BIOS Diagnostics BD410 User manual

Instruction Manual
Model: BD410
biosmedical.com
Advancing
Home Monitoring
Since 1973
Automatic AFIB
BLOOD PRESSURE
MONITOR
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07.25.23

BIOS VP of Marketing - Mark Beaton accepts the 2017 Hypertension Canada Certificate
of Excellence from Angelique Berg, CEO of Hypertension Canada
Trusted by Canadians for 3 Generations
At BIOS Diagnostics™, we are proud of our legacy in blood pressure monitoring in Canada.
From the early 1930’s to 1987 we manufactured “Tycos” brand professional blood pressure
equipment for doctors and hospitals in Canada.
In the 1970’s we pioneered the first blood pressure devices for monitoring at home, and in the
1980’s we introduced digital technology in Canada. We haven’t been counting, but we know
that millions of our home-use monitors have been used by Canadians in the last 30 years.
All BIOS Diagnostics™ devices are developed in collaboration with physicians and clinically
tested to prove their measurement accuracy. For more information on clinical tests and other
BIOS medical products, visit our website at www.biosmedical.com.
If you have questions about this device or blood pressure monitoring at home, email us at
[email protected] or call the BIOS Medical Hotline [phone].

Blood Pressure Monitor - Automatic AFIB
Instruction Manual
Table of Contents
1. Introduction
1.1 Features
1.2 Important Information
1.2A Safety Information
1.2B Care of the Device
1.2C Comparing Readings to Other Blood Pressure Devices
1.2D Calibration
1.3 What Do Your Numbers Mean?
1.4 Normal Blood Pressure Values
1.5 Common Blood Pressure Questions and Answers
1.6 About AFIB Detection Mode (Averaging Mode)
1.6A Why Use AFIB Detection Mode?
1.6B Key Advantages
1.6C Medical Benefits
1.6D Measurement Sequence
1.7 Important Facts about Atrial Fibrillation (AFIB)
2. Getting Started
2.1 About the BD410
2.2 About the LCD Screen
2.3 Inserting the Batteries
2.4 Using the AC Adapter
3. Using the Device
3.1 Setting the Time and Date
3.2 Selecting the User
3.3 Measurement Mode Selection (Single or AFIB)
3.4 Obtaining Accurate Measurements
3.4A Tips on Taking Accurate Measurements
3.4B Common Sources of Error
3.4C Fitting the Easy-Fit Cuff
3.5 Measuring your Blood Pressure
3.6 Discontinuing a Measurement
3.7 Appearance of the Atrial Fibrillation (AFIB) Indicator (only in AFIB Detection mode)
3.8 BP Assessment Indicator

3.9 Viewing Previous Measurement Values
3.10 Clearing Measurement Values
3.11 Determining Your “Real” Average Blood Pressure at Home
4. Error Messages/Malfunctions
5. Care and Maintenance
6. Lifetime Limited Warranty
7. Technical Specifications

