Aktiia cuffless blood pressure monitor yields equivalent daytime blood pressure measurements compared to a 24-h ambulatory blood pressure monitor: Preliminary results from a prospective single-center study

In this preliminary study, daytime blood pressure (BP) measurements performed by a commercially available cuffless – and continual – BP monitor (Aktiia) generated equivalent data compared to a traditional 24-h ambulatory BP monitor (ABPM). The improved general usability of Aktiia over ABPM suggest Aktiia can safely replace ABPM for long-term BP monitoring.

Fig. 1. Illustration of Aktiia monitor. A Aktiia bracelet with embedded optical sensors. B Representation of the experiment setup with Aktiia bracelet on patient’s wrist (green) and the ABPM device (red). C Aktiia application displays BP measurements on a smartphone

Fig. 2. Scatter plots (upper) and Bland-Altman plots (bottom) comparing daytime BP measurements performed by Aktiia monitor (7-day average) and ABPM (1-day average). A. Comparison of daytime DBP. B. Comparison of daytime SBP. C. Comparison of daytime HR. Pearson’s correlation (R2) between the two modalities is shown on the bottom right of the scatter plots. ROI within ±10 mmHg and ±15 mmHg are highlighted in dark grey and light grey, respectively. The percentage of agreement for each region is shown on the bottom left of the Bland-Altman plots. The solid black line denotes the average mean of differences, while the dotted lines denote the limits of agreement (±1.96σ). BPM – beats per minute. The dark green dots represent first week sessions (35 sessions), and the light green dots represent last week sessions (15 sessions)