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Postural orthostatic tachycardia

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https://www.readbyqxmd.com/read/27884959/cardiac-responses-to-exercise-distinguish-postural-orthostatic-tachycardia-syndrome-variants
#1
Paolo T Pianosi, Darrell R Schroeder, Philip R Fischer
We previously showed that one-third of adolescents with postural orthostatic tachycardia syndrome (POTS) have hyperkinetic circulation. In a subsequent cohort, we compare participants with POTS grouped according to cardiac output (Q˙) versus oxygen uptake (V˙O2) function, whose circulatory response to exercise lay at the lower end of this distribution. We hypothesized that such grouping determines the circulatory response to incremental-protocol, upright, cycle ergometry by whatever blend of flow and resistance adjustments best maintains normal blood pressure...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27867145/human-papillomavirus-vaccines-complex-regional-pain-syndrome-postural-orthostatic-tachycardia-syndrome-and-autonomic-dysfunction-a-review-of-the-regulatory-evidence-from-the-european-medicines-agency
#2
Tom Jefferson, Lars Jørgensen
Recent concerns about a possible association between exposure of young women to human papillomavirus (HPV) vaccines and two "dysautonomic syndromes" (a collection of signs and symptoms thought to be caused by autoimmunity) - complex regional pain syndrome (CRPS) and postural orthostatic tachycardia syndrome (POTS) - led the European Medicines Agency (EMA) to review existing evidence. The review was announced by the EMA on July 13, 2015, and was completed on November 4, 2015.
October 17, 2016: Indian Journal of Medical Ethics
https://www.readbyqxmd.com/read/27753886/ish-nia-os-01-the-microrna-mir-19a-3p-binds-to-a-polymorphism-in-the-gene-for-the-noradrenaline-transporter-and-may-increase-the-risk-of-cardiovascular-and-psychiatric-disease
#3
Francine Marques, Nina Eikelis, Richard Bayles, Nora Straznicky, Dagmara Hering, Murray Esler, Geoffrey Head, Markus Schlaich, Gavin Lambert
OBJECTIVE: Noradrenaline released from sympathetic nerves is removed from the neuroeffector junction via the action of the noradrenaline transporter (NET). NET impairment is evident in several clinically important conditions including essential hypertension, major depressive disorder, panic disorder and the postural orthostatic tachycardia syndrome. Only in rare instances, however, do coding single nucleotide polymorphisms (SNPs) seem to account for a defect in NET. The aim of this study was to determine whether rs7194256 (C/T), a SNP in the 3' untranslated region (UTR) of the NET gene, is associated with diseases associated with NET dysfunction, and to elucidate the mechanism involved...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27734621/clinical-approach-to-autonomic-dysfunction
#4
R Wells, A Tonkin
Patients with autonomic dysfunction may present with a variety of seemingly unrelated symptoms, both generalised and involving specific systems, including fatigue, difficulty concentrating, orthostatic intolerance, palpitations, constipation or diarrhoea, early satiety, urinary retention or incontinence and erectile dysfunction. Failure to connect the diverse symptoms with a single underlying mechanism may lead to incorrect diagnoses, inappropriate interventions and frustration on the part of both doctors and patients...
October 2016: Internal Medicine Journal
https://www.readbyqxmd.com/read/27729043/orthostatic-intolerance-symptoms-are-associated-with-depression-and-diminished-quality-of-life-in-patients-with-postural-tachycardia-syndrome
#5
Jangsup Moon, Do-Yong Kim, Jung-Ick Byun, Jun-Sang Sunwoo, Jung-Ah Lim, Tae-Joon Kim, Jung-Won Shin, Woo-Jin Lee, Han Sang Lee, Jin-Sun Jun, Kyung-Il Park, Keun-Hwa Jung, Soon-Tae Lee, Ki-Young Jung, Kon Chu, Sang Kun Lee
BACKGROUND: Patients with postural tachycardia syndrome often appear depressive and report diminished quality of life (QOL). In the current study, we first evaluated if the maximal heart rate (HR) increment after standing is associated with the clinical symptoms in patients with excessive orthostatic tachycardia (OT). Next, we investigated the correlations among the symptoms of orthostatic intolerance (OI), depression, and health-related QOL in these patients. Finally we assessed if patients with minimal OI symptoms suffer from depression or diminished QOL...
