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Sensors
7.1.4. Blood Pressure Monitor
Blood pressure is the pressure of the blood in the arteries as it is pumped around the body by the heart. When
your heart beats, it contracts and pushes blood through the arteries to the rest of your body. This force creates
pressure on the arteries. Blood pressure is recorded as two numbers—the systolic pressure (as the heart beats)
over the diastolic pressure (as the heart relaxes between beats).
7.1.4.1. Sensor features
Description: Monitoring at home is important for many people, especially if you have high blood pressure. Blood
pressure does not stay the same all the time. It changes to meet your body’s needs. It is aected by various factors
including body position, breathing or emotional state, exercise and sleep. It is best to measure blood pressure
when you are relaxed and sitting or lying down.
Figure: Blood Pressure sensor
Classication of blood pressure for adults (18 years and older)
Systolic (mm Hg) Diastolic (mm Hg)
Hypotension < 90 < 60
Desired
90–119
60–79
Prehypertension 120–139 80–89
Stage 1 Hypertension 140–159 90–99
Stage 2 Hypertension 160–179 100–109
Hypertensive Crisis ≥ 180
≥ 110
High blood pressure (hypertension) can lead to serious problems like heart attack, stroke or kidney disease. High
blood pressure usually does not have any symptoms, so you need to have your blood pressure checked regularly.
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