hypocapnia

  1. SNT Gatchaman

    Preprint Long-COVID Postural Tachycardia Syndrome: A deep phenotyping study, 2025, Larsen et al.

    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...
    • SNT Gatchaman
    • Thread
    • amyloid doppler ultrasound hypocapnia nirs orthostatic intolerance pots sfn small fiber neuropathy synucleinopathy tilt table test
    • Replies: 17
    • Forum: Long Covid research
  2. Mij

    Reduced Stroke Volume and Brain Perfusion Drive Postural Hyperventilation in Postural Orthostatic Tachycardia Syndrome, 2024, Jacquie R. Baker et al

    Highlights POTS causes cardiovascular instability and severe symptoms. Postural hyperventilation is thought to cause POTS, but the mechanisms are unclear. Reduced stroke volume and brain perfusion drive postural hyperventilation in POTS. Stroke volume and brain perfusion should be targeted as...
    • Mij
    • Thread
    • blood volume cerebral blood flow hyperventilation hypocapnia pots
    • Replies: 0
    • Forum: Orthostatic intolerance
  3. V

    Anticipatory Central Command on Standing Decreases Cerebral Blood Flow Causing Hypocapnia in Hyperpneic Postural Tachycardia Syndrome, 2023, Stewart

    Abstract 50% of POTS patients are hypocapnic during orthostasis related to initial orthostatic hypotension (iOH). We determined whether iOH drives hypocapnia in POTS by low BP or decreased cerebral blood flow velocity (CBFv). We studied 3 groups; healthy volunteers (N=32, 18±3y) were compared...
  4. Hutan

    Physiological assessment of orthostatic intolerance in chronic fatigue syndrome, 2022, Natelson et al

    https://translational-medicine.biomedcentral.com/articles/10.1186/s12967-022-03289-8 Benjamin H. Natelson Jin-Mann S. Lin Michelle Blate Sarah Khan Yang Chen Elizabeth R. Unger Open access Background Orthostatic intolerance-OI is common in Myalgic Encephalomyelitis/Chronic Fatigue...
    • Hutan
    • Thread
    • 2022 ben natelson elizabeth unger hypocapnia me/cfs orthostatic intolerance paper pots shock index testing
    • Replies: 28
    • Forum: ME/CFS research
  5. Andy

    Levels of end-tidal carbon dioxide are low despite normal respiratory rate in individuals with Long COVID, 2021, Wood, Putrino et al

    To the Editor, Debilitating symptoms including fatigue, post-exertional malaise, brain fog, weakness, headache and dizziness can persist for over six months in individuals with Long COVID 1,2 (also referred to post-acute COVID-19 syndrome, post-COVID condition or post-acute sequelae of...
    • Andy
    • Thread
    • 2021 breathing hyperventilation hypocapnia long covid
    • Replies: 1
    • Forum: Long Covid research
  6. Kalliope

    USA: Mount Sinai PACS clinic and Dr David Putrino

    Moved post New video from Medinger. This time in conversation with dr. David Putrino, a British physiotherapist who is the director of rehabilitation innovation at Mt. Sinai in New York and now works with long haulers. 10 minutes in he says he was discussing the symptoms of his Long Covid...
    • Kalliope
    • Thread
    • amy proal clinic dysautonomia hypocapnia long covid mount sinai medical centre putrino treatment
    • Replies: 193
    • Forum: USA clinics and doctors
  7. Hoopoe

    Hypocapnic cerebral hypoperfusion: A biomarker of orthostatic intolerance (2018), Novak

    https://doi.org/10.1371/journal.pone.0204419 My take away from this: patients with hypocapnic cerebral hypoperfusion present the same symptoms as patients with POTS but can fail a tilt test due to absence of tachycardia. ME/CFS is also mentioned.
    • Hoopoe
    • Thread
    • 2018 cardiology cerebral hypoperfusion hypocapnia me/cfs novak orthostatic intolerance paper pots tilt table test
    • Replies: 1
    • Forum: ME/CFS research
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