1 3) Chronic orthostatic Intolerance and the postural tachycardia syndrome CirculatoryFindings in POTS and CFS. Variants of POTS are shown along with a http://www.nymc.edu/fhp/centers/syncope/POTS and COI.htm
Extractions: POTS and Chronic Orthostatic Intolerance H ome NIH Studies: CFS ... Search 3) Chronic Orthostatic Intolerance and the Postural Tachycardia Syndrome [Circulatory Findings in POTS and CFS] Variants of POTS a re shown along with a normal healthy control response to upright tilt. Classical POTS is shown with a rapid rise in heart rate and little fall in blood pressure. The study was terminated for intractable patient symptoms Patients with the syndrome display an unusual amount of pooling in the lower extremities often associated with acrocyanosis. It is likely that there are many physiologic mechanisms for POTS. The literature contains a number of potential explanations for abnormal venous pooling and fluid collection in POTS including impaired innervation of the veins or in their response to sympathetic stimulation. One such explanation favors an autonomic neuropathy that predominantly affects the lower extremities. " -adrenergic denervation hypersensitivity results. A second explanation invokes decreased - receptor sensitivity; a third
NEJM -- The Neuropathic Postural Tachycardia Syndrome Background The postural tachycardia syndrome is a common disorder that Reflex vascular defects in the orthostatic tachycardia syndrome of adolescents. http://content.nejm.org/cgi/content/abstract/343/14/1008
Extractions: Add to Personal Archive Add to Citation Manager ... PubMed Citation 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
Postural Orthostatic Tachycardia postural orthostatic tachycardia. Healthline Questions and Answers posturalorthostatic tachycardia syndrome patient s report on causes, symptoms, http://www.cannylink.com/diseaseposturalorthostatictachcardia.htm
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CFIDS postural tachycardia syndrome (POTS). Neurology. 1995;45S1925. posturalorthostatic tachycardia and chronic fatigue a distinct subset of http://www.cfids.org/about-cfids/orthostatic-intolerance.asp
Extractions: Symptoms Diagnosis Related Conditions Do I Have CFIDS? ... Profiles Diagnosis: Orthostatic Intolerance (OI) Orthostatic intolerance (OI) is the development of symptoms while standing or sitting upright. It has been associated with chronic fatigue and immune dysfunction syndrome (CFIDS) in both adults and children. The connection between OI and CFIDS was first introduced in 1995, by Rowe and associates at Johns Hopkins University, who identified neurally mediated hypotension (NMH) in CFIDS patients. Since 1995, scientists have learned much more about the broader problem of OI in CFIDS, of which NMH is just one form. It is now thought that many CFIDS patients (up to 97% in some studies) have some form of OI and it seems to be a particular problem in youth with CFIDS. Types of OI There are many types of OI, but two forms have been linked with CFIDS in research studies: NMH and postural orthostatic tachycardia syndrome (POTS). NMH is a precipitous drop (at least 20-25 mm Hg) in systolic blood pressure when standing. The blood pressure drop is accompanied or preceded by an increase in symptoms. POTS is a rapid increase in heart rate (pulse) of more than 30 beats per minute (bpm) from baseline, or to more than 120 bpm total, during the first 10 minutes of standing.
ORTHOSTATIC HYPOTENSION Positional orthostatic tachycardia (POT) syndrome. Here, the pulse races on standing . Quality of life in patients with postural tachycardia syndrome. http://www.dizziness-and-balance.com/disorders/medical/orthostatic.html
Extractions: ORTHOSTATIC HYPOTENSION Timothy C. Hain, MD. Please read our Return to Index Page last modified: September 4, 2005 Orthostasis means upright posture, and hypotension means low blood pressure. Thus, orthostatic hypotension consists of symptoms of dizziness, faintness or lightheadedness which appear only on standing, and which are caused by low blood pressure. Only rarely is spinning vertigo caused by orthostasis. Symptoms that often accompany orthostatic hypotension include chest pain, trouble holding the urine, impotence, and dry skin from loss of sweating. Blood pressure is maintained by a combination of several things. The heart is the central pump, and a weak or irregular heart can cause orthostasis. Conditions such as arrhythmia, heart failure, deconditioning, and pregnancy are examples where the heart may not be up to the task of providing an adequate blood pressure. The heart pumps blood, and if there is too little blood volume (anemia, dehydration, dialysis), the pressure drops. The blood vessels in the body also can squeeze (constrict) to raise blood pressure, and if this action is paralyzed, blood pressure may fall. Numerous medications affect blood vessels including most of the medications used for blood pressure, and many of the medications used in psychiatry and for anginal heart pain. Heat, such as a hot shower or from a fever can also dilate blood vessels and cause orthostasis. The nervous system senses and responds to regulate blood pressure. If something is wrong in this control system, blood pressure may fluctuate.
