orthostatic intolerance

Dynamic cerebral autoregulation in people with mild cognitive impairment Laura K Fitzgibbon-Collins; Michael Borrie; Sue Peters; J Kevin Shoemaker; Jaspreet Bhangu Altered cerebrovascular hemodynamics and low cerebral perfusion contribute to the development and progression of dementia. Dynamic...

Long-COVID Postural Tachycardia Syndrome: A deep phenotyping study Nicholas W Larsen; Jannika V Machnik; Jordan Seliger; Ruba Shaik; Christopher H Gibbons; Paul J Utz; Maarten G Lansberg; Srikanth Muppidi; Safwan Jaradeh; Mitchell G Miglis BACKGROUND Postural tachycardia syndrome (POTS) has...

Circulating Autoantibodies Against Vasoactive Biomarkers Related to Orthostatic Intolerance in Long COVID Patients Compared to No-Long-COVID Populations: A Case-Control Study Emilie Han, Katrin Müller-Zlabinger, Ena Hasimbegovic, Laura Poschenreithner, Nina Kastner, Babette Maleiner, Kevin...

Abstract Cerebral blood flow (CBF) is vital for delivering oxygen and nutrients to the brain. Many forms of orthostatic intolerance (OI) involve impaired regulation of CBF in the upright posture, which results in disabling symptoms that decrease quality of life. Because CBF is not easy to...

Dietary sodium and health: How much is too much for those with orthostatic disorders? Stock; Chelimsky; Edwards; Farquhar High dietary salt (NaCl) increases blood pressure (BP) and can adversely impact multiple target organs including the vasculature, heart, kidneys, brain, autonomic nervous...

Peter Novak and David Systrom, etc. Peter Rowe is a reviewer… one quote from the paper: Our study provides additional evidence of importance of cerebral blood flow and respiratory system in orthostatic intolerance syndromes without orthostatic hypotension...

We've had a very population thread about needing to lie flat, started by @Jonathan Edwards, and @Mij has just started a very interesting thread about some new research showing the uselessness of salt for OI. From reading about OI on the forum, I'm wondering if anything is actually solidly known...

Overlapping Conditions in Long COVID at a Multisite Academic Center Background: Many patients experience persistent symptoms after COVID-19, a syndrome referred to as Long COVID (LC). The goal of this study was to identify novel new or worsening comorbidities self-reported in patients with LC...

Throat problems linked to decreased baroreflex sensitivity (msn.com)

https://www.emerge.org.au/get-involved-in-research/ Have you been diagnosed with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) or orthostatic intolerance? Researchers at the Baker Heart and Diabetes Institute (Melbourne, Victoria) request your contribution to research that hopes...

Orthostatic Intolerance in Children With Long COVID Utilizing a 10-Minute Passive Standing Test Amanda K. Morrow; Cindy Villatoro; Christina Kokorelis; Peter C. Rowe; Laura A. Malone Despite there being a wide variety of symptoms reported in pediatric long COVID, one condition that has become...

Clinical and endocrine features of orthostatic intolerance detected in patients with long COVID Kato, Atsushi; Tokumasu, Kazuki; Yamamoto, Koichiro; Otsuka, Yuki; Nakano, Yasuhiro; Honda, Hiroyuki; Sunada, Naruhiko; Sakurada, Yasue; Matsuda, Yui; Hasegawa, Toru; Takase, Ryosuke; Ueda, Keigo...

Abnormalities of angiotensin regulation in postural tachycardia syndrome Hossam I. Mustafa; Emily M. Garland; Italo Biaggioni; Bonnie K. Black; William D. Dupont; David Robertson; Satish R. Raj BACKGROUND Postural tachycardia syndrome (POTS) is a disorder characterized by excessive orthostatic...

https://link.springer.com/article/10.1007/s10072-024-07673-8 Coelho, F.M.S., de Carvalho Cremaschi, R.M. & Novak, P. Cerebral blood flow and end-tidal CO2 predict lightheadedness during head-up tilt in patients with orthostatic intolerance. Neurol Sci (2024)...

https://www.autonomicneuroscience.com/article/S1566-0702(18)30298-4/abstract not open access Short Communication - Autonomic Neuroscience The autonomic reflex screen (ARS) has been established as an important clinical tool in the evaluation and diagnosis of autonomic disorders ( Low, 2003 )...

written by: Mitchell G. Miglis, Noor Syed, Melissa M. Cortez, Frans C. Viser, C. Linda MC van Campen, Peter Novak Unfortunately one can only see the references here: https://link.springer.com/article/10.1007/s10286-024-01036-1 One can see the start of the letter here...

I'd love to see a discussion about the different kinds of abnormalities of heart rate and blood pressure during tilt testing that Frans Visser talked about on the NIH ME/CFS Research Roadmap: Circulation Webinar (January 11, 2024): - POTS - Orthostatic hypotension - Syncope - No POTS, normal...

Autoimmunity in Syndromes of Orthostatic Intolerance: An Updated Review Pena, Clarissa; Moustafa, Abdelmoniem; Mohamed, Abdel-Rhman; Grubb, Blair Orthostatic intolerance is a broad term that represents a spectrum of dysautonomic disorders, including postural orthostatic tachycardia syndrome...

Impact of COVID-19 infection on baseline autonomic symptoms in patients with preexisting postural tachycardia syndrome and orthostatic intolerance: A retrospective study Abstract Background Postural orthostatic tachycardia syndrome (POTS) and dysautonomia following a SARS-CoV-2 infection have...

Preprint now published. See post #6 https://www.medrxiv.org/content/10.1101/2023.12.18.23299958v1 Prevalence of orthostatic intolerance in Long Covid clinic patients – A multicentre observational study Cassie Lee1(0009-0004-9449-0932) Darren C Greenwood2, Harsha Master3, Kumaran...