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Cerebral Blood Flow in Orthostatic Intolerance [PDF]

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
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 ...
Muhammad Shahzeb Khan, Amanda J. Miller, Arooba Ejaz, Jeroen Molinger, Parag Goyal, David B. MacLeod, Ashley Swavely, Elyse Wilson, Meghan Pergola, Harikrishna Tandri, Camille Frazier Mills, Satish R Raj, Marat Fudim   +12 more
doaj   +5 more sources

Prevalence and associated factors of postoperative orthostatic intolerance at University of Gondar Comprehensive Specialized Hospital, Northwest Ethiopia, 2022: cross sectional study [PDF]

BMC Surgery, 2023
Background Postoperative orthostatic intolerance is an inability to maintain an upright position because of symptoms of cerebral hypoperfusion. It is a common problem in the early postoperative period and hinders early mobilization, however, there is ...
Negesse Zurbachew Gobezie, Nigussie Simeneh Endalew, Hailu Yimer Tawuye, Habtu Adane Aytolign   +3 more
doaj   +3 more sources

Orthostatic intolerance with tachycardia (postural tachycardia syndrome) and without (hypocapnic cerebral hypoperfusion) represent a spectrum of the same disorder [PDF]

Frontiers in Neurology
BackgroundSpectrum of chronic orthostatic intolerance without orthostatic hypotension includes postural tachycardia syndrome (POTS), with orthostatic tachycardia and hypocapnic cerebral hypoperfusion (HYCH), without orthostatic tachycardia.
Peter Novak, Peter Novak, David M. Systrom, David M. Systrom, Alexandra Witte, Sadie P. Marciano   +5 more
doaj   +3 more sources

Orthostatic intolerance as a potential contributor to prolonged fatigue and inconsistent performance in elite swimmers [PDF]

BMC Sports Science, Medicine and Rehabilitation, 2022
Background Athletic underperformance is characterized by fatigue and an inability to sustain a consistent exercise workload. We describe five elite swimmers with prolonged fatigue and athletic underperformance.
Lindsay S. Petracek, Ella F. Eastin, Ian R. Rowe, Peter C. Rowe   +3 more
doaj   +3 more sources

Cutaneous manifestations of orthostatic intolerance syndromes

International Journal of Women's Dermatology, 2021
Dysautonomia refers to a group of autonomic nervous system disorders that affect nearly 70 million people worldwide. One subset of dysautonomia includes syndromes of orthostatic intolerance (OI), which primarily affect adolescents and women of ...
Caroline T. Starling, BSA, Quoc-Bao D. Nguyen, MD, Ian J. Butler, MB.BS, Mohammed T. Numan, MD, Adelaide A. Hebert, MD   +4 more
doaj   +4 more sources

Orthostatic Intolerance after COVID-19 Infection: Is Disturbed Microcirculation of the Vasa Vasorum of Capacitance Vessels the Primary Defect? [PDF]

Medicina (Kaunas), 2022
Following COVID-19 infection, a substantial proportion of patients suffer from persistent symptoms known as Long COVID. Among the main symptoms are fatigue, cognitive dysfunction, muscle weakness and orthostatic intolerance (OI).
Wirth KJ, Löhn M.
europepmc   +4 more sources

Classical and Delayed Orthostatic Hypotension in Patients With Unexplained Syncope and Severe Orthostatic Intolerance [PDF]

Frontiers in Cardiovascular Medicine, 2020
Background: Orthostatic hypotension (OH) is a major sign of cardiovascular autonomic failure leading to orthostatic intolerance and syncope. Orthostatic hypotension is traditionally divided into classical OH (cOH) and delayed OH (dOH), but the ...
Parisa Torabi, Parisa Torabi, Fabrizio Ricci, Fabrizio Ricci, Viktor Hamrefors, Viktor Hamrefors, Richard Sutton, Richard Sutton, Artur Fedorowski, Artur Fedorowski   +9 more
doaj   +3 more sources

Cerebral Oximetry in Syncope and Syndromes of Orthostatic Intolerance [PDF]

Frontiers in Cardiovascular Medicine, 2019
Cerebral autoregulation is crucial for maintaining cerebral blood flow and perfusion. In recent years, the importance of cerebral oxygenation in syncope and orthostatic intolerance (OI) has received increased attention. Cerebral tissue oxygenation can be
Isabella Kharraziha, Isabella Kharraziha, Hannes Holm, Hannes Holm, Erasmus Bachus, Fabrizio Ricci, Fabrizio Ricci, Fabrizio Ricci, Richard Sutton, Richard Sutton, Artur Fedorowski, Artur Fedorowski, Viktor Hamrefors, Viktor Hamrefors   +13 more
doaj   +8 more sources

Circulating Autoantibodies Against Vasoactive Biomarkers Related to Orthostatic Intolerance in Long COVID Patients Compared to No-Long-COVID Populations: A Case-Control Study [PDF]

Biomolecules
Endothelial dysfunction mediated by elevated levels of autoantibodies against vasoactive peptides occurring after COVID-19 infection is proposed as a possible pathomechanism for orthostatic intolerance in long COVID patients.
Emilie Han, Katrin Müller-Zlabinger, Ena Hasimbegovic, Laura Poschenreithner, Nina Kastner, Babette Maleiner, Kevin Hamzaraj, Andreas Spannbauer, Martin Riesenhuber, Anja Vavrikova, Antonia Domanig, Christian Nitsche, Dominika Lukovic, Thomas A. Zelniker, Mariann Gyöngyösi   +14 more
doaj   +3 more sources

Orthostatic intolerance in chronic fatigue syndrome

Journal of Translational Medicine, 2019
Background Orthostatic intolerance (OI) is a significant problem for those with chronic fatigue syndrome (CFS). We aimed to characterize orthostatic intolerance in CFS and to study the effects of exercise on OI.
Richard Garner, James N. Baraniuk
doaj   +4 more sources