Accuracy of Aktiia’s cuffless blood pressure technology is revealed by a clinical trial in the ICU

Neuchâtel, November 1st, 2019 – Aktiia, a Swiss-US startup that develops optical blood pressure...

image: Monitoring System

Neuchâtel, November 1st, 2019Aktiia, a Swiss-US startup that develops optical blood pressure monitors at the wrist, has concluded the analysis of the data of a clinical trial comparing cuffless optical blood pressure measurements at the wrist against invasive references. The results have been published in the peer-reviewed journal Blood Pressure Monitoring, with the conclusion that Aktiia’s optical technology is capable of replacing more traditional methods of blood pressure measurement such as cuffs.

Since its incorporation in 2018, Aktiia has focused on the development of a library of algorithms for the continuous 24/7 monitoring of blood pressure. The Aktiia algorithms only require input signals acquired from off-the-shelf optical sensors at the wrist: the same sensors that are today used in wearable devices to measure heart rate. This technology is expected to be a key element for the deployment of cuffless devices for the 24/7 monitoring of blood pressure.

The idea of an algorithm for cuffless blood pressure monitoring that processes signals from optical sensors has been explored in the past. However, the performance of existing solutions has only been partially assessed, or has been tested in very controlled conditions against dubious reference measurements. Aktiia believes that the development and further deployment of cuffless blood pressure technologies requires thorough experimental investigations involving measurement of ground-truth blood pressure values, including invasive measurements. Intensive care units represent an ethical and compelling environment for such investigations.

In February 2019, Aktiia SA joined efforts with Dr. Cyril Pellaton and his team in the Hôpital Neuchâtelois, Neuchâtel, Switzerland, to initiate a clinical trial. After approval from Swissmedic and the local Ethical Committee, the investigators enrolled 30 critical patients elected for radial arterial catherization at the intensive care unit. After inclusion, the team recorded ground-truth blood pressure measurements at the radial artery simultaneously to optical signals acquired at the contralateral wrist by a prototype of the Aktiia wearable device. Further details of the investigation protocol have already been disclosed at, under the registration number NCT03837769.

Today, Dr. Pellaton and Aktiia SA announce the conclusion of the analysis of the compiled data and its publication in the peer-reviewed journal Blood Pressure Monitoring. The obtained results provide clear and compelling evidence on the reliability and accuracy of the OBPM technology compared to currently accepted methods of blood pressure measurement. This is a major milestone in the clinical activities of company, contributing toward the company’s mission to bring easy, painless blood pressure monitoring to daily life.

About Aktiia

Aktiia was founded in Switzerland in May 2018 out of a passion to create the best tool for diagnosis and treatment of hypertension. Aktiia’s founders, Mattia Bertschi (CEO) and Josep Solà (CTO), previously contributed to research and development at CSEM, a prestigious Swiss research institute. For 15 years they worked day in and day out to understand the language of our heart signals and decode key markers to gain better insight into blood pressure. They built an incredible team of 15 employees and founded Aktiia to turn their years of pioneering work into a useful tool for people around the globe.

Aktiia’s technology combines common optical sensors and proprietary clinically tested algorithms to measure blood pressure at the wrist. Validated through extensive trials in acute and low-acute settings, its accuracy has received worldwide acknowledgement, enabling Aktiia to proudly offer the most complete and user-friendly blood pressure companion to date. With one third of adults globally suffering from hypertension, this mission is more urgent than ever.

Sam Draper
November 1, 2019

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