Blood Pressure Monitor and Hypertension
Intialization range arrays:
UINT16 Range1[] = {179,…………………………………………………………………………... ,275};
UINT16 Range2[] = {275, ………………………………………………………………………….. ,391};
UINT16 Range3[] = {384, ………………………………………………………………………….. ,545};
UINT16 Range4[] = {545, ………………………………………………………………………….. ,763};
The TakeSample function disables the ADC and displays the results on the LCD.
DisplayResults();
vfnLCD_All_Segments_OFF ();
TASK=5;
4 Blood Pressure Monitor and Hypertension
Because hypertension (high blood pressure) becoming more and more common, technology has had to develop medical devices
to help control these diseases. These portable devices allow monitoring blood pressure at home.
4.1 Hypertension Fundamentals
Hypertension or high blood pressure is a condition when the blood pressure in the arteries is chronically elevated. In every heart
beat, the heart pumps blood through the arteries to rest of the body. Blood pressure is the force of the blood that is pushing up
against the walls of the blood vessels. If the pressure is too high, the heart has to work harder to pump and this can lead to
several diseases. A blood pressure monitor is a device used to measure arterial pressure as blood is pumped away from the heart.
Typically, from a user's perspective, a monitor includes an inflatable cuff to restrict blood flow and a manometer (pressure
meter) to measure the blood pressure. From a system designer’s perspective a blood pressure monitor is more complex. It
consists of a power supply, motor, memory, pressure sensor, and user interfaces that can include a display, keypad, or touchpad,
and audio as well as optional USB or wireless communication interfaces. For more information go to the
Implementing a Glucometer and Blood Pressure Monitor Medical Devices, Rev. 1, 4/2010
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Freescale Semiconductor, Inc.
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