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READ THE MANUAL THOROUGHLY BEFORE USING THIS PRODUCT.
SAVE THESE INSTRUCTIONS
INDICATIONS FOR USE
This device uses the oscillometric method to automatically measure systolic and diastolic
blood pressure as well as heart rate. The intended use of this over-the-counter device is
for home use by adults aged 18 years and older with arm circumference ranging from
9” - 17” (approx. 23cm - 43cm) and 17” - 22” (43cm - 56cm). Measurement position is
on the upper arm. This blood pressure monitor (HL858A2-LT) detects the appearance
of irregular heartbeats during measurement; an indicator symbol will appear with
measuring reading. The BP Category Indicator will show the information with the readings
on the screen for the user tracking their blood pressure level. All values can be read in
one LCD panel.
ABOUT BLOOD PRESSURE
1. What is blood pressure?
Blood pressure is the measurement of the force of blood pushing against the walls of
the arteries.
Arterial blood pressure is constantly fluctuating during the cardiac cycle.
• The highest pressure in the cycle (systolic) represents the pressure in the artery
when the heart is beating.
• The lowest pressure in the cycle (diastolic) represents the pressure in the artery
when the heart is at rest.
Both the systolic and the diastolic measurements are necessary for a physician to
evaluate the status of a patient’s blood pressure.
Many factors such as anxiety, physical activity, or time of day can influence your blood
pressure. Blood pressure is typically lower in the mornings and increases from the
afternoon to the evening. On average, it is lower in the summer and higher in the
winter.
2. Why is it useful to measure blood pressure at home?
Having one’s blood pressure measured by a doctor in a hospital or clinical setting is
often associated with a phenomenon called “White Coat Hypertension,” where the
patient becomes nervous or anxious, causing a rise in blood pressure. Other factors
might also cause your blood pressure to rise at various times.
Medical professionals generally recommend home monitoring of readings
throughout the day following the “Rule of 3,” where you are encouraged to take your
blood pressure three times in a row (at 3 - 5 minute intervals), three times a day for
three days. After three days, an average of the results provides a more accurate idea of
your blood pressure.
MEASUREMENT METHOD
HL858A2-LT Automatic Upper Arm Blood Pressure Monitor measures blood pressure and
heart rate by oscillometric method, meaning the fluctuations in pressure are measured.
Once the cuff is wrapped around your upper arm, just turn on the monitor and inflation
automatically starts. The inflation of the cuff creates pressure around the arteries inside
upper arm. Within the cuff is a gauge which senses the fluctuations (oscillations) in
pressure. The fluctuation measured represents the degree of intensity that your arteries
contracting with each heart beat, and also a result of the pressure that the cuff has
placed on the upper arm. The monitor measures these contractions and converts the
information to a digital value. This is the result displayed on the monitor screen. Once the
measurement is complete, the cuff will automatically deflate.
ACCURACY
HL858A2-LT Automatic Upper Arm Blood Pressure Monitor has been clinically tested
against a scientific device called mercury sphygmomanometer, considered the gold
standard in blood pressure measurement.
All HL858A2-LT Automatic Upper Arm Blood Pressure Monitors have performed
equivalent to measurements taken with this scientific device and are within the accuracy
limits prescribed by the American National Standard for Electronic or Automated
Sphygmomanometers.
The SPHYGMOMANOMETER was clinically investigated according to the requirements of
ISO 81060-2:2013.
PRECAUSTIONS
• Read the Instruction Manual thoroughly before measuring and keep it at hand for your
reference at any time.
• The device is designed for home use and not suitable for clinical use.
• The patient is an intended operator, who can operate the device by himself or herself,
not necessarily by a physician or operator.
• This monitor is not intended for use in the MR environment.
• The device should not be used to either self-diagnose Hypertension or exclude the
diagnosis of Hypertension. If your blood pressure reading is out of normal range,
please consult your physician. Even your blood pressure reading is within the
“normal” range, the device cannot exclude the diagnosis of Hypertension.
• DO NOT take a measurement in a low (less than 41°F / 5°C) and high
(more than 104°F / 40°C) temperature, nor in a place outside humidity ranges
(15 % - 93 % R.H.), and atmospheric pressure ranges (700 - 1060hPa), or you may get
inaccurate readings.
• Wait 30 - 45 minutes before measurement if you’ve just consumed caffeinated
beverages or smoked cigarettes.
