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Millimeters of mercury (mm Hg)

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By Jeannette Curtis; Caroline Rea, RN, BS, MS

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

Author:Jeannette Curtis
Caroline Rea, RN, BS, MS
Medical Review:
Last Updated: 05/25/2007