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Topic: Postural orthostatic tachycardia syndrome

	Postural Orthostatic Tachycardia Syndrome, Patient's Report
		Orthostatic intolerance, a broad title for blood pressure abnormalities such as neurally mediated hypotension (NMH) and POTS, is a common symptom of some types of CFS.
		Postural intolerance has been likened to a fever in that it is a symptom which can have many diverse root causes, both central and peripheral.
		Astronauts often develop a temporary form of orthostatic tachycardia upon returning to earth due to the deconditioning effects of weightlessness, which are quite similar to prolonged bed rest.
	home.att.net /~potsweb/POTS.html (5526 words)

	Tachycardia
		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.
		Tachycardia, as applied in adult medicine, is defined as a heart rate of over 100 beats per minute (BPM).
	www.ebroadcast.com.au /lookup/encyclopedia/ta/Tachycardia.html (100 words)

	Treatment of Postural Orthostatic Tachycardia Syndrome and Inappropriate Sinus Tachycardia
		Postural orthostatic tachycardia syndrome (POTS) is defined as a complex syndrome with clinical manifestations of orthostatic intolerance with symptoms of lightheadedness, fatigue, signs of edema, and acrocyanosis associated with orthostatic tachycardia within 10 minutes of upright posture and without significant orthostatic hypotension [1].
		Postural orthostatic tachycardia syndrome is often manifested by a state of orthostatic intolerance, which is defined as provocation of symptoms upon standing, such as exercise intolerance, extreme fatigue, lightheadedness, lack of concentration, tremors, nausea, headache, near syncope, and occasionally syncope.
		Postural orthostatic tachycardia syndrome has been categorized into a primary form for which no cause has been found, and a secondary form, which is usually associated with a particular disease [4].
	www.current-reports.com /article.cfm?PubID=CR05-5-2-04&Type=Article&KeyWords= (3626 words)

	CFIDS
		Stewart J.M., Weldon A. Vascular perturbations in the chronic orthostatic intolerance of the postural orthostatic tachycardia syndrome.
		The roles of orthostatic hypotension, orthostatic tachycardia, and subnormal erythrocyte volume in the pathogenesis of the chronic fatigue syndrome.
		Postural orthostatic tachycardia and chronic fatigue: a distinct subset of neurally-mediated syncope in adolescents (abstract).
	www.cfids.org /about-cfids/orthostatic-intolerance.asp (1563 words)

	Supraventricular Arrhythmias Guideline Update
		Postural orthostatic tachycardia syndrome is part of a wide spectrum of disorders that exhibit autonomic dysfunction (142).
		Sinus node re-entry tachycardia is diagnosed on the basis of invasive and noninvasive criteria (128).
		Nonparoxysmal junctional tachycardia is a benign arrhythmia that is characterized by a narrow complex tachycardia with rates of 70 to 120 bpm.
	www.acc.org /qualityandscience/clinical/guidelines/arrhythmias/V_specific.htm (12098 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal
		Postural orthostatic tachycardia syndrome (or POTS) is a condition of orthostatic intolerance in which a change from the supine position to an upright position causes an abnormally large increase in heart rate, often, but not always accompanied by a fall in blood pressure.
		The syndrome was identified as such by Schondorf and Low in 1993.
		Inappropriate sinus tachycardia must also be considered as there is an overlap in symptoms of IST and POTS.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=postural_orthostatic_tachycardia_syndrome (343 words)

	Postural Orthostatic Tachycardia Syndrome Treatment and Symptoms
		Postural orthostatic tachycardia syndrome (or POTS) is a condition of orthostatic intolerance in which a change from the supine position to an upright position causes an abnormally high increase in heart rate.
		Postural orthostatic tachycardia syndrome (or POTS) is a condition of orthos...
		Postural tachycardia syndrome (POTS) is a disorder characterized by a pulse rate that is too fast when the patient stands.
	goldbamboo.com /topic-t3439.html (221 words)

