Medical Dictionary

mm Hg

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noun \ ˈmil-ə-ˌmēt-ər-əv-ˈmər-kyə-rē, -k(ə-)rē \

medical Definition of mm Hg

:a unit of pressure equal to the pressure exerted by a column of mercury 1 millimeter high at 0°C and under the acceleration of gravity and nearly equivalent to 1 torr (about 133.3 pascals)
  • The pulse was 110 beats per minute and the blood pressure was 105/60 mm Hg
  • —Michael Drancourt et al.The New England Journal of Medicine16 Feb. 1995
  • 34% of treated eyes had only a transient rise in intraocular pressure of 5 mm Hg or more …
  • —David FrankelThe Lancet27 Dec. 1995

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