Digital Blood Pressure Monitors

Digital Blood Pressure Monitors
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If you are considering buying a blood pressure monitor it is important that you make an informed purchase, it is worth investigating the quality and various types available before you buy a machine for home use.
If your doctor or other healthcare provider has told you to monitor your blood pressure at home, you'll need a sphygmomanometer . It's made up of a cuff, pressure registering system and stethoscope. Some devices contain all of these in one unit. There are three types: mercury, aneroid and automatic. Automatic devices usually work with batteries and have a digital readout. They may remember and even print out your readings.
Each of the three types has advantages and disadvantages:

Mercury sphygmomanometer: May be bulky to carry. A mercury spill could be hazardous. Must be kept upright on a flat surface during measurement; the gauge must be read at eye level for accuracy. May not work well for the hearing or visually impaired or for those unable to perform the hand movement needed to squeeze the bulb and inflate the cuff.
Aneroid: It's a fairly delicate and complicated mechanism. The only way to tell if the gauge is accurate is to check it against a mercury sphygmomanometer at least once a year and when dropped or bumped. It can be easily damaged without the user's knowledge and requires factory repair and readjustment. The gauge can be clumsy to position, and without a D-ring cuff can be difficult to apply by oneself. It may not work well for the hearing or visually impaired or for those unable to perform the hand movement needed to squeeze the bulb and inflate the cuff.
Automatic: Mechanism is complex, fragile, and sensitive. Device accuracy must be checked first by comparing to a mercury device, then during measurement on the user. The most accurate devices don't give accurate readings on certain individuals. Body movements may influence accuracy. It can be expensive; requires batteries and an AC adapter for large arm cuffs; may require factory repair and readjustment when faulty. Requires careful cuff placement and arm positioning for accurate operation, especially the wrist cuff model. Some models are designed for use on only the right or left arm. Large cuffs may be relatively expensive or difficult to obtain.

Take care as always!