Question

Question #325da

Answer 1

The relationship between Mean Arterial Blood Pressure (`P`), Total peripheral resistance (`R`) and Cardiac Output (`V`) is given as

`P=VR`

Now, Cardiac output = `5.5 L /(min)` means this amount of blood is ejected from each ventricle per mts,so total cardiac output is `11 L/(min)` (from `2` ventricles)

So, `V= 11(10^-3/60) (m^3)/s`

Now, Mean Arterial Blood Pressure = Diastolic Blood Pressure + `1/3` Pulse Pressure = `95 + 1/3 (130-95)=106.67` `mm` of Hg `= 106.67 * 133.322= 14221.458 Pa`

So, `R = P/V = 77571.58 * 10^3 N.sm^-5`

But in reality this value will not match because of several factors like,efficiency of heart,patency of all blood vessels,radius of blood vessels which is not the same all through etc.