EN
20
WatchBP Office Central
Special Functions
Central blood pressure
Central blood pressure is the pressure in the ascending
aorta, the largest artery that originates from the left
ventricular of the heart and from where oxygen is
distributed to all parts of the body through the systemic
circulation.
How is central blood pressure measured?
The WatchBP Office Central uses brachial pulse volume
plethysmography (PVP) waveforms
1
to determine central
blood pressure. The WatchBP Office Central is designed
to perform PVP at a cuff pressure of 60 mmHg. Based on
the analysis of PVP waveforms the central systolic blood
pressure (CBP) value and the central pulse pressure value
(CPP) are determined
1
.
Accuracy of the WatchBP Office Central
The accuracy of central blood pressure measurement
performed with an automated oscillometric device can only
reliably be determined against intra-arterial blood pressure
measurement. The WatchBP Office Central has been validated
against simultaneous recorded intra-arterial blood pressure
measurement in 85 subjects and showed high accuracy
2
.
Central Pulse Pressure (CPP)
Central Pulse Pressure by this monitor is estimated directly
through pulse volume plethysmography (PVP) waveform
analysis.
1. Sung, S.H.,
et al.,
Measurement of central systolic blood pressure by pulse
volume plethysmography with a noninvasive blood pressure monitor. Am J
Hypertens, 2012. 25: 542-8.
2. Cheng, H.M.,
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.
