / Syncope Contributing risk factors Recommendations Syncope (fainting) is a common although disturbing experience. It is the sudden transient loss of consciousness with loss of postural tone caused by impaired blood flow to the central nervous system . Recovery is usually spontaneous when lying down. Syncope may occur even while lying down or standing upright and under a wide variety of conditions. It may be due to medication, cardiac disease (usually arrhythmia ), or severe impairment of cardiac blood flow by mechanical pump failure or obstruction. It may be due to transient impairment of central nervous system function as in a transient ischemic attack TIA, but this is less common. Although convulsive like movements may occur during fainting, it is distinct from a seizure disorder. Cardiac syncope is often quite serious and should be regarded as life threatening. When specific cardiac disease is found, it is treated specifically. However, the large majority of exercise related syncope cases are non cardiogenic in origin, at least for children and adolescents. Approximately 90% of syncope in children is either neurocardiogenic (also known as vasovagal syncope) or unexplained. Often the unexplained variety is reclassified as neurocardiogenic once tilt table testing has been performed. Neurocardiogenic is the current term for fainting mediated through a combination of inappropriate vascular (blood vessel) and heart rate control. Almost all of neurocardiogenic syncope in children can be deemed vasovagal (‘vaso’ denoting widening of blood vessels, and ‘vagal’ slowing of the heart rate through stimulation of the vagus nerve). On the other hand, adult syncope is much more likely to be cardiogenic, about 50% of the time. Since vasovagal syncope almost always occurs in the upright position, which may sometimes include sitting, it is regarded as a form of orthostatic intolerance.

69. Baroreflex Control Of Muscle Sympathetic Nerve Activity In The Postural Orthosta postural orthostatic tachycardia syndrome (POTS) is characterized by excessivetachycardia during orthostasis. To test the hypothesis that patients with http://ajpheart.physiology.org/cgi/content/abstract/01243.2004v1

HOME HELP FEEDBACK SUBSCRIPTIONS ... SEARCH QUICK SEARCH: [advanced] Author: Keyword(s): Year: Vol: Page: Am J Physiol Heart Circ Physiol (April 29, 2005). doi:10.1152/ajpheart.01243.2004 This Article Full Text (PDF) All Versions of this Article: most recent Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal ... Download to citation manager PubMed PubMed Citation Articles by Muenter Swift, N. Articles by Low, P. A Submitted on December 8, 2004 Accepted on April 27, 2005 Baroreflex control of muscle sympathetic nerve activity in the postural orthostatic tachycardia syndrome Nicolette Muenter Swift Nisha Charkoudian Rose M Dotson Guillermo A Suarez and Phillip A Low Neurology, Mayo Clinic, Rochester, MN, USA Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA To whom correspondence should be addressed. E-mail: Postural orthostatic tachycardia syndrome (POTS) is characterized by excessive tachycardia during orthostasis. To test the hypothesis

70. Cardiac Arrhythmias postural orthostatic tachycardia syndrome. Being female protects us from earlyatherosclerotic heart disease. However, there are some clinical conditions http://www.womensheartfoundation.org/content/HeartDisease/cardiac_arrhythmias.as

