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Blood Pressure Information
Blood Pressure is the pressure that flowing blood exerts on the
arteries. The heart contracts and relaxes, creating two levels of
blood pressure. SYSTOLIC pressure is the highest level of blood
pressure, it is the level of pressure when the heart contracts.
DIASTOLIC pressure is the lowest level of blood pressure, it is the
level of pressure when the heart relaxes.
Blood pressure values are measured in millimeters of mercury
(written as mmHg). For example, if your blood pressure is 126/76, the
systolic pressure is 126 mmHg, and the diastolic pressure is 76 mmHg.
High blood pressure, or hypertension, is a level of blood pressure
consistently above normal. Most doctors consider a "normal"
blood pressure reading for an adult to be 120/80, although it varies
according to the individual. Standards for assessment of high or low
blood pressure, without regard to age, have been established by the
World Health Organization. (Reference Material: Investigation into
Adult Diseases Report by the Ministry of Health and Social Security,
1971.)
Benefits of Home Blood Pressure Monitoring
When blood pressure is measured in a doctor's office or clinical
setting it may cause nervousness or stress in the patient which can
produce inaccurate, higher blood pressure rates. This is commonly
known as the "white coat" syndrome. Home measurement
reduces the effect outside factors might have on blood pressure
readings. Self-monitoring is a good way to keep track of your own
blood pressure, but it is also very helpful to your doctor. It
provides a comprehensive view of the blood pressure changes over a
period of time and can help in evaluating the possibility of
hypertension.
Guidelines for Home Monitoring
Relax - Before taking a measurement the user should remain
relatively still for 10-15 minutes and avoid exercise, eating,
drinking alcohol, smoking and other activities that might influence
blood pressure values.
Positioning - Any clothing or jewelry that will interfere
with cuff placement should be removed. The arm cuff should be wrapped
around the upper left arm so that the bottom of the cuff is 2-3 cm
above the elbow joint. The user should then place the left arm on a
table so that the arm cuff is level with the heart.
Repeated Measurements - Wait at least 10 minutes between
readings to allow blood flow to return to normal. Immediate repeated
measurements will cause engorgement of the arteries and an accurate
reading might not be obtained.
Remember - Blood pressure values vary constantly throughout
the day. For the most accurate readings, measurements should be made
regularly at the same time each day.
Remind - Keep track of your blood pressure values so you
can share this information with your doctor.
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