The Validity of Wrist Blood Pressure Measuring Device (HEM-6000) / 中华高血压杂志

18 years of age were enrolled. The blood pressure measurements at the wrist were compared with the results obtained by auscultatory measurement on left upper arm. Both measurements were taken 3 times in each person. A total 273 measurements were obtained in 91 participants. The evaluation of the accuracy was assessed by 2 statistical methods. (1)The differences between the 2 devices for a given measurement. (2) The differences between the 2 devices for a given person. Results Method 1 showed the sample mean errors and standard deviation of errors were 0.5?7.1 mm Hg for systolic blood pressure(SBP) and -1.6?6.1 mm Hg for diastolic blood pressure(DBP). Method 2 showed they were 0.5?6.1 mm Hg for SBP and -1.6?5.3 mm Hg for DBP. Blood pressure level and the wrist circumferences had no influence on the measurement errors. Conclusion The HEM-6000 wrist blood pressure device apparently met the AAMI criteria and is valid for patient self-measurement.

Accuracy of Automated Wrist Blood Pressure Meter

BACKGROUND: A reliable, well-validated home blood pressure(BP) self measurement device could have an important role in the management of hypertension. Rigorous assessment of such a device have not performed well, particularly in the hypertensive range. METHODS: We assessed the National EW274W device(oscillometric) for home messurem of BP according to the standards set out by the British Hypertension Society protocol and American Association for the Advancement of Medical Instrumentation(AAMI). The device was compared with sequential measurements using a standard mercury sphygmomanometer in the same arm in 105 patients aged 16-79 years. The BP of subjects was measured three times at least a week apart. These data were analysed using Pearson's correlation and paired t-test. RESULTS: The device was highly correlated to mercury sphygmomanometer in mean systolic BP(SBP) and mean diastolic BP(DBP) (r=0.93, r=0.93, P<0.05). The device was satisfactory over the whole BP range(SBP 106-182mmHg, DBP 56-116mmHg), with a B grade for SBP and a A grade for DBP(British Hypertension Society protocol) and a PASS for both SBP and DBP(AAMI). Sensitivity and specificity are 84.2%, 93.0%(mean SBP) and 100%, 96.9% (mean DBP). CONCLUSIONS: We concluded the wrist blood pressure meter(National EW274W) for home BP measurement is highly satisfactory and is suitable for clinical use.