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WHAT IS THE BLOOD PRESURE:
Blood pressure (BP) is the pressure exerted by circulating blood upon the walls of blood vessels, and is one of the principal
vital signs. When used without further specification, "blood pressure" usually refers to the arterial pressure of the systemic circulation. During each heartbeat, blood pressure varies between a maximum (systolic) and a minimum (diastolic) pressure.
[1] The blood pressure in the circulation is principally due to the pumping action of the heart.
[2]
Differences in mean blood pressure are responsible for blood flow from
one location to another in the circulation. The rate of mean blood flow
depends on the resistance to flow presented by the blood vessels. Mean
blood pressure decreases as the circulating blood moves away from the
heart through
arteries,
capillaries and
veins due to
viscous
losses of energy. Mean blood pressure drops over the whole circulation,
although most of the fall occurs along the small arteries and
arterioles.
[3] Gravity affects blood pressure via
hydrostatic forces (e.g., during standing) and valves in veins, breathing, and pumping from contraction of skeletal muscles also influence blood pressure in veins.
[2]
The measurement
blood pressure without further specification usually refers to the systemic arterial pressure measured at a person's upper arm and is a measure of the pressure in the brachial artery, major
artery
in the upper arm. A person’s blood pressure is usually expressed in
terms of the systolic pressure over diastolic pressure and is measured
in millimetres of mercury (mmHg), for example 140/90.
app detais and working:
"Turn your Android phone to a personal blood pressure monitoring machine."This is an application for recording your blood pressure (BP). BP varies during a day, we need to record several times a day.We can set goal BP and check chart and graph of BP by using this application.
Column A of the exported csv file is "UNIX TIMESTAMP".
How to convert:
( MAC Numbers )
"=DATE(1970, 1, 1) + (Value of column "A")/60/60/24"
Latest version: 1.4.5 (for Android version 2.1 and higher)
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