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Related Experiment Videos

Sphygmomanometer-induced increases in forearm and hand volume.

R A Boland1, R D Adams

  • 1School of Physiotherapy, Faculty of Health Sciences, The University of Sydney, Lidcome, New South Wales, Australia.

Journal of Hand Therapy : Official Journal of the American Society of Hand Therapists
|January 6, 2000
PubMed
Summary

This study developed a safe method to temporarily increase forearm and hand volume using a sphygmomanometer. This technique can help provoke symptoms for diagnosing upper limb conditions.

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Area of Science:

  • Physiology
  • Medical Devices

Background:

  • Venous congestion can cause swelling, contributing to certain upper limb conditions.
  • A reliable method is needed to induce temporary swelling for diagnostic purposes.

Purpose of the Study:

  • To develop a safe and simple method for inducing temporary forearm and hand volume increase.
  • To evaluate this method as a potential symptom provocation test for upper limb conditions.

Main Methods:

  • Employed principles of venous occlusion plethysmography.
  • Measured blood volume changes in the forearm and hand of asymptomatic subjects.
  • Utilized three different sphygmomanometer cuff pressures for four minutes.

Main Results:

  • Achieved volume increases ranging from 37 to 62 ml (2.5% to 4.1%).

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  • Effective pressures were identified between diastolic pressure minus 30 mm Hg and diastolic pressure plus 5 mm Hg.
  • Reported minimal side effects associated with the procedure.

    • Conclusions:

    • A sphygmomanometer can safely induce temporary fluid congestion in the forearm and hand.
    • This method shows potential as a symptom provocation test for upper limb conditions.