How accurate is automatic digital BP meter?
I have see quite a many digital BP meters in the market. I would like to have a simple one at home. I intend to know how accurate is the digital BP meter checked on the wrist. Is it reliable enough or does it have huge variation from the the digital once checked on the upper arms. Please suggest.
Digital BP monitors are only indicative. A person with significant BP problems should never rely on the results of a digital monitor. Moreover the posture while measuring BP with this one should be very accurate: a slight change in posture will alter the results significantly. Generally speaking if the measurement has been taken in correct posture, there is always an error of plus or minus 10mm of Hg. A sphygmomanometer or a mercury based BP monitor is the best method of measuring BP and that too if the instrument is properly calibrated. If still going with digital BP monitor always make sure that whenever it shows significantly lower or higher readings regularly, get yourself checked with a sphygmomanometer.
IEEE UCSD VU Meter (ARM Version)