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Measurement Accuracy of a Stand-Alone Oscillometric Central Blood Pressure Monitor: A Validation Report for Microlife WatchBP Office Central

Cheng HM, Sung SH, Shih YT et al. Measurement accuracy of a stand-alone oscillometric central blood pressure monitor: a validation report for Microlife WatchBP Office Central. Am J Hypertens 2013; 26: 42-50

WatchBP Office Central

Background

The superiority of prognostic value of blood pressure (BP) measured at central aorta (CBP) over conventional brachial BP measured by cuff-based BP monitors has reignited the development of new noninvasive techniques for estimating CBP. The present study validated the accuracy of CBP measured by a newly developed stand-alone CBP monitor.

Results

The mean differences of cuff BP with reference to the invasively measured central SBP, PP, and DBP were −2.6 ± 9.0, −8.6 ± 11.2, and 6.1 ± 7.0 mm Hg, respectively, with the former two being obviously underestimated at high CBP and overestimated at low CBP. In contrast, the corresponding differences for the central SBP, PP, and DBP measured by the CBP monitor were −0.6 ± 5.5, −0.4 ± 7.0, and −0.2 ± 6.5 mm Hg, respectively, without obvious systematic bias. The distribution of measurement errors for central SBP, PP, and DBP surpassed the AAMI criteria.

Conclusions

Central SBP, PP, and DBP can be measured accurately by a stand-alone automatic BP monitor.

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WatchBP Office Central

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