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Changes in the bilateral pulse transit time difference with a moving arm.

Xinge Jiang1,2, Shoushui Wei1, Dingchang Zheng3

  • 1School of Control Science and Engineering, Shandong University, Jinan 250061, Shandong, China.

Technology and Health Care : Official Journal of the European Society for Engineering and Medicine
|May 2, 2018
PubMed
Summary
This summary is machine-generated.

Pulse transit time (PTT) changes due to arm position were consistent between the left and right arms in healthy individuals. This study validates PTT measurements across different arm positions for both sides.

Keywords:
Peripheral arterial volume compliancearm PTTartery pulsepulse transit time (PTT)

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Area of Science:

  • Physiology
  • Biomedical Engineering
  • Cardiovascular Research

Background:

  • Pulse transit time (PTT) changes are known to be influenced by arm position.
  • Previous studies focused on unilateral arm PTT changes.
  • Consistency of PTT changes between bilateral arms has not been validated.

Purpose of the Study:

  • To quantify PTT changes between horizontal and non-horizontal positions for both right and left arms.
  • To explore the consistency of PTT changes between the two arms.
  • To validate PTT measurement reliability across different arm positions.

Main Methods:

  • Twenty-four healthy subjects (21-50 years old) participated.
  • Radial artery pulses were synchronously recorded from both arms.
  • One arm was positioned at five angles (90° to -90°), while the other remained horizontal (0°) as reference.

Main Results:

  • Mean PTT changes in the left arm ranged from 16.1 ms (90°) to -2.6 ms (-90°).
  • Mean PTT changes in the right arm ranged from 18.0 ms (90°) to -2.0 ms (-90°).
  • No statistically significant differences in PTT changes were observed between the left and right arms across all positions (P > 0.05).

Conclusions:

  • PTT changes induced by varying arm positions are consistent between the left and right arms.
  • The findings support the reliability of using PTT measurements regardless of which arm is used.
  • This study validates bilateral PTT measurement consistency for potential clinical applications.