BLOOD PRESSURE MONITORING
If you suffer from a Chronic Illness such as
Heart Disease/Hypertension, you may be asked to monitor your blood pressure
levels at home.
If this is the case, this page will provide you
with detailed information about where, how and why blood pressure monitoring is
done. It will give you details of retailers who sell recommended Blood Pressure
Monitors and provide you with a downloadable Blood Pressure Monitoring Sheet,
to note down your readings.
Why Should I Measure My Blood Pressure at Home?
Blood Pressure Monitoring in a Doctor's Surgery
setting, may cause apprehension and produce elevated readings
(See article below on ‘White Coat Hypertension).
Measuring your blood pressure at home reduces
the effects of outside influences on readings, this supplements the
Doctor/Nurse's readings and provides a more accurate and complete blood
pressure history.
What
do I Need to Measure My Blood Pressure
- Rest
for 3-5 minutes before measuring your blood pressure. Do not talk.
- Sit
in a comfortable position, with your legs and ankles uncrossed and your
back supported.
- Place
your arm, raised to the level of your heart, on a table or desk and sit
still.
- Wrap
the correctly sized cuff snugly around the upper part of your bare arm
(one inch above the crease of your elbow). The cuff should fit snugly but
still allow one fingertip under the cuff.
- Be
certain that the bottom of the cuff is one inch above the crease of your
elbow.
How Do I Use a Digital Monitor
- Put
the cuff around the arm. Turn the power on and start the machine.
- The
cuff will inflate by itself with a push of the start button. After the
cuff has inflated, the automatic mechanism will slowly reduce the cuff
pressure.
- Look
at the display window to see your blood pressure reading. The machine will
show your systolic and diastolic blood pressures on the screen. Write
these down on the form provided.
- If
you want to repeat the measurement, wait 2 to 3 minutes before reinflating
the cuff.
Should I Buy My Own Blood Pressure Monitor?
For some patients monitoring their own blood pressure at
home is very useful. Doctors encourage this as a more accurate method of
establishing the need for medication and change.
Taking and monitoring your own blood pressure can make
you feel more confident and also help you to understand more about blood
pressure what effects it and how it changes. However you need to think
carefully before buying a monitor.
What Type of Monitor
is Best?
There are many different blood pressure monitors
available, which can be bought directly from the manufacturers, or from larger
Chemists. Most measure pressure from the upper part of your arm the same way
that your Doctor or Nurse measures it.
Some machines measure blood pressure from the wrist or
finger, these are not recommended as they do not measure pressure very
accurately. They are extremely sensitive to body temperature and they are
usually more expensive.
Cost may be an important factor. Since home blood
pressure units vary in price, you may have to shop around. The most expensive
units may not be the best or the most accurate.
The following automatic blood pressure monitors are all
upper arm and have been validated by the British Hypertension Society (BHS).
·
Ø Omron HEM 705-CP
·
Ø Omron M5-1
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Ø
Omron
M4
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Ø
Omron
713C
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Ø
Omron
735C
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Ø
A&D
Instruments UA-767
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Blood Pressure Reading In Relation To Risk Of
Strokes
Blood pressure is the single most important modifiable factor
in the prevention of strokes.
Risk of stroke increases
directly in line with increasing blood pressure, especially if a
person's blood
pressure systolic (top) reading is greater than 160mmhg and/or the
diastolic (bottom) reading is
greater than 90mmhg. Fortunately there is an abundance
of medication available aimed at successfully reducing blood pressure to
a more satisfactory
level of 140/80mmhg or lower.
Download Blood
Pressure Monitoring Form
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WH1TE COAT
HYPERTENSION
Extract From UPDATE
Ten to twenty per cent of `hypertensive'
patients have normal blood pressure when
it is measured out of a doctor's
presence.
White coat hypertension is common,. The
phenomenon, in which blood pressure is only raised in the presence
of a doctor, has been known about for the past decade.
What is white coat hypertension?
Patients with white coat
hypertension only have high blood pressure (BP) in the consulting room.
This is different from the `alarm' or `defence' reaction, which is a
normal response to blood pressure
measurement and is experienced by most people (both normotensive and
hypertensive). The crucial
difference is that rises in blood pressure due to alarm or stress
regress to the mean whereas White Coat
Hypertension persists.
White Coat Hypertension was first described in 1988 and was
reported in the British literature in the same
year. The British Hypertension
Society's 1993 Guidelines only mentioned it in the context of ambulatory
blood pressure monitoring as this
was the only reliable means of diagnosing it at the time. Ambulatory
monitoring was then only available
in specialist centres.
Some 10-20% of patients diagnosed as hypertensive
are thought to have white coat hypertension, but
the incidence varies according to
the definition of white coat hypertension, and the definition and
prevalence
of hypertension in the community concerned.
How can white coat
hypertension be diagnosed?
White coat hypertension can only be diagnosed by taking a series of
blood
pressure measurements outside the consulting room, either by continuous
ambulatory monitoring or by
home blood pressure
recording.
HOME BP MONITORING
Patients who measure their blood pressure at home usually use a
digital, semi-automatic device. These
devices are simple battery-driven instruments with an electric pump and
digital readout, and are universally
used in hospitals. There are a
large number of models and some are much less reliable than others.' Some
of
the better devices have been
established to be accurate enough for use in primary care, where their
most
important role is diagnosing white coat hypertension.
Patients take the unit home and are
instructed to take several readings a day for up to a week.
The average systolic and diastolic
blood pressure measurements are then calculated.
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