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[Postural changes in finger and toe pulse waves].

N Iida1, J Iriuchijima

  • 1Second Department of Physiology, Hiroshima University School of Medicine.

Kokyu to Junkan. Respiration & Circulation
|October 1, 1992
PubMed
Summary
This summary is machine-generated.

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Postural changes significantly alter pulse wave timing in healthy individuals, mainly due to increased aortic pulse wave velocity. Hypertensive patients exhibit shorter pulse wave delays and diminished dicrotic waves, suggesting arterial wall changes affect pulse wave characteristics.

Area of Science:

  • Cardiovascular Physiology
  • Biomedical Engineering

Context:

  • Simultaneous recording of finger and toe pulse waves provides insights into arterial hemodynamics.
  • Understanding pulse wave characteristics is crucial for assessing vascular health.

Purpose:

  • To investigate the impact of postural changes on pulse wave propagation.
  • To compare pulse wave characteristics between healthy individuals and hypertensive patients.

Summary:

  • In healthy subjects, transitioning from supine to sitting position halved the toe-to-finger pulse arrival time (t), attributed to increased aortic pulse wave velocity from hydrostatic pressure.
  • Healthy subjects displayed distinct dicrotic waves in both finger and toe pulses, with shorter intervals (T) for finger pulses, influenced by intra-aortic pressure variations.
  • Hypertensive patients showed consistently short pulse arrival times (t) even when supine, and reduced or absent dicrotic waves, particularly in toe pulses, linked to high blood pressure and arterial wall structural changes.

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Impact:

  • Findings highlight the dynamic nature of pulse wave velocity and its modulation by hydrostatic pressure.
  • The study elucidates distinct pulse wave patterns in hypertension, potentially aiding in non-invasive vascular assessment.
  • Results underscore the influence of arterial wall properties and blood pressure on pulse wave morphology and transmission.