I need to express blood pressure in terms of kPa. The conversion is 1kPa - 7.5mmHg, or .133 kPa - 1mmHg, but how would this be expressed? Just kPa subsituting mmHg, ie kPa/kPa?

After you convert the numbers you also change the unit. like 12/8 kPa. What is the problem?

if there's x mm then

 

BP in kPa= density of Hg* acceln due to gravity* x*

= 13500 *10*x

= 135000 *x

 

i think 1 mm= 135000 kPa

h(m).density(kg/m³).g(9.81m/s²)=pressure (Pa)

1mmHg=0.001*13500*9.81=133Pa or 0.133kPa

(Redfox was right about that)

oh ya i made a blunder. while converting pa to Kpa i multiplied by 1000 instead of dividing.

 

normal bp=120/80 mm=16/11 kPa