Brain fog in postural tachycardia syndrome: An objective cerebral blood flow and neurocognitive analysis
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(Published version)
Date
2020
Authors
Wells, R.
Paterson, F.
Bacchi, S.
Page, A.
Baumert, M.
Lau, D.H.
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Journal article
Citation
Journal of Arrhythmia, 2020; 36(3):549-552
Statement of Responsibility
Rachel Wells, Felix Paterson, Stephen Bacchi, Amanda Page, Mathias Baumert, Dennis H. Lau
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Abstract
Background: It remains unclear whether brain fog is related to impaired cerebral blood flow (CBF) in postural tachycardia syndrome (POTS) patients. Methods: We assessed CBF in the posterior cerebral artery (PCA) using transcranial Doppler with visual stimuli in 11 POTS and 8 healthy subjects in the seated position, followed by neurocognitive testing. Results: CBF parameters were similar between the two groups. POTS patients demonstrated significantly longer latency in delayed match to sample response time and greater errors in attention switching task. Conclusions: Impaired short-term memory and alertness may underlie the symptom of brain fog in POTS patients, despite normal CBF.
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First published: 03 March 2020
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© 2020 The Authors. Journal of Arrhythmia published by John Wiley & Sons Australia, Ltd on behalf of the Japanese Heart Rhythm Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.