00:01
Systemic blood pressure expresses the ratio of systolic pressure to diastolic pressure.
00:09
So both pressures are measured at the level of the heart and are expressed in millimeters of mercury, although the units are not usually written.
00:19
Normal systemic blood pressure is 120 over 80.
00:25
What are the maximum and minimum forces that the blood exerts against each square centimeter of the heart? for a person with normal blood pressure.
00:36
And part b, blood pressure is normally measured on the upper arm, the same height as the heart.
00:43
Due to therapy for an injury, a patient's upper arm is extended 30 centimeters above their heart.
00:49
In that position, what would be their systemic blood pressure reading expressed in the standard way if they have normal blood pressure, and then they tell us the density of blood is 10, 16, kilometers per meter cubed.
01:07
Okay.
01:09
So normal pressure, atmospheric pressure, phenon is 760 millimeters of mercury, which is 101 .3 times 10 to 3 newtons per meter squared.
01:34
So this is something that can be looked up.
01:38
So diastolic pressure is 80 millimeters of mercury.
01:47
So 80 millimeters times 101 .310 to the 3, newton's over meters squared, over 760 millimeters.
02:01
So this is our unit measurement...