Cardiac Arrhythmia Management: Why Women are Different from Men Electrical Explanation For Gender Differences The fact that women's hearts are wired differently from men's should come as no surprise. The development of every part of the body is determined genetically, and modified by the sex hormones. The fact that we develop so similarly should really surprise us. This is also true of the electrical system of the heart in women. The way that the heart works isthrough an electrical system that we can measure on the surface with the electrocardiogram (ECG). This detects the electrical activity of the top chambers of the heart, the atria, manifest by a p wave, followed by a sharp deflection, the QRS, which represents the electrical activity of the ventricles of the heart. Following the QRS, there is a recovery interval, marked on the ECG by a hump, and the distance between the beginning of the QRS and the end of this hump, the T wave, is called the QT interval. The electrical activity we see on the surface is created by the sequential, and sometimes simultaneous, activity of a number of channels in the muscle membranes of heart tissue to allow certain ions, such a sodium, calcium, potassium, and some chemicals, such as acetylcholine, and ATP (an energy molecule) to cross into or out of the cell. The structure of these channels is determined genetically, and to some degree, their genetic expression varies with gender. For example, in men, the QT interval is always shorter than it is in women. If the channels are the same chemicals, their activity is modified by factors related to gender. As children develop, the disparity becomes marked at around puberty. Genetic diseases, therefore, such as congenital long QT interval, become more marked in females with time, and it is not unusual to find congenital long QT syndrome as a cause of syncope and sudden death in young women, out of proportion to the incidence in young men and male children.

71. Vasovagal Syncope And Related Disorders - April 1, 2000 - American Academy Of Fa (POTS = postural orthostatic tachycardia syndrome; HR = heart rate; BP = bloodpressure; OH = orthostatic hypotension; HTN = hypertension; SSRI = selective http://www.aafp.org/afp/20000401/tips/9.html

Advanced Search Tips from Other Journals Previous Next Vasovagal Syncope and Related Disorders The management of patients in whom a primary abnormality in blood pressure regulation results in hypotension and loss of consciousness presents clinical challenges. The hypotension may be primary, or it may be secondary to a condition such as tachyarrhythmia or bradyarrhythmia. Vasovagal syncope describes this condition, as well as other conditions that are considered to be dysautonomic responses to upright posture, such as orthostatic hypotension and postural orthostatic tachycardia syndrome (POTS). Bloomfield and associates reviewed the pathophysiology of these two causes of syncope and developed an algorithm to guide diagnosis and treatment. see the accompanying figure on page 2212 Vasovagal Syncope and Related Disorders FIGURE. Vasovagal syncope and related disorders: a suggested algorithm for the diagnosis and treatment of vasovagal syncope and related disorders. (POTS = postural orthostatic tachycardia syndrome; HR = heart rate; BP = blood pressure; OH = orthostatic hypotension; HTN = hypertension; SSRI = selective serotonin reuptake inhibitors) Adapted with permission from Professional Postgraduate Services, a division of Physicians World Communications Group.

72. Circulation -- Sign In Page Idiopathic postural orthostatic tachycardia syndrome an attenuated form of acutepandysautonomia? Neurology. 1993; 43 132–137.Abstract http://circ.ahajournals.org/cgi/content/full/111/13/1574

This item requires a subscription to Circulation Online. Full Text Renin-Aldosterone Paradox and Perturbed Blood Volume Regulation Underlying Postural... Raj et al. Circulation. This Article Abstract Full Text (PDF) Data Supplement ... Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal ... Request Permissions PubMed PubMed Citation Articles by Raj, S. R. Articles by Robertson, D. Related Collections Clinical Studies Arrhythmias, clinical electrophysiology, drugs Autonomic, reflex, and neurohumoral control of circulation To view this item, select one of the options below: Sign In User Name Sign in without cookies. Can't get past this page? Help with Cookies. Need to Activate? Password Forgot your user name or password? Purchase Short-Term Access Pay per Article - You may access this article (from the computer you are currently using) for 1 day for US$15.00 Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.

73. FIRSTConsult - Sdfdsf Additionally, it may signal postural orthostatic tachycardia syndrome. Lack ofany increase is indicative of autonomic neuropathy * A cardiac examination http://www.firstconsult.com/?action=view_article&id=1014234&type=101&bref=1

74. Postgraduate Medicine: Clinical Cardiac Electrophysiology Symposium: Head-uprigh The postural orthostatic tachycardia syndrome a neurocardiogenic variant identifiedduring head up tilt table testing. Pacing Clin Electrophysiol (in http://www.postgradmed.com/issues/1998/01_98/grubb.htm