1. Introduction
Thank you for purchasing the BIOS Diagnostics™ Blood Pressure Monitor – Automatic AFIB. Designed for
convenient and easy operation, this device provides a simple, yet accurate method to measure your blood
pressure.
Your blood pressure is an important parameter that can be used to monitor your health. This device enables
you to monitor your blood pressure regularly, and maintain a record of your blood pressure measurements.
You can then use this record to assist your physician in diagnosing and maintaining a healthy blood
pressure level.
Indications for Use:
This blood pressure monitor (BD410) is intended to measure the systolic and diastolic pressure of an adult
individual by using a non-invasive oscillometric technology. This device is designed to be portable, and used
in both home and professional environments for every day blood pressure monitoring.
1.1 Features
The BD410 is a fully automatic, digital, blood pressure measuring device with AFIB detection technology. It
can store up to 960 blood pressure readings across 4 users.
It provides a fast and reliable measurement of systolic and diastolic blood pressure as well as heart rate
using the oscillometric measurement method.
AFIB detection is the world’s leading digital blood pressure measurement technology for the early
detection of atrial fibrillation (AFIB) and hypertension. These are the two top risk factors of heart disease
and stroke, which increase the risk of getting a stroke or heart disease in the future. It is important to
detect AFIB and hypertension at an early stage, even though you may not experience any symptoms.
Appropriate treatment can reduce your risk of suffering a stroke. For this reason, it is recommended that
you visit your doctor when the device gives an AFIB signal during your blood pressure measurement.
• AFIB Detection Mode - Using three consecutive measurements, your result is calculated and displayed
as a single averaged measurement on the display screen. AFIB icon is displayed when atrial fibrillation is
detected during a blood pressure reading.
• Irregular Heartbeat Detection
• Averaging Features - Averages the last 3 measurements, averages AM and PM readings
• Systolic & Diastolic Trending - Memory function displays upward, downward or stable trends
• BP Assessment Indicator - Displays the range between which your blood pressure values lie
• Memory Feature - 4 users, 240 blood pressure readings each, with time and date
This powerful medical tool automatically stores all your blood pressure readings. By clicking the viewing
options the user can review the readings in multiple forms including: by date, morning vs. evening
readings, isolated systolic or diastolic or pulse.
This device is easy to use and has been proven in clinical studies to provide excellent accuracy. Before
using the BD410, read this instruction manual carefully and keep it in a safe place.

1.2 Important Information
Refer to the following sections to learn about important safety instructions and how to take care of the BIOS
Diagnostics™ Blood Pressure Monitor – Automatic AFIB.
1.2A Safety Information
• Self-measurement means control, not diagnosis or treatment. Your values must always be discussed
with your doctor or a physician who is familiar with your family history.
• If you are undergoing medical treatment and receiving medication, consult your doctor to determine
the most appropriate time to measure your blood pressure. Never alter the dosages of any medication
without direction from your doctor.
• Your blood pressure depends on several factors, such as age, gender, weight and physical condition. It
also depends on the environment and your state of mind at the time of measurement. In general, your
blood pressure is lower when you are asleep and higher when you are active. Your blood pressure may
be higher when recorded at a hospital or a clinic and may be lower when measured in the relaxing
comfort of your home. Due to these variations, we recommend that you record your blood pressure
regularly at home as well as at your doctor’s clinic.
• Try to record your blood pressure regularly at the same time of the day and under the same conditions.
This will help your physician detect any extreme variations in your blood pressure and thus treat you
accordingly.
• Morning Hypertension (> 135 / 85 mmHg): Recently, several studies have identified elevated
cardiovascular risks (heart failure, stroke, angina) associated with “morning hypertension”. There is a
typical rise in blood pressure during the physiological changes from sleep to arising for the day.
• The ideal time to measure your blood pressure is in the morning just after you wake up, before
breakfast and any physical activity, and in the absence of the urge to urinate. If this is not possible, try
to take the measurements later in the morning, before you start any physical activity. Relax for a few
minutes before you record your blood pressure.
• Your blood pressure increases or decreases under the following circumstances:
Blood pressure is higher than normal:
— When you are excited, nervous, or tense
— After taking a bath or using a hot tub
— During and after exercise or strenuous physical activity
— When it is cold
— Within one hour after meals
— After drinking tea, coffee, or other caffeinated drinks
— After smoking tobacco
— When your bladder is full
Blood pressure is lower than normal:
— After consuming alcohol
— While taking a bath or using a hot tub
• The pulse display is not suitable for checking the frequency of heart pacemakers.

