[Basic study on blood pressure measurements with a digital sphygmomanometers]

In the present study, digital sphygmomanometer (SMmeter)(Omuron Digital 709 Fuzzy and Digital 806F)for family use and 24 hour ambulatory SMmeter were checked in terms of reproducibility (CV%) of blood pressure(BP) measured and comparison of measured BP with Digital SMmeter with those measured with mercury SMmeter, the golden standard. Reproducibility of BP measured with Hg-SMmeter was less than 4%, with each Digital SMmeter less than 9%. Inter-unit reproducibility was less than 5% in each SMmeter. Systolic BP measured with 24 hour ambulatory SMmeter were higher by 2-4% than BP measured with Hg-SMmeter, diastolic BP higher by 4-9%. Systolic BP measured with Digital 709 Fuzzy were higher by 5-10% than Hg-SMmeter in lower range of systolic BP to be actually measured, in 130-170 mmHg both values almost coincident, in more than 170 mmHg Digital 709 Fuzzy lower by 2-7%. Diastolic BP measured with Digital 709 Fuzzy were higher by 10-15% than Hg-SMmeter in lower range of diastolic BP to be actually measured. In more than 80 mmHg both values were almost coincident. Systolic BP with Digital 806F were higher by 1.5-7%, diastolic BP higher by about 10% than the value with Hg-SMmeter. In conclusion, by taking account of different reproducibilities and characteristics of SMmeter, home BP monitoring can be performed by patient or/and his family.