Head-upright tilt table testing A safe and easy way to assess neurocardiogenic syncope Blair P. Grubb, MD Sanford Kimmel, MD VOL 103 / NO 1 / JANUARY 1998 / POSTGRADUATE MEDICINE This page is best viewed with a browser that supports tables This is the fourth of four articles on clinical cardiac electrophysiology Preview : Tilt table testing has been used for more than 50 years to study the body's responses to various stimuli, but only recently has it become the "gold standard" for evaluation of symptoms of syncope. In this article, the authors discuss the expert consensus statement recently issued by the American College of Cardiology on when and how to evaluate patients with the technique. They also provide basic background information on syncope and summarize current understanding of neurocardiogenic (or vasovagal) syncope, which is one common type. S yncope, the transient loss of consciousness and postural tone, is common and produces tremendous anxiety among patients, their families, and treating physicians. The multitude of potential sources of the problem and the difficulty in determining an exact cause make evaluation of syncope a particularly challenging task. Over the last decade, there has been an enormous increase in knowledge concerning one common type of recurrent syncope: neurocardiogenic (or vasovagal). Overview of syncope and its evaluation Syncope accounts for 3% of emergency department visits and up to 6% of hospital admissions annually (1). It may be the only warning sign before an episode of sudden cardiac death. Even if the cause of the syncope is benign, its consequences may not be. Falls during syncope can result in fractures of the hips, extremities, face, and skull, and episodes while driving can be extremely dangerous. Periods of sudden, unpredictable loss of consciousness can put a tremendous psychological burden on both patients and their families and create a level of functional impairment similar to that produced by chronic debilitating disorders, such as rheumatoid arthritis (2).

75. JNNP -- Sign In Page The postural orthostatic tachycardia syndrome a neurocardiogenic variant identifiedduring headup tilt table testing. Pacing Clinical Electrophysiol 1997 http://jnnp.bmjjournals.com/cgi/content/full/76/7/1034

HOME HELP FEEDBACK SUBSCRIPTIONS ... SEARCH Author Keyword(s) Vol Page [Advanced] Access to this article requires a subscription or payment. Full Text Orthostatic intolerance and syncope associated with Chiari type I malformation Prilipko et al. J Neurol Neurosurg Psychiatry. To view this item, select one of the options below: Login via Athens Login for existing subscribers User Name Sign in without cookies. Can't get past this page? Help with Cookies. Need to Activate? Password Forgotten your user name or password? Subscribe Buy the article Pay per Article - You may access this article (from the computer you are currently using) for 2 days for US$12.00 SitePass - You may access all content in Journal of Neurology, Neurosurgery, and Psychiatry Online (from the computer you are currently using) for 30 days for US$30.00. Regain access to an already purchased article if the access period has not yet expired. This Article Abstract Full Text (PDF) Submit a response ... Alert me if a correction is posted Services Email this link to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal ... Download to citation manager PubMed PubMed Citation Articles by Prilipko, O

76. JAMA -- Abstract: The Relationship Between Neurally Mediated Hypotension And The ABSTRACT FULL TEXT. Vascular perturbations in the chronic orthostatic intoleranceof the postural orthostatic tachycardia syndrome Stewart and Weldon http://jama.ama-assn.org/cgi/content/abstract/274/12/961

Select Journal or Resource JAMA Archives of Dermatology Facial Plastic Surgery Family Medicine (1992-2000) General Psychiatry Internal Medicine Neurology Ophthalmology Surgery Student JAMA (1998-2004) JAMA CareerNet For The Media Meetings Peer Review Congress Vol. 274 No. 12, September 27, 1995 Featured Link E-mail Alerts ARTICLE Article Options Send to a Friend Similar articles in this journal Literature Track Add to File Drawer Download to Citation Manager PubMed citation Articles in PubMed by Bou-Holaigah I Calkins H Articles that cite this article Contact me when this article is cited The relationship between neurally mediated hypotension and the chronic fatigue syndrome I. Bou-Holaigah, P. C. Rowe, J. Kan and H. Calkins Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Md, USA. OBJECTIVETo compare the clinical symptoms and response evoked by upright tilt-table testing in healthy individuals and in a sample of those satisfying strict criteria for chronic fatigue syndrome. DESIGNCase-comparison study with mean (SD) follow-up of 24 (5) weeks.