• If you have been diagnosed with a severe arrhythmia or irregular heartbeat, vascular constriction, liver
disorders, or diabetes, have a cardiac pacemaker, or are pregnant, measurements made with this
instrument should only be evaluated after a consultation with your doctor.
• Take care while handling the batteries in the device. Incorrect usage may cause battery fluid leakage.
To prevent such accidents, refer to the following instructions:
— Insert batteries with the correct polarity.
— Turn off power after use. Remove and store the batteries if you are not planning to use the device
for an extended period of time.
— Do not mix different types, brands, or size of batteries. This may cause damage to the product.
— Do not mix old and new batteries.
— Remove batteries and dispose of them according to the proper regulations in your area.
— Do not disassemble batteries or expose them to heat or fire.
— Do not short-circuit the batteries.
— Do not use rechargeable batteries.
1.2B Care of the Device
For prolonged life of your blood pressure monitor, note the following instructions:
• Do not drop or bang the unit. Prevent sudden jerks, jars, or shocks to the device to prevent damage.
• Do not insert any foreign objects in any device openings or vents.
• Do not disassemble the unit.
• If the unit has been stored at very low or freezing temperatures, allow to reach room temperature before
using it.
• Do not store the unit in direct sunlight, high humidity, or in places with a lot of dust.
• Clean the device with a soft dry cloth. Do not use gasoline, thinner or similar solvents. Carefully remove
spots on the cuff with a damp cloth and soap. Do not wash the cuff.
• Do not use the device if you think it is damaged or if anything appears unusual.
• Ensure that children do not use this device unsupervised; some parts are small enough to be
swallowed.
• Using the unit in the immediate vicinity of mobile phones, microwave appliances or other devices with
strong electromagnetic fields may result in impaired functioning.
• Do not use this device close to strong electromagnetic fields, such as mobile telephones or radio
installations. Keep a distance from such devices when using this unit.
1.2C Comparing Readings to Other Blood Pressure Devices
Many questions arise when two blood pressure devices are compared in an effort to check accuracy. An
accurate comparison requires repeatable measurements under the same conditions to “reference device”
with known accuracy. Significant time is required to reduce naturally occurring blood pressure variability
during the test. The subject should be seated comfortably with feet flat on the floor, and have rested for 5
minutes before the first reading to allow blood pressure levels to stabilize.

The patients back, elbow and forearm should be supported, and the middle of the cuff should be at the
level of the right atrium. There should be no talking or moving during the measurement and if comparing
to an aneroid gauge or mercury column, observers should avoid parallax and be careful not to round
measurements.
The most accurate way to compare devices is to take two readings at the same time. However, most
people and doctor’s offices do not have the equipment necessary to measure blood pressure from two
devices simultaneously. To take sequential measurements properly requires a pair of initial measurements
to determine the subjects blood pressure level: first with the reference equipment, followed by 60 seconds,
then with the monitor-under-test. The actual accuracy test requires three pairs of measurements with 60
seconds between measurements. These measurements are averaged and a comparison can be made.
Since most people tend to relax and their blood pressure falls with subsequent measurements, following
this protocol reduces these natural changes in Blood Pressure levels. The standard technical error of both
consumer and professional devices is normally ±3 mmHg, so a discrepancy of 6 mmHg is acceptable even
when the devices are working within their specifications.
Any comparisons without a known “reference device” and not following the procedures described above will
yield unreliable results. In addition, to do an accuracy test properly the reference device must also be tested
to a known reference to confirm its accuracy, prior to being used as the reference for comparisons.
1.2D Calibration
Digital blood pressure monitors do not require regular recalibration, unless the product has been dropped
and internal parts have been damaged. If the unit turns on and does not display an error code, the product
is working properly. In extremely rare cases, the cuff may have developed a pin-hole leak, or the gasket
where the cuff connector enters the monitor may not have a proper seal; both of these leaking air issues
will potentially cause errors in accuracy, but otherwise the product will work accurately without drifting out
of calibration.
1.3 What do your Numbers Mean?
Blood pressure is the pressure in your blood vessels while blood circulates throughout your body. High blood
pressure or “Hypertension” is the pressure at which ones normal average blood pressure is considered
too high and other health risks including: heart attack, stroke, dementia, kidney failure, heart disease and
erectile dysfunction may occur. It is expressed as two numbers: systolic/diastolic 120 mmHg/80 mmHg
(mmHg = millimeters of mercury). “Systolic” numbers refer to the pressure on the walls of your arteries
while the heart is contracting and pushing blood. “Diastolic” pressure is the lower number when the heart is
at rest and relaxed. A simple way to understand this is to picture a garden hose. When the tap is turned on,
the immediate pressure on the walls of the hose is the “systolic” value, and when the tap is turned off it is
the “diastolic” number.
There are many different causes of high blood pressure. We differentiate between common primary
(essential) hypertension, and secondary hypertension. The latter group can be ascribed to specific organic
malfunctions. Please consult your doctor for information about the possible origins of your own increased
blood pressure values.

