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Validation of the A&D UM-211 device for office blood pressure measurement according to the European Society of Hypertension International Protocol revision 2010

Fania, Claudio; Albertini, Federica; Palatini, Paolo

doi: 10.1097/MBP.0000000000000266
Devices and Technology

The aim of this study was to define the accuracy of UM-211, an automated oscillometric device for office use coupled to several cuffs for different arm sizes, according to the International Protocol of the European Society of Hypertension. The validation was performed in 33 individuals. Their mean age was 59.6±12.9 years, systolic blood pressure (BP) was 144.3±21.5 mmHg (range: 96–184 mmHg), diastolic BP was 86.8±18.5 mmHg (range: 48–124 mmHg), and arm circumference was 30.2±4.3 cm (range: 23–39 cm). Four sequential readings were taken by observers 1 and 2 using a double-headed stethoscope and a mercury sphygmomanometer, whereas three BP readings were taken by the supervisor using the test instrument. The differences between the readings provided by the device and the mean observer measurements were calculated. Therefore, each device measurement was compared with the previous and the next mean observer measurement. The validation results fulfilled all the 2010 European Society of Hypertension revision Protocol criteria for the general population and passed all validation grades. On average, the device overestimated systolic BP by 1.7±2.4 mmHg and diastolic BP by 1.7±2.5 mmHg. These data show that the UM-211 device coupled to several cuffs for different ranges of arm circumference met the requirements for validation according to the International Protocol and can be recommended for clinical use in the adult population. However, these results mainly apply to the use of the 22–32 and the 31–45 cm cuffs.

Department of Medicine, University of Padova, Padua, Italy

Correspondence to Paolo Palatini, MD, Department of Medicine, University of Padova, Via Giustiniani, 2, 35128 Padua, Italy Tel: +39 049 821 2278; fax: +39 049 875 4179; e-mail:

Received February 24, 2017

Received in revised form April 10, 2017

Accepted April 12, 2017

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