A&D TM-2441, Инструкция по эксплуатации

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Proper cuff size
Use a cuff of adequate size. If it is too small or too big,
a measurement error occurs. Measurements with a cuff that is too
small tend to be evaluated as high blood pressure, regardless of the
proper blood pressure and normal arteries. Measurements with too
large a cuff tend to be evaluated as low blood pressure, especially
for those who suffer from severe arteriosclerosis or have abnormal
arterial valves. The wrong cuff size is a cause of differences between
the d
irect method and oscillometric measurement method. The cuff
has the range of the arm circumference shown on the label. Select
and attach the proper size cuff for each patient. The accuracy of the
blood pressure measurement is guaranteed by the pressure
accuracy of the pressure sensor, exhaust characteristics and
measurement algorithm, so long as the proper cuff and air hose
are used. Inspect the pressure accuracy of the pressure sensor
and exhaust characteristics periodically.