1.4 Normal Blood Pressure Values
When rested, and measuring your blood pressure at home, measurements with diastolic pressure readings
above 85 mmHg or systolic readings over 135 mmHg are considered high. If you obtain consistent readings
in this range, consult your doctor immediately. High blood pressure values over time can damage blood
vessels, vital organs such as the kidney, and your heart. With blood pressure values that are too low (i.e.,
systolic values under 105 mmHg or diastolic values under 60 mmHg), consult with your doctor.
Systolic Diastolic Comment
Below 120 Less than
80 This range is considered “Optimal”
120-129 80-84 This range is considered ‘Normal’. Introduce/continue healthy lifestyle
alterations to maintain healthy blood pressure.
130 - 139 85 - 89
This range is considered “Pre-hypertension”. Discuss with your health
care professional. Lifestyle modifications maybe required to avoid
advancing into hypertension.
140 - 159 90 - 99
This is in the “Hypertension” range. Discuss with your health care
professional. Medication(s) and lifestyle modifications are typical
treatments.
160 and
above
100 and
above
Discuss with your medical professional, medication(s) and lifestyle
modifications are necessary to control your hypertension
Adapted From: Understanding and Managing your blood pressure; Hypertension Canada.
Note: A diagnosis of high blood pressure must be confirmed with a medical professional. A
doctor should evaluate any unusual blood pressure readings. Additionally, lower targets may
be appropriate for some populations such as African-Americans, the elderly, or patients with
underlying issues such as diabetes mellitus or chronic kidney disease.
Important for Canadians:
* Hypertension measured at home ≥ 135/85
* Hypertension measured at a physician’s office ≥ 140/90
* Hypertension measured at a physician’s office for a diabetic patient ≥ 130/80
For further information, see our website www.biosmedical.com.
1.5 Common Blood Pressure Questions and Answers
a) Why is my blood pressure reading always different?
Your blood pressure changes constantly. It is quite normal for blood pressure to fluctuate as much as 50
mmHg throughout the day. Blood pressure is normally lowest at night, but increases during waking hours
when the stress and activities of everyday life are highest.

mmHg
AM Time PM
b) Why is the doctor’s reading different from the reading taken at home?
Your blood pressure can vary due to the environment (temperature, nervous condition). When measuring
blood pressure at the doctor’s office, it is possible for blood pressure to increase due to anxiety and tension,
this is known as “White Coat Hypertension”. Home blood pressure monitoring has been known to predict
health outcomes better than office blood pressure measurements.
c) Why should I monitor blood pressure at home?
One or two readings will not provide a true indication of your normal blood pressure. It is important to
take regular, daily measurements and to keep records over a period of time. This information can be used
to assist your physician in diagnosing and preventing potential health problems. Expert opinion suggests
patients with normal blood pressure can benefit from one week of measuring every three months.
1.6 About AFIB Detection Mode (Averaging Mode)
AFIB Detection Mode (Averaging Mode) is a technology that enables optimum reliability in self-measurement
of blood pressure.
An advanced measurement accuracy is achieved by the automatic analysis of three successive
measurements, with short rest periods in between.
This technology provides reliable values for the doctor, and can be used as the basis for reliable diagnostics
and medication therapy for high blood pressure.
• Reliable patient self-measurement data for the doctor
• Safe hypertension diagnostic tool
• Reliable therapy control
1.6A Why Use AFIB Detection Mode?
• Human blood pressure is not stable

