A novel hands-free ultrasound patch has been developed for continuous monitoring of quantitative Doppler in the carotid artery. This innovation aims to provide a convenient and accurate method for tracking blood flow metrics in real-time, particularly in critical care settings where rapid hemodynamic assessment is crucial.
Quantitative Doppler ultrasound of the carotid artery serves as an instantaneous surrogate for monitoring changes in left ventricular output, especially in situations like circulatory shock where immediate interventions are needed. The ability to track changes in arterial Doppler spectrogram can be invaluable in acute care environments such as emergency departments and critical care units.
The hands-free continuous-wave Doppler ultrasound patch is designed to adhere to the neck, allowing for automated tracking of Doppler blood flow metrics in the common carotid artery. This technology has been tested using string and blood-mimicking test objects to ensure accurate measurement of velocity changes, both manually and automatically.
A usability study involving 22 volunteer users, including clinical professionals and lay individuals, demonstrated the ease of use of the Doppler ultrasound patch. All users were able to locate the carotid Doppler signal on a volunteer subject and found the device easy to use, highlighting its potential for broad application.
By continuously recording Doppler spectrograms over multiple cardiac and respiratory cycles, the wearable carotid Doppler patch offers promise for various clinical applications. Its ease of use, accuracy in velocity measurement, and ability to track Doppler metrics continuously make it a valuable tool for functional hemodynamic monitoring in critical care scenarios.
The patch’s design features a broad ultrasound beam to facilitate easy placement over the artery, ensuring uniform insonation. This hands-free approach minimizes errors in velocity measurement introduced by manual positioning, providing clinicians with reliable and consistent data for assessing changes in stroke volume and cardiac output.
In conclusion, the hands-free continuous-wave Doppler ultrasound patch represents a significant advancement in hemodynamic monitoring technology. Its ability to accurately measure blood flow velocities in real-time, coupled with its user-friendly design, makes it a valuable tool for functional hemodynamic monitoring in various clinical settings.
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