Need help on Blood pressure conversion

Don't know how to calculate the area of your garden or circumference of a pond? Ask your question here.

Moderator: convert-me.com

Need help on Blood pressure conversion

Postby Galatea » Mon Mar 22, 2004 1:36 am

Hello! I'm trying to convert American style blood psi (92/60) to European standards, and vice versa : what does 16/9 mean ? I think its cm/Hg but I don't know what Hg is exactly, despite looking in several reference books. Thanks for your help!
Galatea
 
Posts: 1
Joined: Mon Mar 22, 2004 1:31 am

Re: Need help on Blood pressure conversion

Postby Knight » Tue Mar 23, 2004 12:34 am

Galatea wrote:Hello! I'm trying to convert American style blood psi (92/60) to European standards, and vice versa : what does 16/9 mean ? I think its cm/Hg but I don't know what Hg is exactly, despite looking in several reference books. Thanks for your help!

To answer your questions in order:

1) 92/60 mm Hg would be 12.26/8 kPa.
2) 16/9 kPa would be 120/67.5 mm Hg.
3) Hg is the chemical symbol for Mercury.

You see, the United States uses metric units for blood pressure. The units are in mm of mercury displacement. That is, the amount of pressure necessary to raise a column of mercury so many millimeters. The "European" units that you are looking for are another SI unit, the Kilopascal.

The reason for the switch to different units has a number of drivers, including the fact that mercury is a non-degradable, bioaccumable toxic substance, which is a serious threat to marine biology and there is mounting pressure from environmentalists to have it banned from use in hospitals.

To convert mm Hg into kilopascals divide by 7.5. To convert Kilopascals to mm Hg, multiply by 7.5
William J. Knight
Health Physicist
Los Alamos National Labs
User avatar
Knight
Expert
 
Posts: 309
Joined: Tue Jan 13, 2004 9:43 pm
Location: Los Alamos, NM


Return to Calculating things

Who is online

Users browsing this forum: Baidu [Spider] and 0 guests

Our Privacy Policy       Cooking Measures Converter       Metric conversions