1.6B Key Advantages
The technology provides reduction in:
• Device scattering
• Insufficient rest prior to measurement
• Movement effects (i.e. coughing, talking, movement)
• Cuff positioning influences
1.6C Medical Benefits
• Improved accuracy
1.6D Measurement Sequence
• Single results are not displayed
• The following illustration provides a flow chart of the Averaging Sequence
Measurement 1 30 Second Rest
30 Second RestMeasurement 3Data Analysis
Averaged Result
Measurement 2
1.7 Important Facts About Atrial Fibrillation (AFIB)
What is Atrial Fibrillation (AFIB)?
Normally, your heart contracts and relaxes to a regular beat. Certain cells in your heart produce electrical
signals that cause the heart to contract and pump blood. Atrial fibrillation occurs when rapid, disorganized
electrical signals are present in the heart’s two upper chambers, called the atria; causing them to
contract quickly and irregularly (this is called fibrillation). Atrial fibrillation is the most common form of
heart arrhythmia or irregular heart beat. You can live with atrial fibrillation, but it can lead to other rhythm
problems, chronic fatigue, heart failure and - worst of all - a stroke. You will need a doctor to help you
control the problem.
How Does AFIB Impact Family or Me?
One in every six strokes is AFIB-related. While individuals above the age of 65 are more likely to have AFIB,
individuals as young as 40 can exhibit AFIB. Early diagnosis can help reduce the risk of a stroke.

AFIB Detection Provides a Convenient Way to Screen for AFIB
(only in AFIB Detection mode)
Knowing your blood pressure and knowing whether or not you or your family members have AFIB can help
reduce the risk of stroke. AFIB detection provides a convenient way to screen for AFIB while taking your
blood pressure.
Risk Factors You Can Control
High blood pressure and AFIB are both considered controllable risk factors for strokes. Knowing your blood
pressure and knowing whether or not you have AFIB is the first step in proactive stroke prevention.
2. Getting Started
2.1 About the BD410
a) This section describes the various components of the Blood Pressure Monitor.
b) Upper arm cuffs:
• BD41RC Easy-Fit Cuff (Wide Range) (Included)
Type BD41RC wide range cuff is for an arm circumference of 24-42 cm (9.4” - 16.5”)

• BD41SC Soft Cuff (Standard Wide Range) (Accessory Item Sold Separately)
Type BD41SC wide range cuff is for an arm circumference of 22-44 cm (9” - 17”)
2.2 About the LCD Screen
The LCD screen displays the systolic and diastolic blood pressure measurements along with your heart rate.
It also displays previously recorded measurements and the date and time, when the appropriate button is
pressed.
2.3 Inserting the Batteries (not included)
Follow these steps to insert the four “AAA” batteries in the device.
1. Open the battery compartment cover in the direction shown.
2. Insert the four “AAA” batteries with the correct polarity as indicated.
3. Replace the battery compartment cover.
NOTE: When the batteries are removed from the device, the date/time will need
to be reset.
Attention!
• When batteries are depleted the icon, and “E6” will appear on the display.
Batteries must be replaced.
• Please use “AAA” Long-Life or Alkaline 1.5V batteries.
• If the blood pressure monitor is left unused for long periods, please remove the
batteries from the device.
• Do not mix old and new batteries.Do not mix alkaline, standard (carbon-zinc) or
rechargeable batteries.
Pressure Unit
Optimal
Normal
Detection Mode Icon
Atrial Fibrillation
Irregular Heartbeat Indicator
Heart Icon/ Pre-Hypertension
Memory Number/ AVG Icon
Stage 1 Hypertension
USER
Memory Icon
Stage 2 Hypertension
Date/Time
Stage 3 Hypertension
Systolic Pressure
Pressurizing
Releasing Air
Battery Indicator
Systolic
Pressure Trend
Diastolic
Pressure Trend
Diastolic
Pressure
Atrial
Fibrillation Icon
Pulse
Rate

