Scientists create graphene tattoo that monitors blood pressure
An article published in Segunda-Feira (20), in a scientific journal Nature Nanotechnology, presents a comfortable and accurate solution for continuous blood pressure measurements in non-clinical (ambulatory) environments. Developed by researchers from the University of Texas at Austin, in the United States, It is an electronic graphene tattoowhich can remain pulseless for hours.
Continuous monitoring of blood pressure is an essential procedure for understanding various health conditions, mainly cardiovascular diseases. This measure can not only provide subsidies for medical diagnosis, but also allow monitoring platforms to establish a correlation of care with patient behavior and habits.
The importance of monitoring blood pressure
For Deji Akinwande, a professor at UT Austin and one of two research leaders, “Blood pressure is the most important vital sign that you can measure, but the methods to face it outside the clinic, passively, without sleeve, are very limited”. For this reason, the study proposes a monitoring through a wearable device, based on electrical bioimpedance.
Called e-tattoo, the graphene “tattoo” is thin, self-adhesive, light and discreet, functioning as a human bioelectronic interface. Through it, blood pressure monitoring can be done in any type of situation, from moments of high stress to I am deep. Although measured in a non-invasive and precise way (performance equivalent to Grade A), or wearable it can be worn for more than 300 minutes, ten times more than reported in previous studies.
The measurements were made through the triggering of an electrical current in the skin, followed by an analysis of the response of the body (bioimpedance). There is a correlation between this reaction and changes in blood pressure, due to changes in blood volume, which are subsequently analyzed by a machine learning model.
ARTICLE Nature Nanotechnology- TWO: 10.1038/s41565-022-01145-w.