	AHMF: Guidelines response Rowe
		For those with postural tachycardia syndrome, a number of physiological studies and case series have suggested avenues of treatment that might prove beneficial, although I am aware of no randomized trials on this disorder.
		Although the optimal treatment of recurrent neurally mediated syncope or postural tachycardia is the subject of debate, few physicians would withhold therapy from those with serious orthostatic symptoms, even if that therapy only involved adding sodium to the diet and recommending support hose.
		Prolonged orthostatic testing to exclude postural tachycardia syndrome or neurally mediated (vaso-vagal) hypotension may be appropriate in those whose symptoms are aggravated by several minutes of quiet upright posture.
	www.ahmf.org /g-rowe.html (1537 words)

	Orthostatic Hypotension: Approach to the Cardiac Patient: Merck Manual Professional
		Orthostatic hypotension is a manifestation of abnormal BP regulation due to various conditions, not a specific disorder.
		Orthostatic hypotension occurs in about 20% of the elderly; it is more common among those with coexisting disorders, especially hypertension, and among residents of long-term care facilities.
		Orthostatic hypotension is diagnosed when a marked fall in measured BP and symptoms suggesting hypotension are provoked by standing and relieved by lying down.
	www.merck.com /mmpe/print/sec07/ch069/ch069d.html (1082 words)

	Postural Orthostatic Tachycardia Syndrome - Ask Dr Wiki
		POTS must be distinguished from Inappropriate Sinus Tachycardia (IST) because their respective treatments can exagerate the symptoms of the other syndrome.
		Grade 1 - Orthostatic symptoms are infrequent and occur with increased orthostatic stress.
		This is a genetic disorder in which a single mutation creates a dysfunctional reuptake transporter protein that clears norepinephrine from the intrasynaptic cleft and, therefore, leads to a spillover of this catecholamine in the bloodstream.
	www.askdrwiki.com /mediawiki/index.php?title=Postural_Orthostatic_Tachycardia_Syndrome (694 words)

	Postural orthostatic tachycardia syndrome - Wikipedia, the free encyclopedia
		Postural orthostatic tachycardia syndrome (or POTS) is a condition of orthostatic intolerance in which a change from the supine position to an upright position causes an abnormally large increase in heart rate, often, but not always accompanied by a fall in blood pressure.
		The syndrome was identified as such by Schondorf and Low in 1993.
		Inappropriate sinus tachycardia must also be considered as there is an overlap in symptoms of IST and POTS.
	en.wikipedia.org /wiki/Postural_orthostatic_tachycardia_syndrome (378 words)

	Postural Tachycardia Syndrome
		Upright posture is a fundamental human activity requiring rapid and effective circulatory and neurologic compensations in order to maintain blood pressure and consciousness.
		The orthostatic tachycardia syndrome is a disabling disease state described at least since 1940 and is the most common reason for referral for chronic orthostatic intolerance.
		Patterns of heart rate and blood pressure variation are shown in the figure and are from our paper which was the first to directly discuss POTS in the pediatric population.
	www.nymc.edu /fhp/centers/syncope/POTS.htm (703 words)

	Vasovagal Syncope and Related Disorders - April 1, 2000 - American Academy of Family Physicians
		In patients with vasovagal syncope, the initial cardiovascular response to an upright posture appears to be relatively normal.
		Patients with this condition are unable to compensate for the acute decrease in venous return that occurs with upright position, causing orthostatic hypotension.
		Orthostatic hypotension can be treated with volume expansion therapy with salt and fludrocortisone and vasoconstrictor therapy with midodrine.
	www.aafp.org /afp/20000401/tips/9.html (769 words)

	Postural Orthostatic Tachycardia Syndrome --The Doctors Lounge(TM)
		Postural orthostatic Tachycardia syndrome is most probably caused by some kind of autonomic nervous system dysfunction.
		These are used a lot in patients with orthostatic hypotension (low blood pressure when patients assumes the standing position) and it proves to be very helpful in most of the cases.
		And since pots is most probably a part of the spectrum of orthostatic hypotension, I would encourage you to discuss this with your doctor and see what he thinks about you wearing the stockings.
	www.thedoctorslounge.net /cardiology/forums/backup/topic-5274.html (582 words)