2.4 Using the AC Adapter
An AC adapter has been included with your device
(output 6V DC/600mA). Use only the provided AC adapter to
avoid damaging the unit.
1. Ensure that the AC adapter and cable are not damaged.
2. Plug the adapter cable into the AC adapter port on the blood
pressure monitor.
3. Plug the adapter into your electrical outlet. When the AC
adapter is connected, no battery current is consumed.
NOTE: When adapter is removed from the device, the date/time will need to be reset.
3. Using the Device
This section describes how to get the maximum benefit from your BD410 blood pressure monitor.
Follow the instructions carefully to get an accurate measurement of your blood pressure and pulse rate.
3.1 Setting the Time and Date
NOTE:You must set up Time and Date when installing new batteries, or
connecting to a power supply.
1. After installing the new power source, use the [<]/[>] buttons to select the YEAR,
confirm selection pressing the [M] button.
2. Repeat the same process to set the MONTH by using the [<]/[>] buttons, and the [M]
button to confirm.
3. The same process is repeated to set the DATE. Use the [<]/[>] buttons to select, and
the [M] button to confirm.
4. Finally, the TIME can be set. HOUR is selected first, then MINUTE using the [<]/[>] buttons to select, and
the [M] button to confirm.
NOTE: In order to change any setting you must repeat the process and confirm each
setting by pushing the [M] button.
NOTE: When device is already connected to power, and in clock mode (sleep). Press and
hold the [M] key for 3 seconds until the content on the display blinks. Follow the same procedure as above
to set.

3.2 Selecting the User
1. Start by pressing the [ ] to turn the device on.
2. Using the [<]/[>] buttons, select user 1, 2, 3, or 4. Confirm this selection by pressing the [ ] button.
3.3 Measurement Mode Selection (Single or AFIB)
NOTE: The device is automatically set to Single measurement mode.
Single Mode:
a) If you would like to take a Single Mode measurement, simply turn the device on using the [ ] button,
then press the [ ] button again to start measurement.
b) Single mode only takes 1 measurement, and will display your reading once the cuff has fully deflated.
AFIB Detection Mode:
Clinical studies demonstrate taking multiple blood pressure readings and calculating an “average” is more
likely to determine your true blood pressure. Your premium blood pressure unit allows you to switch the unit
to an Average Mode setting that automatically takes multiple readings!
NOTE: Make sure your cuff is securely on your arm before entering into AFIB mode, as the first
measurement is taken immediately
a) If you would like to take an AFIB Detection Mode measurement, turn the device on using the [ ]
button.
Press and hold the [ ] button for 5 seconds until you see the light on the button illuminate, and the
[ ] appear on the screen as the first measurement begins to be taken.
b) Average Mode takes 3 measurements in succession and calculates the result and displays it as a
single average measurement. A [ ] symbol on the display indicates that the unit is set to the AFIB
Detection averaging mode.
c) There will be a 30 second resting time in-between each measurement. The unit will count down from
30 seconds.
NOTE: If an error occurs during measurements in this mode, the device will return to stand-by mode, and
no result will be displayed. Please ensure the cuff is correctly fitted, power source is strong, and try again.
NOTE: AFIB detection can only occur when in this mode.
NOTE: If AFIB is detected during these readings the icon will be shown, and will blink.

Enter AFIB Detection mode.
First measurement starts.
[] icon blinks.
Measurement #1 is in progess.
30 second timer starts
to count down.
[ ] icon blinks.
Measurement #2 is in progress.
[ ] icon blinks.
Measurement #3 is
in progress.
30 second timer starts to
count down.
Averaged measurement
result is shown.

