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Abnormal brain-heart electrophysiology in mild and severe orthostatic hypotension

Yingzhe Cheng1,2,3,4, Peilin Huang1,2,3,4, Lin Lin5

  • 1Department of Neurology, Center for Cognitive Neurology, Fujian Medical University Union Hospital.

Journal of Hypertension
|August 29, 2024
PubMed

Insights

This study found abnormal brainwave activity in patients with orthostatic hypotension, particularly in severe cases. These electrophysiological changes correlate with the condition's severity and associated psychiatric and cognitive issues.

Area of Science:

  • Neuroscience
  • Cardiology
  • Psychiatry

Background:

  • Orthostatic hypotension (OH) is characterized by a drop in blood pressure upon standing.
  • Mild orthostatic hypotension (MOH) and severe orthostatic hypotension (SOH) may involve distinct cardiocerebral electrophysiological changes.
  • The relationship between OH severity, psychiatric symptoms, and cognitive dysfunction requires further investigation.

Purpose of the Study:

  • To investigate cardiocerebral electrophysiology in patients with MOH and SOH.
  • To examine the association between OH severity and electrophysiological abnormalities.
  • To explore the link between OH, psychiatric symptoms, and cognitive dysfunction.

Main Methods:

  • Included 72 non-orthostatic hypotension (NOH), 17 MOH, and 11 SOH patients.
  • Recorded synchronized resting-state heart rate variability (HRV) and quantitative electroencephalogram (qEEG) parameters.
  • Analyzed time/frequency domain HRV, peak frequency, and brainwave power.

Main Results:

  • Abnormal neuronal activity observed in FP1 (MOH) and more widespread in FP1, FP2, O2 (SOH).
  • Significant associations found between cardiac/cerebral electrophysiological abnormalities and OH severity.
  • Electrophysiological changes correlated significantly with psychiatric symptoms and cognitive dysfunction.

Conclusions:

  • Abnormal EEG activity in OH patients is primarily in prefrontal and occipital lobes, especially in SOH.
  • Findings suggest a link between cerebral electrophysiology and OH severity.
  • Results may elucidate mechanisms of psychiatric and cognitive impairment in OH.
Abstract

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