	AHMF: 98 Conference: Rowe
		These overlapping syndromes have been variously termed neurally mediated (or vaso-vagal) hypotension, delayed orthostatic hypotension, postural orthostatic tachycardia syndrome, and idiopathic hypovolemia.
		These authors described a syndrome of excessive elevation in heart rate with upright posture seemed identical to "effort syndrome, irritable heart or neurocirculatory asthenia" (JAMA 1940;115:2162-7).
		In response to quiet upright posture, all 50 subjects developed at least four orthostatic symptoms within the first 45 minutes, including fatigue 82%, lightheadedness 78%, non-headache pain 70%, and nausea 62%.
	www.ahmf.org /98rowe.html (512 words)

	Rehabilitex, Inc. \| Postural Orthostatic Tachycardia Syndrome (POTS) (Site not responding. Last check: 2007-10-11)
		The HUT is a passive orthostatic stress test used to evoke autonomic reflexes and vascular responses.
		Overloading the stomach decreases orthostatic tolerance by drawing blood to the digestive tract and away from the main arteries that feed the brain.
		Astronauts often develop a temporary form of orthostatic tachycardia (rapid heart rate) upon returning to earth due to the deconditioning effect of weightlessness, which is quite similar to prolonged bedrest.
	www.rehabilitex.com /pots.html (1682 words)

	Cogprints - The Postural Tachycardia Syndrome (POTS): Pathophysiology, Diagnosis & Management (Site not responding. Last check: 2007-10-11)
		Postural tachycardia syndrome (POTS), characterized by orthostatic tachycardia in the absence of orthostatic hypotension, has been the focus of increasing clinical interest over the last 15 years 1.
		Vascular responsiveness to norepinephrine in sympathicotonic orthostatic intolerance.
		Orthostatic intolerance and orthostatic tachycardia: a heterogeneous disorder.
	cogprints.org /4802 (931 words)

	UpToDate Sinus tachycardia
		— Sinus tachycardia is a rhythm in which the rate of impulses arising from the SA node is elevated.
		The resting sinus rate in older children [1] and adults [2] is approximately 65 to 85 beats/min with some authors suggesting a slowing in older age [3].
		— The most common causes of sinus tachycardia are the normal response to exercise and conditions in which catecholamine release is physiologically enhanced — flight, fright, anger, or stress.
	patients.uptodate.com /topic.asp?file=carrhyth/9678&title=undefined (395 words)

	eMedicine - Autonomic Neuropathy : Article Excerpt by: Cory Toth, BSc, MD, FRCPC, CSCN (Site not responding. Last check: 2007-10-11)
		For example, diabetic neuropathies are associated with somatic and autonomic C-fiber impairment, while neuropathic postural tachycardia syndrome is associated with selective distal autonomic deficit (Singer, 2004).
		Postural orthostatic tachycardia syndrome (POTS) is a syndrome most common in young females with orthostatic intolerance characterized by palpitations with excessive orthostatic sinus tachycardia, sensation of lightheadedness, and near-syncope.
		Guillain-Barré syndrome (GBS), or acute inflammatory demyelinating polyneuropathy (AIDP), is an acute autoimmune somatic neuropathy commonly associated with prominent autonomic dysfunction that can lead to both morbidity and mortality (Zochodne, 1994, Panagyres, 1989).
	www.emedicine.com /neuro/byname/autonomic-neuropathy.htm (548 words)

	Helpful links
		Postural orthostatic tachycardia syndrome: anesthetic implications in the obstetric patient:
		The prevalence and significance of post-exercise (postural) hypotension in ultramarathon runners:
		Vascular perturbations in the chronic orthostatic intolerance of the postural orthostatic tachycardia syndrome:
	www.dinet.org /links.htm (1174 words)

