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- $Unique_ID{BRK00646}
- $Pretitle{}
- $Title{How Accurate Are Home Blood Pressure Monitoring Devices?}
- $Subject{blood pressure monitoring Circulatory hypertensive stethoscope
- sphygmomanometer special procedure procedures artery arteries}
- $Volume{P-4}
- $Log{}
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- Copyright (c) 1991-92,1993 Tribune Media Services, Inc.
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- How Accurate Are Home Blood Pressure Monitoring Devices?
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- QUESTION: I am considering purchasing the equipment to measure the blood
- pressure of my husband, who has a mild hypertensive condition, and have
- noticed a number of different devices in the local pharmacy. How accurate are
- they, and how can you be sure of getting accurate results when using a home
- monitoring device?
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- ANSWER: That is a fine idea, for it can help greatly in helping your husband
- deal with his condition. Home blood pressure monitoring devices give
- hypertensive patients an immediate idea of how well they are doing with their
- medication program. They also help the patient's doctor by making creating a
- record of daily readings so that he can evaluate, in an ongoing fashion, the
- progress of the patient.
- Three different types of instruments are currently available for home
- use. All three are packaged in kits that contain a blood pressure cuff, and,
- if necessary, a stethoscope.
- The first of these devices, the mercury sphygmomanometer, is calibrated
- by the manufacturer so that the top of the mercury column stands precisely at
- zero when the cuff is deflated. This device is considered the most accurate
- and reliable of the three. If the mercury column is soiled or does not rest
- at zero, the instrument should be returned to the manufacturer for
- recalibration.
- Nonelectronic aneroid manometers cost less and are accurate if properly
- calibrated. They should be calibrated once every year against a standard
- mercury sphygmomanometer.
- The newest choice for home blood pressure monitoring is one of the many
- electronic devices that provide a digital readout and do not require a
- stethoscope. Some are fully automated so that the push of a button inflates
- and deflates the cuff. These are particularly useful for persons with hearing
- deficiencies or those anxious about the to use of a stethoscope, or even just
- for those who wish to have an instrument that is easy to use.
- Moving the arm, failing batteries or incorrect placement of the cuff can
- cause erratic measurement, so before an unusual result leads you to assume the
- worst, be sure to test your pressure a second time. False readings may also
- result from an ill-fitting cuff, so choose the right size if you are given a
- choice. Also, a noisy environment may cause a high reading. Recordings more
- than once or twice a month are generally unnecessary for hypertensive
- patients, who should expect some normal daily fluctuations in pressure.
- However it does make sense to check the pressure under the same conditions
- each time, so that comparisons are valid. Pick a time of the day when stress
- is at a minimum to obtain a good base line reading.
- There is one additional benefit from using these devices which isn't
- always written about. Just using the instrument reminds patients that they
- should be taking their medication on a regular basis, even when they are
- feeling fine, for that's the best way to keep those readings down!
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- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
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