77. 050302 Translate this page The postural orthostatic tachycardia syndrome current concepts in pathophysiologydiagnosis and management. J Interv Card Electrophysiol, 2001,59-16. http://www.wanfangdata.com.cn/qikan/periodical.Articles/zhek/zhek2005/0503/05030

78. NJIT ETD::njit-etd2003-084::Donnelly, Diane L.::"Study Of Baroreceptor Sensitivi five chronic fatigue syndrome with fibromyalgia (CFSFM), five control withpostural orthostatic tachycardia syndrome (CON-POTS) and five control (CON). http://www.library.njit.edu/etd/2000s/2003/njit-etd2003-084/njit-etd2003-084.htm

eTD Hompage Browse eTD's by Author Browse eTD's by Major Browse eTD's by Title ... Feedback Title: Study of baroreceptor sensitivity index in chronic fatigue syndrome Author: Donnelly, Diane L. Document Type: Thesis Department: Biomedical Engineering Committee Degree: Master of Science Major: Biomedical Engineering Advisory Committee: Rockland, Ronald H. Reisman, Stanley S. Quigley, Karen S. Thesis Date: 2003, August Keywords: Chronic fatigue syndrome Baroreceptor response Baroreflex sensitivity index (BRSI) Availability: Unrestricted Abstract: The sequence method was used to assess baroreflex function. Comparative time analyses were done of weighted BRSI values between groups as well as between lags within groups. Baroreflex effectiveness index, BEI, was also evaluated along with the total number of ramps and sequences within and between groups. Comparative time analysis provided a graphical representation of the behavior of the baroreflex during head-up tilt. Spikes in BRSI in the transitions between baseline and tilt and again between tilt and recovery were most noticeable for CFS-FM followed by CON-POTS and CFS-POTS. The CFS and CON groups were surprisingly similar in their behavior throughout the tilt. Differences between CON and CFS became graphically more apparent when evaluating BRSI by lag and calculating the percent change in sequences by lag. Slope of the weighted average for BRSI was calculated over a moving window of two-minute intervals. Based on this graph, slope does not appear to indicate a large difference between subject populations.

79. Deutsches Ärzteblatt: Archiv Schondorf R,Low PA Idiopathic postural orthostatic tachycardia syndrome an http://www.aerzteblatt.de/v4/archiv/lit.asp?id=39018

80. Dr Bell's New Research Based Theories POTS which is postural orthostatic tachycardia syndrome where the heart POTS (postural orthostatic tachycardia syndrome) is the same as neurally http://www.ncf-net.org/forum/restheory.html

DR. BELL'S NEW RESEARCH BASED THEORIES By Gail Kansky A slide was shown to an appreciative audience of a cartoon where a doctor is saying to the patient, You have a serious disease of undetermined nature. Although the cartoon has been used for many years, David S. Bell, M.D., world known pediatric and adult CFIDS specialist said, "This is what we're still dealing with." Although the symptoms all appear to be connected, they will "from week to week frequently change," said Dr. Bell. In his first 100 patients he saw, only 49% had fatigue as the dominant symptom yet a high 97% of the children and 92% of the adults had neurological symptoms. Doctors "invariably give the wrong first diagnosis. They think they're helping by being decisive but this has only caused heartache in this illness." Dr. Bell mentioned that he had "lot of problems with the criteria that the CDC put out in 1994. Indeed, the 'fatigue' is a very inadequate term to describe the symptom. The fatigue 'varies

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