October 12, 2016: Health and Quality of Life Outcomes
https://www.readbyqxmd.com/read/27728664/postural-orthostatic-tachycardia-syndrome-in-a-case-of-benign-generalised-joint-hypermobilty
#6
V A Arun, Kaur Navjyot, Kumar Sharath V
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27696568/postural-orthostatic-tachycardia-is-not-a-useful-diagnostic-marker-for-chronic-fatigue-syndrome
#7
M E Roerink, J W M Lenders, I C Schmits, A M A Pistorius, J W Smit, H Knoop, J W M van der Meer
BACKGROUND: Postural orthostatic tachycardia syndrome (POTS) is considered a diagnostic marker for chronic fatigue syndrome (CFS). OBJECTIVES: The aims of this study were to (i) compare POTS prevalence in a CFS cohort with fatigued patients not meeting CFS criteria, and (ii) assess activity, impairment and response to cognitive behavioural therapy (CBT) in CFS patients with POTS (POTS-CFS) and without POTS (non-POTS-CFS). METHODS: Prospective cohort study at the Radboud University Medical Centre in the Netherlands...
October 2, 2016: Journal of Internal Medicine
https://www.readbyqxmd.com/read/27643232/ish-nia-os-01-the-microrna-mir-19a-3p-binds-to-a-polymorphism-in-the-gene-for-the-noradrenaline-transporter-and-may-increase-the-risk-of-cardiovascular-and-psychiatric-disease
#8
Francine Marques, Nina Eikelis, Richard Bayles, Nora Straznicky, Dagmara Hering, Murray Esler, Geoffrey Head, Markus Schlaich, Gavin Lambert
OBJECTIVE: Noradrenaline released from sympathetic nerves is removed from the neuroeffector junction via the action of the noradrenaline transporter (NET). NET impairment is evident in several clinically important conditions including essential hypertension, major depressive disorder, panic disorder and the postural orthostatic tachycardia syndrome. Only in rare instances, however, do coding single nucleotide polymorphisms (SNPs) seem to account for a defect in NET. The aim of this study was to determine whether rs7194256 (C/T), a SNP in the 3' untranslated region (UTR) of the NET gene, is associated with diseases associated with NET dysfunction, and to elucidate the mechanism involved...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27638661/current-safety-concerns-with-human-papillomavirus-vaccine-a-cluster-analysis-of-reports-in-vigibase-%C3%A2
#9
Rebecca E Chandler, Kristina Juhlin, Jonas Fransson, Ola Caster, I Ralph Edwards, G Niklas Norén
INTRODUCTION: A number of safety signals-complex regional pain syndrome (CRPS), postural orthostatic tachycardia syndrome (POTS), and chronic fatigue syndrome (CFS)-have emerged with human papillomavirus (HPV) vaccines, which share a similar pattern of symptomatology. Previous signal evaluations and epidemiological studies have largely relied on traditional methodologies and signals have been considered individually. OBJECTIVE: The aim of this study was to explore global reporting patterns for HPV vaccine for subgroups of reports with similar adverse event (AE) profiles...