Extractions: PDF (94 K) References (17) View full size inline images Anesthesiology Volume 93(2) August 2000 pp 571-573 Mchaourab, Ali M.D.*; Mazzeo, Anthony J. M.D.â ; May, Judith A. M.D.â ; Pagel, Paul S. M.D., Ph.D.â¡ *Resident. â Assistant Professor. â¡Professor and Director of Cardiac Anesthesia. Individual article reprints may be purchased through the Journal Web site, http://www.anesthesiology.org Received from the Department of Anesthesiology, the Medical College of Wisconsin and the Clement J. Zablocki Veterans Affairs Medical Center, Milwaukee, Wisconsin. Submitted for publication December 16, 1999. Accepted for publication April 3, 2000. Address reprint requests to Dr. Pagel: Department of Anesthesiology, Medical College of Wisconsin, MEB-M4280, 8701 Watertown Plank Road, Milwaukee, Wisconsin 53226. Address electronic mail to: atredeau@mcw.edu ORTHOSTATIC intolerance syndrome is an unusual autonomic nervous system disorder characterized by episodic or postural tachycardia that occurs independent of alterations in arterial blood pressure and is associated with symptoms that include palpitations, tremulousness, light-headedness, fatigue, and syncope.
Extractions: This Article Abstract Full Text (PDF) P ... Citation Map Services E-mail this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal ... Cited by other online articles PubMed PubMed Citation Articles by Stewart, J. M. Articles by Munoz, J. Related Collections Office Practice PEDIATRICS Vol. 103 No. 1 January 1999, pp. 116-121 Julian M. Stewart Michael H. Gewitz Amy Weldon Nina Arlievsky Karl Li and Jose Munoz From the Department of Pediatrics, Divisions of Cardiology, and Immunology and Infectious Disease, New York Medical College, Valhalla, New York.
Postural Tachycardia Syn (POTS) TI Comparison of the postural tachycardia syndrome (POTS) with orthostatichypotension orthostatic dizziness, tremulousness, tachycardia and variable http://neuro-www.mgh.harvard.edu/neurowebforum/AutonomicArticles/1.15.9710.47PMP
Extractions: This Article Full Text Full Text (PDF) Alert me when this article is cited ... Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in ISI Web of Science Similar articles in PubMed ... Cited by other online articles Search for citing articles in: ISI Web of Science (12) PubMed PubMed Citation Articles by Stewart, J. M. Articles by Weldon, A. Vol. 89, Issue 4, 1505-1512, October 2000 Julian M. Stewart and Amy Weldon Departments of Pediatrics and Physiology, Center for Pediatric Hypotension, New York Medical College, Valhalla, New York 10595 Chronic orthostatic intolerance is often related to the postural orthostatic tachycardia syndrome (POTS). POTS is characterized by upright tachycardia. Understanding of its pathophysiology remains
Mayo Clinic Proceedings Comparison of the postural tachycardia syndrome (POTS) with orthostatic hypotensiondue to autonomic failure. J Auton Nerv Syst. 1994;50181188. http://www.mayoclinicproceedings.com/inside.asp?AID=54&UID=
The American Journal Of The Medical Sciences I. Idiopathic orthostatic intolerance and postural tachycardia syndromes. The orthostatic tachycardia syndrome evaluation of autonomic function and http://www.cfids-cab.org/MESA/Streeten.html
Extractions: The American Journal of the Medical Sciences Volume 320(1) July 2000 pp 1-8 Streeten, David H. P. MB, DPhil, FRCP; Thomas, Deaver MD; Bell, David S. MD From the Departments of Medicine (ds) and Radiology (dt), State University of New York Health Science Center, Syracuse, New York; and private practice (dsb), Lyndonville, New York. Supported by the Clinical Research Unit of the SUNY Health Science Center, Syracuse, and by a grant from the Wahrsager Foundation. Submitted September 24, 1999; accepted in revised form December 17, 1999. Correspondence: David H.P. Streeten, M.B., D.Phil., Department of Medicine, SUNY Health Science Center, 750 E. Adams Street, Syracuse, NY 13210, phone (315) 464-5722, FAX (315) 464-5718. Background: Orthostatic hypotension during upright tilt is an important physical disorder in patients with chronic fatigue syndrome. We have tested its occurrence during prolonged standing, whether it is correctable, and whether reduced circulating erythrocyte volume is present. Methods : Fifteen patients were randomly selected from a large population of patients with chronic fatigue syndrome, studied, and observed for several years (by DSB). Blood pressure (BP) and heart rate (HR) measured with Dinamap every minute for 30 minutes supine and 60 minutes standing were compared with these findings in 15 healthy age- and gender-matched control subjects and later during lower body compression with military antishock trousers (MAST). Plasma catecholamines and circulating erythrocyte and plasma volumes were also measured by isotopic dilution methods.