3.4 Obtaining Accurate Measurements
Your blood pressure can vary based on numerous factors, physiological conditions, and your surroundings.
Follow these guidelines to obtain accurate and error-free measurements of your blood pressure and pulse rate.
3.4A Tips on Taking Accurate Measurements
In the morning before breakfast,
2 hours after dinner, before taking
medication.
Avoid coffee and smoking within the
hour, and no exercise 30 minutes
before measuring.
Do not speak while taking the
measurement.
Sit with legs uncrossed so as not to
restrict blood flow.
Empty bladder (if necessary).
Rest quietly for 5 minutes. Remain calm
and quiet while the measurement is in
process.
Take measurements on the non
dominant arm.
Sit with back supported and
measurement arm resting on a table. Sit
with feet flat on the floor.
Ensure that the cuff is level with the
heart while the arm is supported on
the table.
3.4B Common Sources of Error
All efforts by the patient to support the arm can increase the blood pressure. Make sure you are in a
comfortable, relaxed position and do not activate any of the muscles in the measurement arm during the
measurement. Use a cushion for support if necessary.
ATTENTION:
Comparable blood pressure measurements always require the same
conditions with a peaceful and calm environment. Ensure that you take
measurements under the same conditions to obtain an accurate and reliable
reading.
• If the arm artery lies considerably lower or higher than the heart, an erroneous value of blood pressure is
measured. Each 15 cm difference in height results in a measurement error of 10 mmHg.
• A loose cuff causes false measurement values.
• With repeated measurements, blood accumulates in the arm, which can lead to false results.
Consecutive blood pressure measurements should be repeated after at least a 45 second pause or after
the arm has been held up in order to allow the accumulated blood to flow away.

3.4C Fitting the Easy Fit Cuff
a) The Easy-Fit Cuff comes ready to use! In preparation for fitting the cuff
to your arm size, you will want to start by loosening it. Holding the cuff so
that the tubing is facing away from you, grab the adjustable dial and pull
up until you hear a ‘click’. When the dial is in this position, the cuff can
easily be widened to its largest size. Do this by holding either side of the
cuff, and pulling in opposite directions as shown in the image. Press the
dial back in to prepare for individual sizing.
b) Place the cuff around your bare arm. Using the adjustable dial (ensure the
dial has been pushed back in) turn it clockwise to tighten the cuff to the
desired fit. Make sure the bottom edge of the cuff is about 1” (2-3 cm)
above the elbow joint. Adjust the cuff so that the rubber tubing of the cuff
lies over the brachial artery, which runs on the inside of the arm (see Fig.
b). The tube should be over the brachial artery.
NOTE: Measure on your non-dominant arm, unless there is a >10 mmHg
difference with the other arm, in which case use the arm with the higher
pressure.
c) The cuff should fit snugly around the arm, but not too tight. You should
be able to fit two fingers under the cuff. If the cuff is the wrong size, the
device will not measure your blood pressure accurately.
d) Place arm on to the table (palm facing upwards) so that the cuff is at the
same level as the heart. Make sure there is no kink in the hose.
e) You can adjust the level of your arm by putting a cushion under your arm.
Ideally, the cuff should be at heart level.
f) Remain seated in a comfortable room temperature space for at least 5
minutes, then start the measurement.
g) For those who cannot put the cuff on the left arm, put it on the right arm
as shown.
a)
b)
c)
d)
e)
g)

