Pressure-Adjusted Heart Rate (PAR)

 

Parameters:

(1) heart rate in beats per minute

(2) central venous pressure (right atrial pressure) in mm Hg (CVP)

(3) mean arterial pressure in mm Hg (MAP)

 

mean arterial pressure =

= ((systolic blood pressure) + (2*(diastolic blood pressure))) / 3

 

PAR =

= (heart rate) * (CVP) / (MAP)

 

Interpretation:

• The normal PAR is less than 10 beats per minute. However, a person in shock could have value less than 3.