September 16, 2016: Drug Safety: An International Journal of Medical Toxicology and Drug Experience
https://www.readbyqxmd.com/read/27631244/postural-orthostatic-tachycardia-syndrome-is-associated-with-platelet-storage-pool-deficiency
#10
William T Gunning, Beverly L Karabin, Thomas M Blomquist, Blair P Grubb
Mechanisms have been postulated to explain postural orthostatic tachycardia syndrome (POTS), however, the etiology of this often debilitating disorder remains unknown. We conducted a retrospective case-control study of 181 POTS patients who exhibited/reported bleeding symptoms for a specific platelet (PL) dysfunction disorder, delta granule storage pool deficiency (δ-SPD).Patients were included only if results of blood tests for δ-SPD were available. Electron microscopy was utilized to diagnose δ-SPD. An ELISA assay was used to determine serotonin (5HT) concentration in PLs and medical record review was employed to collect patients' clinical symptoms...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27625098/pathogenesis-and-individualized-treatment-for-postural-tachycardia-syndrome-in-children
#11
REVIEW
Wen-Rui Xu, Hong-Fang Jin, Jun-Bao Du
OBJECTIVE: Postural tachycardia syndrome (POTS) is one of the major causes of orthostatic intolerance in children. We systematically reviewed the pathogenesis and the progress of individualized treatment for POTS in children. DATA SOURCES: The data analyzed in this review are mainly from articles included in PubMed and EMBASE. STUDY SELECTION: The original articles and critical reviews about POTS were selected for this review. RESULTS: Studies have shown that POTS might be related to several factors including hypovolemia, high catecholamine status, abnormal local vascular tension, and decreased skeletal muscle pump activity...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27578452/postural-orthostatic-tachycardia-syndrome-for-the-otolaryngologist
#12
Jamie M Bogle, Brent P Goodman, David M Barrs
OBJECTIVE: To describe the postural orthostatic tachycardia syndrome (POTS), including clinical presentation, pathophysiology, diagnostic methods, and current management models. DATA SOURCES: PubMed, Cochrane Library were searched for articles available prior to October 30, 2015. METHODS: Review of the available English-language literature. RESULTS: Postural orthostatic tachycardia syndrome presentation is discussed, along with underlying associated physiology for POTS and recommended nonpharmacologic and pharmacologic management strategies...
August 31, 2016: Laryngoscope
https://www.readbyqxmd.com/read/27563801/droxidopa-in-the-treatment-of-postural-orthostatic-tachycardia-syndrome
#13
Mohammed Ruzieh, Osama Dasa, Ann Pacenta, Beverly Karabin, Blair Grubb
BACKGROUND: Postural orthostatic tachycardia syndrome (POTS) is a constellation of signs and symptoms that occur when a patient is upright and relieved by recumbence. Currently, no drugs are labeled for the treatment for POTS. Droxidopa is an orally administered amino acid that is converted to norepinephrine and thought to improve both blood pressure and symptoms in patients with orthostatic intolerance. STUDY QUESTION: To appraise the effect of Droxidopa in a clinical setting in patients with POTS refractory to other forms of treatment...
August 25, 2016: American Journal of Therapeutics
https://www.readbyqxmd.com/read/27558116/resolution-of-postural-orthostatic-tachycardia-syndrome-after-ct-guided-percutaneous-t2-ethanol-ablation-for-hyperhidrosis
#14
Malcolm Brock, Tae Hwan Chung, Sathvika Reddy Gaddam, Anjaneya Singh Kathait, Cecily Ober, Christos Georgiades
Postural orthostatic tachycardia syndrome is characterized by orthostatic intolerance. Orthostasis (or other mild physical stress) triggers a cascade of inappropriate tachycardia, lightheadedness, palpitations, and often fainting. The underlying defect is sympathetic dysregulation of the heart, which receives its sympathetic tone from the cervical and upper thoracic sympathetic ganglia. Primary hyperhidrosis is also thought to be the result of sympathetic dysregulation. We present the case of a patient treated with CT-guided, percutaneous T2 EtOH sympatholysis for craniofacial hyperhidrosis...
August 24, 2016: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/27525257/cerebral-blood-flow-heart-rate-and-blood-pressure-patterns-during-the-tilt-test-in-common-orthostatic-syndromes
#15
Peter Novak
Objective. The head-up tilt test is widely used for evaluation of orthostatic intolerance. Although orthostatic symptoms usually reflect cerebral hypoperfusion, the cerebral blood flow velocity (CBFv) profile in orthostatic syndromes is not well described. This study evaluated CBFv and cardiovascular patterns associated with the tilt test in common orthostatic syndromes. Methods. This retrospective study analyzed the tilt test of patients with history of orthostatic intolerance. The following signals were recorded: ECG, blood pressure, CBFv using transcranial Doppler, respiratory signals, and end tidal CO2...
