What is mmHg?

Question

Please explain me clearly..

10 points & Thanks in Advance

Answer 1

It is an abbreviation for millimetres of  Hg (mercury)

It is a unit of pressure.

It is defined as the pressure exerted at the base of a column of fluid exactly 1 mm high when the density of the fluid is exactly 13.5951 gr/cm3 at a place where the acceleration of gravity is exactly 9.80665 m/s2.

Answer 2

milimeters of Mercury(Hg), which is a unit of pressure. it's the pressure exerted at the base of a 1mm high column of mercury, and is also the standard European measure of atmospheric pressure (inches in the US).

Answer 3

it is the distance up a tube that mercury is moved when pressure is applied, say via a blood pressure cuff. Some places still have these devices attached to a wall, full of mercury. So when you pump up the blood pressure cuff, the mercury climbs up a glass column that is calibrated along the side with numbers. It is a way to measure pressure in a standardized manner when taking a blood pressure, so that when you have it measured in Dr. Jones' clinic the same technique and measures can be applied in Dr. Smith's clinic, for comparison purposes. Mercury is used because it is heavier than water (otherwise you might have something that is 100 mm Hg equal to 200 mm H2O, plus it does not evaporate. Now adays, analog dials substitute for the glass columns filled with mercury, but they are calibrated against mercury in a glass tube during their manufacture. Mercury is a bit of a problem when it gets out into the clinic -- a serious environmental contaminant. I hope this helps you.

Answer 4

because this is in the Medicine category:

It is the unit of measure for blood pressure.

Answer 5

The blood pressure is measured in terms of millimetres of mercury (mmHg).