Extractions: ISI Web of Science (3) PubMed PubMed Citation Articles by Stewart, J. M. Articles by Montgomery, L. D. Julian M. Stewart, Marvin S. Medow, and Leslie D. Montgomery Department of Pediatrics and Physiology, New York Medical College, Valhalla, New York 10595; and LDM Associates, San Jose, California 95126 Submitted 6 May 2003 ; accepted in final form 7 August 2003
Extractions: Submit a response Alert me when this article is cited Alert me when Correspondence are posted ... Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal ... Cited by other online articles PubMed PubMed Citation Articles by Low, P. A. Articles by Rummans, T. A. Postural tachycardia syndrome (POTS) PA Low, TL Opfer-Gehrking, SC Textor, EE Benarroch, WK Shen, R Schondorf, GA Suarez and TA Rummans Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA. In orthostatic intolerance, the patient develops symptoms while standing that are relieved when the patient assumes a supine position. Different degrees of orthostatic intolerance exist, but not a system of grading severity. We have developed a system that grades the severity of orthostatic intolerance by the three-pronged criteria of the rapidity of development and the severity of orthostatic symptoms, the ability of the
Neurology -- Sign In Page orthostatic headaches without CSF leak in postural tachycardia syndrome Instead, they were found to have postural tachycardia syndrome (POTS), http://www.neurology.org/cgi/content/full/61/7/980
Extractions: This Article Abstract Full Text (PDF) Correspondence: ... 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 Mokri, B. Articles by Low, P. A. Related Collections Autonomic diseases
Extractions: 01.CIR.0000070951.93566.FCv1 Alert me when this article is cited Alert me if a correction is posted Citation Map 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 Stewart, J. M. Related Collections Autonomic, reflex, and neurohumoral control of circulation Circulation. Julian M. Stewart, MD, PhD From the Department of Pediatrics and Physiology, New York Medical College, Valhalla, NY. Correspondence to Julian M. Stewart, MD, PhD, Professor of Pediatrics and Physiology, Suite 618, Munger Pavilion, New York Medical College, Valhalla, NY 10595. E-mail
Extractions: 01.HYP.0000158259.68614.40v1 Alert me when this article is cited Alert me if a correction is posted Citation Map 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 Shibao, C. Articles by Biaggioni, I. Related Collections Other hypertension From the Division of Clinical Pharmacology, Department of Medicine and Pharmacology, and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tenn. Correspondence to Italo Biaggioni, MD, 1500 21st Ave S, Suite 3500, Clinical Trials Center, Vanderbilt University, Nashville, TN 37212. E-mail
Extractions: 01.HYP.0000158259.68614.40v1 Alert me when this article is cited Alert me if a correction is posted Citation Map 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 Shibao, C. Articles by Biaggioni, I. Related Collections Other hypertension From the Division of Clinical Pharmacology, Department of Medicine and Pharmacology, and the Autonomic Dysfunction Center, Vanderbilt University School of Medicine, Nashville, Tenn. Correspondence to Italo Biaggioni, MD, 1500 21st Ave S, Suite 3500, Clinical Trials Center, Vanderbilt University, Nashville, TN 37212. E-mail
Extractions: HOME HELP FEEDBACK SUBSCRIPTIONS ... TABLE OF CONTENTS This Article Submit a related Letter to the Editor Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted ... Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal ... Cited by other online articles PubMed PubMed Citation Articles by Hoeldtke, R. D. Articles by Davis, K. M. RD Hoeldtke and KM Davis Department of Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania 19140. Orthostatic tachycardia is a poorly understood syndrome in which patients develop dizziness, diaphoresis, or palpitations upon shifting from the supine to the upright posture. The present study was performed to determine whether autonomic neuropathy might be present in these patients, and whether the abnormal hemodynamic response to standing might be the result of failure of reflex vasoconstriction. We measured autonomic function in 9
Extractions: HOME HELP FEEDBACK SUBSCRIPTIONS ... Order this book! This Article Full Text Full Text (PDF) Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager ... Cited by other online articles PubMed PubMed Citation Articles by ROBERTSON, D. Articles by BIAGGIONI, I. Related Collections Cardiovascular System Annals of the New York Academy of Sciences
JW Neurology -- Sign In postural tachycardia syndrome (POTS) is characterized by orthostatic tachycardiaand symptoms of intolerance without orthostatic hypotension. http://neuro.jwatch.org/cgi/content/full/2000/1122/4
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