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Postural orthostatic

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https://www.readbyqxmd.com/read/27903817/effects-of-orthostatic-hypotension-on-cognition-in-parkinson-disease
#1
Justin Centi, Roy Freeman, Christopher H Gibbons, Sandy Neargarder, Alexander O Canova, Alice Cronin-Golomb
OBJECTIVE: To investigate the relation between orthostatic hypotension (OH) and posture-mediated cognitive impairment in Parkinson disease (PD) using a cross-sectional and within-group design. METHODS: Individuals without dementia with idiopathic PD included 18 with OH (PDOH) and 19 without OH; 18 control participants were also included. Neuropsychological tests were conducted in supine and upright-tilted positions. Blood pressure was assessed in each posture. RESULTS: The PD groups performed similarly while supine, demonstrating executive dysfunction in sustained attention and response inhibition, and reduced semantic fluency and verbal memory (encoding and retention)...
November 30, 2016: Neurology
https://www.readbyqxmd.com/read/27894154/perfusion-controlled-mobilization-after-lower-extremity-free-flaps-pushing-the-limits-of-time-and-intensity
#2
Ulf Dornseifer, Charlotte Kleeberger, Lukas Kargl, Markus Schönberger, Daniel Rohde, Milomir Ninkovic, Arndt Schilling
Background The current standard to gradually adapt the fragile perfusion in lower extremity free flaps to an upright posture is the dangling maneuver. This type of flap training neither fits the orthostatic target load of an upright posture, nor does it assist in mobilizing the patients effectively. In this study, we quantitatively analyzed training effects of an early and full mobilization on flap perfusion. Methods A total of 15 patients with gracilis flaps for distal lower extremity reconstruction were included...
November 28, 2016: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/27884959/cardiac-responses-to-exercise-distinguish-postural-orthostatic-tachycardia-syndrome-variants
#3
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/27878227/cardiovascular-coupling-during-graded-postural-challenge-comparison-between-linear-tools-and-joint-symbolic-analysis
#4
Alberto Porta, Anielle C M Takahashi, Aparecida M Catai
Background: A joint symbolic analysis (JSA) is applied to assess the strength of the cardiovascular coupling from spontaneous beat-to-beat variability of the heart period (HP) and the systolic arterial pressure (SAP) during an experimental protocol inducing a gradual baroreflex unloading evoked by postural change (i.e. graded head-up tilt). Method: The adopted JSA can quantify the degree of association between the HP and SAP variabilities as a function of the time scale of the HP and SAP patterns...
June 30, 2016: Brazilian Journal of Physical Therapy
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
#5
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/27806982/coupling-between-arterial-and-venous-cerebral-blood-flow-during-postural-change
#6
Shigehiko Ogoh, Takuro Washio, Hiroyuki Sasaki, Lonnie Grove Petersen, Niels H Secher, Kohei Sato
In supine humans the main drainage from the brain is through the internal jugular vein (IJV) but the vertebral veins (VV) become important during orthostatic stress because the IJV is partially collapsed. To identify the effect of this shift in venous drainage from the brain on the cerebral circulation, this study addressed both arterial and venous flow responses in the "anterior" and "posterior" parts of the brain when 9 healthy subjects (5 men) were seated and flow was manipulated by hyperventilation and inhalation of 6% carbon dioxide (CO2)...
November 2, 2016: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/27756060/standing-up-slowly-antagonises-initial-blood-pressure-decrease-in-older-adults-with-orthostatic-hypotension
#7
Eline S de Bruïne, Esmee M Reijnierse, Marijke C Trappenburg, Jantsje H Pasma, Oscar J de Vries, Carel G M Meskers, Andrea B Maier
BACKGROUND: Orthostatic hypotension (OH) is common in older adults and associated with increased morbidity and mortality, loss of independence and high health-care costs. Standing up slowly is a recommended non-pharmacological intervention. However, the effectiveness of this advice has not been well studied. OBJECTIVES: The aim of this study was to investigate whether standing up slowly antagonises posture-related blood pressure (BP) decrease in a clinically relevant population of geriatric outpatients...
October 19, 2016: Gerontology
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
#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/27734621/clinical-approach-to-autonomic-dysfunction
#9
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
#10
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
#11
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/27727284/orthostatic-hypotension-and-the-long-term-risk-of-dementia-a-population-based-study
#12
Frank J Wolters, Francesco U S Mattace-Raso, Peter J Koudstaal, Albert Hofman, M Arfan Ikram
BACKGROUND: Orthostatic hypotension (OH) is a common cause of transient cerebral hypoperfusion in the population. Cerebral hypoperfusion is widely implicated in cognitive impairment, but whether OH contributes to cognitive decline and dementia is uncertain. We aimed to determine the association between OH and the risk of developing dementia in the general population. METHODS AND FINDINGS: Between 4 October 1989 and 17 June 1993, we assessed OH in non-demented, stroke-free participants of the population-based Rotterdam Study...