	Pots: An Overview
		When the body cannot effectively adjust to upright posture a person is said to have orthostatic intolerance.
		Postural orthostatic tachycardia syndrome (POTS) is a disorder characterized by orthostatic intolerance.
		Postural orthostatic tachycardia syndrome is defined by excessive heart rate increments upon upright posture.
	www.dinet.org /pots_an_overview.htm (796 words)

	Pharmacokinetics of Pyridostigmine in a Child With Postural Tachycardia Syndrome -- Filler et al. 118 (5): e1563 -- ...
		Pharmacokinetics of Pyridostigmine in a Child With Postural Tachycardia Syndrome -- Filler et al.
		Pharmacokinetics of Pyridostigmine in a Child With Postural Tachycardia Syndrome
		orthostatic tachycardia syndrome in adults at a dose of 60 mg
	pediatrics.aappublications.org /cgi/content/abstract/118/5/e1563?rss=1 (286 words)

	Postural Orthostatic Tachycardia Syndrome
		One group of diseases includes those of autonomic regulation, among them Postural Orthostatic Tachycardia Syndrome (POTS), considered to be a part of the autonomic nervous system dysfunction that includes vasovagal syncope.
		There may also be a crossover with chronic fatigue syndrome, and in fact, in one of the reports on using tilt table testing to evaluate children with chronic fatigue syndrome six of the seven patients were female.
		In summary, POTS appears to be an autonomic disorder characterized by inappropriate catecholamine response to orthostatic stress, often triggered by viral illnesses or other physiologic stressors, and with a particular female preponderance.
	www.womensheartfoundation.org /content/Newsletter/ArchivedArticles/2001_05_article_PosturalOrthostaticTachycardia.asp (438 words)

	coi
		The fast heart beat typical of upright posture in COI is called "tachycardia." This is why the condition is often called Postural Tachycardia Syndrome.
		Postural Orthostatic Tachycardia Syndrome gives an excellent overview of dysautonomia and is particularly strong in explaining cervical stenosis and Chiari Malformation.
		Ehlers-Danlos Syndrome is an inherited condition in which many tissues in the body (often including blood vessels) are fragile and overly stretchy.
	home.bluecrab.org /~health/coi/coi.html (841 words)

	Autonomic Question April 1999
		Chelimsky: Postural orthostatic tachycardia syndrome (POTS) is quite common in and of itself.
		It usually occurs after a viral syndrome ("flu") but may occur without any heralding event, or may also be inherited (check to see if you have relatives with milder similar symptoms).
		I recommend them generally for anyone who has peripheral nerve damage of any cause (eg diabetes, cancer, Guillain-Barré,etc...), and therefore recommend them for people with orthostatic hypotension on the assumption that some of their problem may be due to degeneration of the nerves which control the blood vessels (autonomicnerves).
	casemed.case.edu /dept/autonomic/ANSQUEST/ans0499.htm (1035 words)

	NEUROLOGICAL DISORDERS - Postural Tachycardia Syndrome (Chronic Orthostatic Intolerance, Postural Orthostatic ...
		NEUROLOGICAL DISORDERS - Postural Tachycardia Syndrome (Chronic Orthostatic Intolerance, Postural Orthostatic Tachycardia Syndrome)
		Postural Tachycardia Syndrome (Chronic Orthostatic Intolerance, Postural Orthostatic Tachycardia Syndrome)
		Postural tachycardia syndrome (POTS) is a disorder characterised by a pulse rate that is too fast when the patient stands.
	medic8.com /neurological-disorders/postural-tachycardia-syndrome.htm (297 words)

	[No title]
		Orthostatic Intolerance (OI): a syndrome including neurally mediated hypotension, delayed orthostatic hypotension, and postural orthostatic tachycardia syndrome, all of which are considered forms of dysautonomia
		Orthostatic intolerance and chronic fatigue syndrome: new light on an old problem Editorial Peter C. Rowe, MD J Pediatr 2002; 140(4)
		Postural Tachycardia Syndrome by Julian Stewart, MD Definition of POTS.
	www.pediatricnetwork.org /medical/OI (640 words)

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