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Blood pressure is the pressure inside the arteries. This pressure is exerted by the blood on
the artery walls, and is expressed in millimetres of mercury (mmHg).
When the heart contracts (systolic or maximum pressure): the pressure suddenly increases
in the arteries, this is the first number that your physician gives you when measuring your
blood pressure. It is normally under 15 (150 mmHg).
When the heart relaxes between beats, the pressure decreases (diastolic or minimum pres-
sure): This pressure corresponds to the second number your physician gives you when
measuring your blood pressure. It is generally between 5 and 9 (50 and 90 mmHg).
Both numbers provide important information about your health. The harder it is for the
blood to flow through the arteries, the higher these two numbers will be. If the blood pres-
sure is persistently above normal, this is called hypertension.
Blood pressure varies considerably throughout the day, and these variations are even more
significant in hypertensive subjects. It is lower in the morning and increases in the afternoon
and the evening. When sleeping, it decreases. Blood pressure is lower in summer than in win-
ter, and it rises noticeably with age. Blood pressure also increases during exercise, sex, preg-
nancy, stress, etc.
EXAMPLE OF THE BLOOD PRESSURE VARIATION IN A 35 YEAR OLD MALE
TV
14
12
10
8
6
4
0
12h
14h
16h
18h
20h
22h
Factors that may cause blood pressure changes: breathing, exercise, stress, anxiety, changes
in temperature and/or environment, meals, arguments, bathing, smoking, drinking alcohol...
Note : One or two blood pressure readings will not provide a true indication of your blood pressure, it is
important to measure it daily and regularly in order to obtain accurate data. Sharing your results with
your physician, may help him/her diagnose you and prevent potential health problems.
The World Health Organization (WHO) developed the blood pressure typology shown in
the table below (1999 - revised in 2003). Nevertheless, this typology is just a general guide,
as blood pressure varies from one person to another, based on age, weight, and health.
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BewellConnect - BW-BW1 - User Manual - 082015
SYS.
DIA.
24h
02h
04h
06h
08h
10h
IT IS RECOMMENDED THAT YOU CONSULT WITH YOUR PHYSICIAN IN ORDER TO DETERMINE
YOUR NORMAL BLOOD PRESSURE
TABLE FOR CLASSIFYING BLOOD PRESSURE VALUES (MMHG)
Systolic blood
Title
pressure (max)
Optimal values
Under 120
Normal
Under 130
Between 130
High Normal
and 139
Mild Hypertension
Between 140
Grade I
and 159
Moderate
Between 160
Hypertension
and 179
Grade II
Severe
Hypertension
Above 180
Grade III
Note : There is no universal standard established for hypotension (low blood pressure), but a systolic
pressure under 99 mmHg is generally considered hypotension.
3. CHARACTERISTICS
- Oscillometric method, measures on inflation
- Series 3 consecutive measurements, automatically
- Detecting cardiac arrhythmia
- Screen with a clear display of readings: systolic pressure, diastolic pressure, heart rate
- Display screen of the unit: Displays the first two readings and the average of the three
- Application: Automatic calculation and display of the average of the three readings
- Easy adjustment of rigid cuff
- Compact size, easy to carry
- Easy to use
- Automatic shutoff
- Data transfer to a phone/tablet the supports Bluetooth 4.0.
BewellConnect - BW-BW1 - User Manual - 082015
Diastolic blood
WHO Indication
pressure (min)
in Colour
Under 80
Green
Under 85
Green
Between 85 and 89
Orange
Between 90 and 99
Red
Between 100
Red
and 109
Above 110
Red
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