Project Type
Instructions
Date: October 30 2020
Customer: Thermor Ltd
Job Number: TH4674
Item Number: BD201
Designer: Natalia Sigenza
PO: 24797-00
Revision: A
Artwork is not to be amended or scaled. If any changes
are required please send through Thermor office with
instructions, and we will amend here and resend artwork
through. PLEASE RETURN WITH SIGNATURE
Contact: Graphic’s Department
Colour Breakdown
Reason For Project:
New Item:
New Branding:
Design Update:
N/A: X
UPC (For Reference Only)
• 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” number, 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.
