According to the European Society of Hypertension International Protocol Revision 2010 for the Validation of Blood Pressure Measuring Devices in Adults, 33 patients have their blood pressure measured by two observers using parallel connected mercury sphygmomanometers, blinded from each other's result, and then by the supervisor using the tested device, NISSEI DM 3000. The measurements using the mercury sphygmomanometers are repeated 5 times and in between them, 4 measurements using the tested device take place. If the results of the comparison of these measurements according to the analysis required by the protocol, meet the required criteria, the device is regarded as Pass, otherwise as Fail.~In this study, instead of consecutive, simultaneous measurements of the two mercury sphygmomanometers and tha tested device will be taking place. This will be so to exclude any inaccuracy due to blood pressure variability and because the tested device has a controllable deflation rate and allows simultaneous measurements with the mercury sphygmomanometers. In addition, the investigators will be performing 6 set of measurements instead of 4.
Assessment of the accuracy of a Blood Pressure Measuring Device with a digital display-column, NISSEI DM 3000, according to an adaptation of the European Society of Hypertension International Protocol Revision 2010 for the Validation of Blood Pressure Measuring Devices in Adults.