Neurohumoral and haemodynamic profile in postural tachycardia and chronic fatigue syndromes
Open accessAbstract
Several studies recognized an overlap between CFS (chronic fatigue syndrome) and POTS (postural tachycardia syndrome). We compared the autonomic and neurohormonal phenotype of POTS patients with CFS (CFS–POTS) to those without CFS (non-CFS–POTS), to determine whether CFS–POTS represents a unique clinical entity with a distinct pathophysiology. We recruited 58 patients with POTS, of which 47 were eligible to participate. A total of 93% of them reported severe fatigue [CIS (Checklist of Individual Strength), fatigue subscale >36], and 64% (n=30) fulfilled criteria for CFS (CFS–POTS). The prevalence of CFS symptoms (Centers for Disease Control and Prevention criteria) was greater in the CFS–POTS group, but the pattern of symptoms was similar in both groups. Physical functioning was low in both groups (RAND-36 Health Survey, 40±4 compared with 33±3; P=0.153), despite more severe fatigue in CFS–POTS patients (CIS fatigue subscale 51±1 compared with 43±3; P=0.016). CFS–POTS patients had greater orthostatic tachycardia than the non-CFS–POTS group (51±3 compared with 40±4 beats/min; P=0.030), greater low-frequency variability of BP (blood pressure; 6.3±0.7 compared with 4.8±1.0 mmHg2; P=0.019), greater BP recovery from early to late phase II of the Valsalva manoeuvre (18±3 compared with 11±2 mmHg; P=0.041) and a higher supine (1.5±0.2 compared with 1.0±0.3 ng/ml per·h; P=0.033) and upright (5.4±0.6 compared with 3.5±0.8 ng/ml per h; P=0.032) PRA (plasma renin activity). In conclusion, fatigue and CFS-defining symptoms are common in POTS patients. The majority of them met criteria for CFS. CFS–POTS patients have higher markers of sympathetic activation, but are part of the spectrum of POTS. Targeting this sympathetic activation should be considered in the treatment of these patients.
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Patients with POTS often have exercise intolerance, more than 90% have chronic fatigue, and at least half meet criteria for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).
“Patients with POTS often have exercise intolerance, more than 90% have chronic fatigue and at least half meet criteria for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).18”
From Diagnosis and management of postural orthostatic tachycardia syndrome (2022) · cites this paper as [18]
The Results report severe fatigue in 93% of the POTS patients, and the Discussion reports that 64% met CDC criteria for CFS. But severe fatigue is not the same as chronic fatigue: the Introduction gives a 48–77% chronic-fatigue prevalence in earlier POTS cohorts, and the Results say some patients’ fatigue lasted less than six months. The paper describes impaired physical functioning and exercise-related fatigue, but does not establish how often patients have exercise intolerance. Page numbers were not available in our copy. (LLM, conf=0.88)
Experimental — accuracy not yet measuredPOTS and CFS may exist along the same clinical spectrum.
“as such, they may exist along the same clinical spectrum (82).”
From Postural Orthostatic Tachycardia Syndrome (2019) · cites this paper as [82]
Patients with POTS may simultaneously meet diagnostic criteria for migraine, hypermobile Ehlers-Danlos syndrome, mast cell activation syndrome, or chronic fatigue syndrome.
“Patients with POTS may simultaneously meet the diagnostic criteria for migraine, hypermobile Ehlers-Danlos syndrome (hEDS), mast cell activation syndrome (MCAS) or chronic fatigue syndrome (CFS) (Kavi et al., 2016; McDonald et al., 2014; Okamoto et al., 2012; Shaw et al., 2019).”
From Postural orthostatic tachycardia syndrome (POTS): State of the science and clinical care from a 2019 National Institutes of Health Expert Consensus Meeting - Part 1 (2021) · cites this paper as Okamoto et al., 2012
POTS patients have a high prevalence of chronic fatigue (48-77%) and of CFS (17-23%).
“Patients with POTS have a high prevalence of chronic fatigue (48-77%) and of CFS (17-23%) [33;8].”
From Postural tachycardia syndrome: beyond orthostatic intolerance (2015) · cites this paper as [33]
Autonomic testing indicated a similar autonomic profile but higher sympathetic tone in POTS patients with CFS.
“Autonomic testing indicated a similar autonomic profile but higher sympathetic tone in patients with CFS.”
From Postural tachycardia syndrome: beyond orthostatic intolerance (2015) · cites this paper as [33]
Plasma renin activity and aldosterone tended to be higher in POTS patients with CFS.
“Plasma renin activity and aldosterone tended to be higher in patients with CFS.”
From Postural tachycardia syndrome: beyond orthostatic intolerance (2015) · cites this paper as [33]
Among POTS patients grouped by CFS criteria, fatigue symptoms, orthostatic HR and BP changes after 10 minutes, supine and upright plasma norepinephrine, and plasma volume were similar between those with and without CFS.
“When patients were grouped according to whether or not they met the criteria for CFS [33], fatigue symptoms, orthostatic changes in HR and BP after 10 minutes, supine and upright plasma norepinephrine, and plasma volume were similar for the two groups.”
From Postural tachycardia syndrome: beyond orthostatic intolerance (2015) · cites this paper as [33]
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- Authors
- Okamoto, L. E., Raj, S. R., Peltier, A., Gamboa, A., Shibao, C., Diedrich, A., Black, B. K., Robertson, D., & Biaggioni, I.
- Affiliations
- Vanderbilt University (US)
- Corresponding author
- Biaggioni, Italo
- ORCID
- Venue
- Clinical Science
- Publisher
- Portland Press Ltd.
- Published
- 2011-10-24
- Volume
- 122
- Issue
- 4
- Pages
- 183-192
- ISSN
- 0143-5221 (ISSN-L)
- 1470-8736
- PMC
- PMC3203411
- OpenAlex
- W2013070592
- Cited by
- 89
- References
- 41
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 8 · 2023: 10 · 2022: 7 · 2021: 7 · 2020: 7 · 2019: 7 · 2018: 10 · 2017: 5 · 2016: 5 · 2015: 4 · 2014: 6 · 2013: 4 · 2012: 5
- FWCI
- 4.91
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Clinical Science (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Funders
- Vanderbilt University
- Centers for Disease Control and Prevention
- National Heart, Lung, and Blood Institute (K23HL103976, P01HL056693, R01HL102387, P01 HL-56693)
- National Institute of Neurological Disorders and Stroke (R01NS055670)
- National Center for Research Resources (KL2RR024977, TL1RR024978, UL1RR024975)
- NIH Clinical Center
- Topics
- Health Sciences › Medicine › Surgery › Cardiovascular Syncope and Autonomic Disorders
- Health Sciences › Medicine › Psychiatry and Mental health › Fibromyalgia and Chronic Fatigue Syndrome Research
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Rate Variability and Autonomic Control
- Keywords
- postural orthostatic tachycardia syndrome, chronic fatigue syndrome, autonomic dysfunction, sympathetic activation, plasma renin activity, hemodynamics, orthostatic tachycardia, blood pressure variability, Valsalva maneuver, fatigue, physical function, pathophysiology, treatment goals
- MeSH terms
- Adult, Autonomic Nervous System, Blood Volume, Female, Humans, Norepinephrine, Sweating, Fatigue Syndrome, Chronic, Postural Orthostatic Tachycardia Syndrome
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