2016: Neuroscience Journal
https://www.readbyqxmd.com/read/27496265/benign-joint-hypermobility-minimally-impacts-autonomic-abnormalities-in-pediatric-subjects-with-chronic-functional-pain-disorders
#16
Gisela Chelimsky, Katja Kovacic, Pippa Simpson, Melodee Nugent, Donald Basel, Julie Banda, Thomas Chelimsky
OBJECTIVE: To determine if children with benign joint hypermobility (BJH) syndrome and chronic functional pain disorders have more autonomic dysfunction. STUDY DESIGN: Retrospective chart review study of pediatric patients seen in the pediatric neurogastroenterology and autonomic clinic who underwent autonomic testing and had either a Beighton score of ≥6 and met Brighton criteria for BJH (with BJH) or a score of ≤2 (no BJH). RESULTS: Twenty-one female subjects (10 without BJH) met inclusion criteria; 64% of BJH had diagnosis confirmed by genetics consultation...
October 2016: Journal of Pediatrics
https://www.readbyqxmd.com/read/27460404/coexistence-of-congenital-long-qt-syndrome-and-autonomic-dysregulation-in-children
#17
Yoshiharu Ogawa, Takeshi Aiba, Naoya Kamei, Kenta Tominaga, Hideki Fujita, Yoshihiro Miyamoto, Toshikatsu Tanaka, Sachiko Kido
Loss of consciousness (LOC) in long QT syndrome (LQTS) patients can be caused by torsade de pointes (TdP) or vasovagal syncope (VVS). On genetic testing and head-up tilt testing (HUTT), we diagnosed three young patients with both genotyped LQTS and autonomic dysregulation. According to grade of prolongation of QT interval and LOC status, syncope episodes in two patients were classified as due to VVS, while those of the other patient were due to TdP. We also diagnosed one patient with postural orthostatic tachycardia syndrome...
July 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/27413567/cooccurrence-of-postural-orthostatic-tachycardia-syndrome-with-two-different-clinical-entities
#18
Funda Oztunc, Sezen Ugan Atik, Reyhan Dedeoglu, Firuze Erbek Alp, Selman Gokalp
Postural orthostatic tachycardia syndrome (POTS) is an abnormal heart rate response to a positional change. Several potential mechanisms for pathophysiology of POTS are defined. This syndrome can coexist with different clinical situations. In our report, the first case was a 13-year-old female who has been followed up for diagnosis of homocystinuria. She was admitted to our outpatient clinic with complaints of dizziness after suddenly moving from supine to upright position and chest pain after exercise. Tilt table test was performed to evaluate dizziness...
2016: Case Reports in Pediatrics
https://www.readbyqxmd.com/read/27412743/-predictive-value-of-upright-blood-pressure-change-for-long-term-prognosis-of-children-with-postural-tachycardia-syndrome-treated-with-midodrine-hydrochloride
#19
H X Li, W J Deng, C Y Zhang, H F Jin, J B Du
OBJECTIVE: To explore the predictive value of upright blood pressure change for long-term prognosis of children with postural tachycardia syndrome (POTS) treated with midodrine hydrochloride. METHOD: A total of 90 children (male 41, female 49) were enrolled in this study. Their mean age was (11.8±2.7) years. They were diagnosed as POTS in Peking University First Hospital from 2005 to 2011. According to the upright change of blood pressure at the first visit, they were divided into two groups, effective group (n=55) and ineffective group(n=35)...
July 2016: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/27405864/ivabradine-a-review-of-labeled-and-off-label-uses
#20
REVIEW
Carrie S Oliphant, Ryan E Owens, Oluwaseyi B Bolorunduro, Sunil K Jha
Ivabradine is a unique medication recently approved in the USA for the treatment of select heart failure patients. It was first approved for use in several countries around the world over a decade ago as an anti-anginal agent, with subsequent approval for use in heart failure patients. Since ivabradine has selective activity blocking the I f currents in the sinus node, it can reduce heart rate without appreciable effects on blood pressure. Given this heart-rate-specific effect, it has been investigated in many off-label indications as an alternative to traditional heart-rate-reducing medications such as beta blockers and calcium channel blockers...
October 2016: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
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