Validation of the visocor HM40 wrist blood pressure measuring device according to the International Protocol

Accuracy of the visomat handy wrist blood pressure measuring device according to the International Protocol

The objective of this study is to determine the accuracy of the UEBE visomat handy device for blood pressure measurement in the wrist of patients tested according to the requirements of the International Protocol of the European Society of Hypertension (ESH). Device evaluation was done in 33 patients whose age and blood pressure were within the intervals required by the ESH protocol. Their mean±standard deviation age was 53.8±16.5 years (range 30-86 years), systolic blood pressure (SBP) was 143.5±20.2 mmHg (range 110-180 mmHg), diastolic blood pressure (DBP) was 87.4±12.9 mmHg (range 68-110 mmHg), arm circumference was 29.0±3.7 cm (range 21-38 cm), and wrist circumference was 17.3±1.5 cm (range 14.0-21.0 cm). During the measurements, which were taken in a sitting position, the patient's wrist was kept extended at the heart level putting a support under the forearm. In total, 45 measurements were available for analysis in the first phase of the validation process, and 99 measurements in the second phase. The visomat handy device passed all three phases of the ESH protocol for SBP and DBP. Mean blood pressure differences for the visomat handy monitor (device-observer) were -2.0±8.1 mmHg for SBP and -0.9±4.1 mmHg for DBP. These data show that the UEBE visomat handy wrist monitor met the requirements for validation by the International Protocol and can be recommended for clinical use in the adult population.

Validation of the Lloyds pharmacy BP11 oscillometric blood pressure monitor according to the international protocol of the European society of hypertension

BACKGROUND

The BP11 is currently one of the lowest-cost blood pressure (BP) monitors available in the UK and has sold approximately 1.5 million units since its launch in 2006. As access to home-use BP monitoring increases, it is important that such devices are validated so that consumers and clinicians can be confident of their accuracy.

METHODS

The device was validated using the European Society of Hypertension International Protocol. Data collection and analysis were carried out under the laboratory standard ISO17025. Adherence to the standard and protocol was audited on-site by the United Kingdom Accreditation Service. Nine sequential same-arm measurements were taken alternating between trained observers and the test device. Minor variations from the protocol are reported.

RESULTS

The device passed both phases of the European Society of Hypertension International Protocol. The mean (standard deviation) of the difference between the observers and the device measurements was -1.2 (6.4) mmHg for systolic and 2.1 (6.8) mmHg for diastolic pressures, respectively.

CONCLUSION

The BP11 BP monitor can be recommended for home and professional use in an adult population.