The Blood Pressure calculator compute blood pressure (BP) based on cardiac output (Qc) and blood flow resistance (R).
INSTRUCTIONS: Choose units and enter the following:
Blood Pressure (BP): The calculator return the pressure in millimeters of mercury (mmHG). However, this can be automatically converted to compatible units via the pull-down menu.
Heart / Blood Calculators:
Blood pressure (BP) is a measure of the force being exerted on the walls of arteries as blood is pumped out of the heart. The formula for Blood Pressure is:
Where:
BP measurements are usually taken on the left arm (above the elbow) with a ‘sphygmomanometer’ and a stethoscope. The sphygmomanometer consists of an inflatable cuff with a pressure gauge. When inflated the cuff blocks the flow of blood to the arm below the cuff. As the cuff is allowed to slowly deflate, the measurer listens through the stethoscope to sounds as the artery opens and allows blood flow to continue again. A blood pressure range of 110/70 to 120/80 is considered normal.
It's advisable to take BP measurements when: