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Related Experiment Videos

Arterial dominance in the hand

B Husum, T Palm

    British Journal of Anaesthesia
    |September 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    This study assessed arterial pressure in the thumb using strain-gauge plethysmography. Results indicate variability in radial and ulnar artery contributions to thumb perfusion, impacting pressure measurements.

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    Area of Science:

    • Vascular Physiology
    • Cardiovascular Research

    Background:

    • The Allen test is commonly used to assess collateral circulation to the hand.
    • Understanding the contribution of radial and ulnar arteries to thumb perfusion is crucial for vascular assessments.

    Purpose of the Study:

    • To evaluate arterial pressure in the thumb and contralateral arm using strain-gauge plethysmography.
    • To investigate the effects of radial and ulnar artery compression on thumb arterial pressure in healthy individuals.

    Main Methods:

    • Simultaneous arterial pressure measurement in the thumb and contralateral arm.
    • Strain-gauge plethysmography utilized for pressure assessment.
    • Compression of radial or ulnar artery to assess collateral circulation.

    Main Results:

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    • In 14.5% of hands, radial or ulnar artery compression did not reduce thumb pressure.
    • Radial artery occlusion decreased thumb pressure by >10 mm Hg in 76% of cases.
    • Ulnar artery occlusion reduced thumb pressure in 45.5% of cases, occasionally below 40 mm Hg.
    • Radial dominance in thumb perfusion was observed in 55.0% of hands, ulnar dominance in 12.0%, and codominance in 33.0%.

    Conclusions:

    • Strain-gauge plethysmography effectively measures thumb arterial pressure.
    • Significant variability exists in collateral circulation to the hand, with radial artery dominance being most common.
    • Findings highlight the importance of assessing individual variations in arterial supply for accurate vascular evaluation.