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Related Experiment Video

Updated: Aug 29, 2025

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
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Utricular dysfunction in patients with orthostatic hypotension.

Jae-Gyum Kim1, Jeong-Heon Lee1, Sun-Uk Lee2

  • 1Department of Neurology, Korea University Medical Center, 73 Goryeodae-ro, Seongbuk-gu, Seoul, 02841, South Korea.

Clinical Autonomic Research : Official Journal of the Clinical Autonomic Research Society
|September 8, 2022
PubMed
Summary

This study found that otolithic dysfunction, specifically abnormal ocular vestibular-evoked myogenic potentials (oVEMP), is associated with orthostatic hypotension (OH). These findings suggest a link between inner ear balance issues and the inability to maintain blood pressure upon standing.

Keywords:
Autonomic nervous systemOrthostatic hypotensionOtolith

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Area of Science:

  • Neurology
  • Otolaryngology
  • Cardiology

Background:

  • Orthostatic hypotension (OH) is a condition characterized by a significant drop in blood pressure upon standing, often leading to dizziness and falls.
  • Otolith organs, part of the inner ear's vestibular system, are crucial for sensing gravity and linear acceleration.
  • The relationship between otolithic dysfunction and OH has not been extensively studied.

Purpose of the Study:

  • To investigate the association between otolithic dysfunction and the presence of orthostatic hypotension (OH).
  • To explore potential correlations between vestibular-evoked myogenic potentials (VEMPs) and hemodynamic changes during orthostatic stress.

Main Methods:

  • Retrospective review of 155 patients with orthostatic dizziness who underwent vestibular-evoked myogenic potentials (oVEMP and cVEMP) and head-up tilt table testing.
  • Comparison of VEMP results between patients with OH (n=38) and those without OH (n=117).
  • Multivariable logistic regression and correlation analyses to identify factors associated with OH and relate VEMP parameters to blood pressure changes.

Main Results:

  • OH was associated with high baseline systolic blood pressure, heart failure, and unilateral oVEMP abnormalities.
  • oVEMP n1 latency negatively correlated with maximal systolic blood pressure changes at 15s, 3min, and 10min post-tilt.
  • oVEMP n1-p1 amplitude positively correlated with systolic blood pressure changes at 15s, and cVEMP p13 latency negatively correlated with systolic blood pressure changes at 10min.

Conclusions:

  • The study provides evidence linking otolithic dysfunction to orthostatic hypotension.
  • Abnormalities in oVEMP may serve as a biomarker for OH.
  • Further research is warranted to elucidate the mechanisms underlying this association.