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Related Experiment Videos

Differences between right and left arm blood pressures in the elderly.

F Hashimoto, W C Hunt, L Hardy

    The Western Journal of Medicine
    |August 1, 1984
    PubMed
    Summary

    Blood pressure measurements in elderly individuals show minimal differences between arms. Most people have small blood pressure variations between the right and left arm, supporting consistent measurement practices.

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    Area of Science:

    • Gerontology
    • Cardiovascular Health
    • Biostatistics

    Background:

    • Clinical guidelines for blood pressure measurement lack consensus on arm selection.
    • Existing literature lacks data on the frequency distribution of inter-arm blood pressure differences.

    Purpose of the Study:

    • To determine the frequency distribution of blood pressure differences between the right and left arms in elderly individuals.
    • To provide data that can inform standardized blood pressure measurement protocols.

    Main Methods:

    • 174 elderly participants underwent 12 blood pressure measurements in both arms.
    • Data analyzed using a least-squares components of variance method.

    Main Results:

    • The mean systolic blood pressure difference (right minus left) was 0.93 mmHg.

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  • The mean diastolic blood pressure difference (right minus left) was 0.70 mmHg.
  • 1.4% of participants exhibited systolic differences >10 mmHg; 6.5% exhibited differences >7.5 mmHg.

    • Conclusions:

    • The pressure difference between arms is typically small in the elderly population.
    • These findings suggest that either arm can be used for blood pressure measurement without significant bias for most individuals.