h) More than 6 consecutive measurements will cause blood accumulation in the lower arm which will
affect the measuring results. To improve reading accuracy, raise the arm being measured, squeeze and
relax your hand several times, then take another measurement. Another option is to take the cuff off
and wait at least 5 minutes before repeating measurement.
i) If this device was stored in low temperature, it is necessary to leave it in room temperature for at least 1
hour before use; otherwise the measurement may be inaccurate.
COMMENT: Continue to use the same arm for comparisons. It is not unusual for there to be a difference in
blood pressure between arms. Initially, check BP on both arms. If one arm is 10mmHg higher, continue to
measure on that arm. Comparable blood pressure measurements always require the same conditions (Relax
for several minutes before taking a measurement).
ATTENTION: Do not use a cuff other than the original cuff contained in this kit, or a cuff designed
for this specific machine.
NOTE: If you have purchased the BD41SC wide range soft cuff please visit www.biosmedical.com for a
video that illustrates proper fitting.
3.5 Measuring Your Blood Pressure
After following the guidelines described in the previous section and placing the cuff around your upper arm,
you are now ready to measure your blood pressure. Follow these steps to record your measurement.
1. Press the [ ] button to turn on the device; the LCD screen will turn on. Press [ ] again and start
measurement. The cuff begins to inflate while the increasing cuff pressure is displayed on the screen.
After the suitable inflation pressure is reached, the cuff stops inflating and the pressure gradually falls.
The cuff will fully deflate when the measurement is completed. The systolic and diastolic blood pressure
values along with the pulse rate are displayed on the screen.
NOTE: See section 3.3 for instructions on how to select measurement mode.
2. When finished with the unit you can press the [ ] button to force the unit into clock mode (sleep).
*The device will automatically go into clock mode (sleep) if idle for 2 minutes.
NOTE: In clock mode (sleep), the time will continuously be displayed on the screen.
3.6 Discontinuing a Measurement
If it is necessary to interrupt a blood pressure measurement for any reason (e.g. the patient feels unwell),
the [ ] button can be pressed at any time. The device then immediately lowers the cuff pressure
automatically.

3.7 Appearance of the Atrial Fibrillation (AFIB) Indicator (only in AFIB
Detection mode)
This symbol [ ] indicates that atrial fibrillation was detected during the measurement. If AFIB is present
during blood pressure measurement, the AFIB Indicator is displayed. The AFIB symbol [ ] will blink
after the measurement is complete (if detected). In this case, the result may deviate from your normal
blood pressure. It is highly recommended to take an additional measurement an hour later to increase the
specificity of the detection. In most cases, this is no cause for concern. However, if the symbol appears on a
regular basis (e.g. several times a week with measurements taken daily) we advise you to visit your doctor.
Please, provide the following explanation:
Information for the doctor on frequent appearance of the atrial fibrillation indicator
This instrument is an oscillometric blood pressure monitor that also analyses pulse frequency during
measurement. The instrument is clinically tested.
The [ ] symbol is displayed after the analysis if atrial fibrillation occurred during measurement. If
the symbol appears more frequently (e.g. several times per week on measurements performed daily), we
recommend the patient to seek medical advice. The instrument does not replace a cardiac examination, but
serves to detect atrial fibrillation at an early stage.
• Sometimes the device will detect atrial fibrillation even when it is not there. This can happen if the arm
moves during the reading or another rhythm problem is present. Keep the arm still during the reading.
Visiting your doctor with this device may be necessary to check out any rhythm problems.
• This device may not detect atrial fibrillation in people with pacemakers or defibrillators.
3.8 BP Assessment Indicator
The bars on the left hand side of the display show you the range within which the indicated blood pressure
value lies. Depending on the height of the bar, the readout value is either within the normal (green),
Hypertension (yellow/orange) or danger (red) range.
The classification is based on standards adopted from the WHO*
Refer to the chart below for details of the classification.
Reference Material: Journal of Hypertension 1999, Vol 17 No. 2
SYS
180
160-179
110
100-109
90-99
85-89
80-84
80
140-159
130-139
120-129
120
(mmHg) DIA
Red
Orange
Yellow
Green
Green
Green
• If the bar lines up with the first or second green bar, your
measurement is in the green zone, or “Normal”.
• If the bar lines up with the third bar, it is still in the green zone, but
is considered high normal pre-hypertension.
• If the bar lines up with the fourth bar, it is in the yellow “Stage 1
Hypertension” zone.
• If the bar lines up with the fifth bar, it is in the orange “Stage 2
Hypertension” zone.
• If the bar lines up with the sixth bar, it is in the red “Stage 3
Hypertension” zone.