October 2016: PLoS Medicine
https://www.readbyqxmd.com/read/27696568/postural-orthostatic-tachycardia-is-not-a-useful-diagnostic-marker-for-chronic-fatigue-syndrome
#13
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
#14
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/27641792/orthostatic-hypotension-in-parkinson-s-disease-does-it-matter-if-asymptomatic
#15
Aristide Merola, Alberto Romagnolo, Michela Rosso, José Ricardo Lopez-Castellanos, Benjamin D Wissel, Sydney Larkin, Andrea Bernardini, Maurizio Zibetti, Simona Maule, Leonardo Lopiano, Alberto J Espay
INTRODUCTION: Orthostatic hypotension (OH) may frequently be asymptomatic in patients with Parkinson's disease (PD). However, the relationship between symptomatic/asymptomatic status and functional disability remains unclear. METHODS: Using orthostatic blood pressure (BP) measurements and the Orthostatic Hypotension Symptom Assessment (OHSA) questionnaire, 121 consecutive PD patients without history of chronic hypertension and not taking alpha-adrenergic antagonists for bladder disorders were classified according to (1) OH symptomatic status, based on presence/absence of orthostatic symptoms (symptomatic OH: OHSA item 1 ≥ 1), and (2) OH severity, based on the magnitude of BP fall on the lying-to-standing test: OH- (<20/10 mmHg); moderate OH+ (≥20/10 mmHg but < 30/15 mmHg); and severe OH+ (≥30/15 mmHg)...
September 10, 2016: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/27638996/patterns-of-pediatric-venous-disease
#16
Elizabeth A Andraska, Danielle C Horne, Danielle N Campbell, Jonathan L Eliason, Thomas W Wakefield, Dawn M Coleman
BACKGROUND: The spectrum of chronic venous disease (CVD) is well documented in adults; clinical guidelines standardize diagnosis and treatment. There is a paucity of data published commenting on pediatric CVD exclusive of Klippel-Trénaunay syndrome (KTS) and post-thrombotic syndrome. METHODS: This study aimed to define patterns of pediatric venous disease. All venous reflux studies performed on patients <18 years of age between January 2012 and June 2014 were reviewed...
October 2016: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/27638848/orthostatic-hypotension-in-middle-age-and-risk-of-falls
#17
Stephen P Juraschek, Natalie Daya, Lawrence J Appel, Edgar R Miller, Beverly Gwen Windham, Lisa Pompeii, Michael E Griswold, Anna Kucharska-Newton, Elizabeth Selvin
BACKGROUND: One-third of older adults fall each year. Orthostatic hypotension (OH) has been hypothesized as an important risk factor for falls, but findings from prior studies have been inconsistent. METHODS: We conducted a prospective study of the association between baseline OH (1987-1989) and risk of falls in the Atherosclerosis Risk in Communities (ARIC) Study. Falls were ascertained during follow-up via ICD-9 hospital discharge codes or Centers for Medicare & Medicaid Services claims data...
September 16, 2016: American 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
#18
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/27636856/safety-and-durability-of-effect-with-long-term-open-label-droxidopa-treatment-in-patients-with-symptomatic-neurogenic-orthostatic-hypotension-noh303
#19
Stuart Isaacson, Holly A Shill, Steven Vernino, Adam Ziemann, Gerald J Rowse
BACKGROUND: Neurogenic orthostatic hypotension (nOH) is associated with insufficient norepinephrine release in response to postural change. OBJECTIVE: The objective of this study was to evaluate the long-term safety and durability of efficacy of the norepinephrine precursor droxidopa in patients with symptomatic nOH. METHODS: This multinational study consisted of 3 sequential phases: a 3-month open-label droxidopa treatment phase followed by a 2-week double-blind, placebo-controlled withdrawal phase, and a 9-month open-label extension phase in which all patients received droxidopa...
October 19, 2016: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/27634181/long-term-exposure-to-microgravity-impairs-vestibulo-cardiovascular-reflex
#20
Hironobu Morita, Chikara Abe, Kunihiko Tanaka
The vestibular system is known to have an important role in controlling blood pressure upon posture transition (vestibulo-cardiovascular reflex, VCR). However, under a different gravitational environment, the sensitivity of the vestibular system may be altered. Thus, the VCR may become less sensitive after spaceflight because of orthostatic intolerance potentially induced by long-term exposure to microgravity. To test this hypothesis in humans, we investigated the ability of the VCR to maintain blood pressure upon head-up tilt before and after a 4-6 months stay on the International Space Station...
2016: Scientific Reports
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