Description

The systolic pressure is the maximum arterial pressure during the cardiac cycle, achieved during systole, whereas the diastolic pressure is the minimum, achieved during diastole. The pulse pressure is the difference between these two pressures. The mean arterial pressure is the area under the arterial pressure curve divided by the cardiac cycle duration (Berne); it can be reasonably approximated by calculations using systolic and diastolic pressures.

pulse pressure =

=  (systolic systemic arterial pressure) - (diastolic systemic arterial pressure)

mean systemic arterial pressure =

= (diastolic systemic arterial pressure) + ((1/3) * (pulse pressure)) =

= (diastolic systemic arterial pressure) + ((1/3) * ((systolic systemic arterial pressure) - (diastolic systemic arterial pressure))) =

= ((systolic systemic arterial pressure) + (2 * (diastolic systemic arterial pressure))) / 3

rate pressure product =

= (systolic blood pressure in mm Hg) * (heart rate in beats per min) / 1000

Interpretation:

• normal systolic arterial pressure: 100 - 140 mm Hg

• normal diastolic arterial pressure: 60 - 90 mm Hg

• normal pulse pressure: 30 - 50 mm Hg

• normal mean arterial pressure: 70 - 100 mm Hg

• normal heart rate: 60-100 beats per minute