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    Millimeters of Mercury (mm Hg)

    Millimeters of Mercury (mm Hg)

    Pressure is measured in millimeters (mm) of mercury (Hg). A special unit that measures pressure shows how high a column of mercury rises.

    Last Revised: May 10, 2013

    Author: Healthwise Staff

    Medical Review: Anne C. Poinier, MD - Internal Medicine & Thomas M. Bailey, MD - Family Medicine

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