The digital revolution is about to bring innovations to physiologic monitoring. Wearable sensors to continuously measure blood pressure and derived cardiovascular variables have the potential to revolutionize patient monitoring.
Current wearable methods analyzing time components (e.g., pulse transit time) still lack clinical accuracy, whereas existing technologies for direct blood pressure measurement are too bulky.
Here researchers present an innovative art of continuous noninvasive hemodynamic monitoring (CNAP2GO). It directly measures blood pressure by using a volume control technique and could be used for small wearable sensors integrated into a finger-ring.
As a software prototype, CNAP2GO showed excellent blood pressure measurement performance in comparison with invasive reference measurements in 46 patients having surgery.
The resulting pulsatile blood pressure signal carries information to derive cardiac output and other hemodynamic variables.
They show that CNAP2GO can self-calibrate and be miniaturized for wearable approaches. CNAP2GO potentially constitutes the breakthrough for wearable sensors for blood pressure and flow monitoring in both ambulatory and in-hospital clinical settings.
Published: 02 March 2021
source:
https://www.nature.com/articles/s41467-021-21271-8
https://doi.org/10.1038/s41467-021-21271-8
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