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LifeSource Blood Pressure Monitors
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LifeSource Blood Pressure Monitor
QUESTIONS & ANSWERS
Get answers to all your questions
about monitoring your blood
pressure and LifeSource Blood
Pressure Monitors by clicking on
the questions below.

My reading seems high. Is there something wrong with the monitor?

Why do my blood pressure readings vary so much during the day?

How do I select the correct cuff size?

I am told that I need to use a large cuff, but I fit into a standard. Can I still use a standard cuff?

What number should I set the pressure setting at on the Auto-Inflation (model UA-767)?

I have set the pressure to the correct level, but when I take my reading all that is displayed is ERR or ERR2. What am I doing wrong?

I have a Manual Inflation (model UA-702), and when I try to take my blood pressure a "V" appears on the display. What does that symbol mean?

Q: My reading seems high. Is there something wrong with the monitor?
A: Your cuff might be too small for you. A cuff that is too small yields a measurement that is higher than the correct blood pressure. Be sure to check that you are using the correct cuff size before taking your blood pressure. Please reference the section called "Select the correct cuff" in the instruction manual or see question 3 below to determine your correct cuff size. If your measurements still seem high, please consult your physician.
Q: Why do my blood pressure readings vary so much during the day?
A: An individual's blood pressure varies greatly from day to day and season to season. Normally, blood pressure rises during work or play and falls to its lowest levels during sleep. The best way to get consistent readings is to monitor your blood pressure at least once a day, at the same time so that you can minimize the effect that external factors have on the reading.
Q: How do I select the correct cuff size?
A: Using the correct size is important for an accurate reading. With your arm hanging at the side of your body, measure the circumference of your upper arm at the midpoint between shoulder and elbow. Based on that information, you can determine what size cuff would work for you using the chart below (also available in the instruction manual):
Small cuff 13 - 20 cm
Medium cuff 19 - 31 cm (7.5" - 12.2")
Large cuff 30 - 45 cm (11.8" - 17.7")
Q: I am told that I need to use a large cuff, but I fit into a standard. Can I still use a standard cuff?
A: Although you fit into a smaller cuff, you need to use the correct one to ensure an accurate reading. If your cuff is too small, your blood pressure reading will be artificially high. If your cuff is too large, you may get a lower-than-actual reading.
Q: What number should I set the pressure setting at on the Auto-Inflation (model UA-767)?
A: For the Auto-Inflation (model UA-767), you need to set the cuff inflation pressure switch to a number that is at least 30 mmHg higher than your expected systolic pressure. For example, if you believe your blood pressure to be 140 (systolic) over 90 (diastolic) set the switch to 180.

What if I set it too high?
You will still receive an accurate reading, but your arm will be constricted longer and you may feel some discomfort.

What if I set it too low?
The cuff will automatically deflate and reinflate again to the correct pressure.
Q: I have set the pressure to the correct level, but when I take my reading all that is displayed is ERR or ERR2. What am I doing wrong?
A: Although you may be sitting correctly, and have the pressure setting on the appropriate level, you must remain very still. The blood pressure monitor works by sensing vibration of blood as it moves under the cuff. Moving, talking and other causes of vibration may result in an error message. The symbols ERR or ERR2 mean that either you or the monitor moved during the reading.
Q: I have a Manual Inflation (model UA-702), and when I try to take my blood pressure a "V" appears on the display. What does that symbol mean?
A: The V symbol means there was air in the cuff prior to inflation. Make sure to squeeze the exhaust valve to release all the air out of the cuff before taking your blood pressure.
BLOOD PRESSURE LOG SHEET