The assessment of agreement between non-invasive, near continuous radial blood pressure measurement and conventional ambulatory blood pressure monitoring during night time sleep

Abstract The objective of this study was to ,compare ,the blood pressure (BP) measurements ,during night time sleep of a non-invasive, near-continuous, radial BP instrument to a conventional ambulatory blood pressure monitoring (ABPM) device in a field study setting, in which individuals were not controlled for moving. In order to assess ,the validity of the ,radial BP meter in a field setting, we carried out a study in which subjects slept with both instruments: the ambulatory BP monitoring device (Numed’sMobil-O-Graph®) and the non-invasive, near continuous,radial meter (Medwave’s APM205A Vasotrac®). They were ,positioned on 7 healthy subjects, 2 males and 5 females, aged from 14 to 83, who volunteered to take part in the study. It was found that under the normal field conditions the agreement of the Vasotrac® monitor to the ambulatory,Mobil-O-Graph® was relatively small. The range of the observed