A novel, hands-free ultrasound patch for continuous monitoring of quantitative Doppler in the carotid artery.
Sci Rep
; 11(1): 7780, 2021 04 08.
Article
in En
| MEDLINE
| ID: mdl-33833288
ABSTRACT
Quantitative Doppler ultrasound of the carotid artery has been proposed as an instantaneous surrogate for monitoring rapid changes in left ventricular output. Tracking immediate changes in the arterial Doppler spectrogram has value in acute care settings such as the emergency department, operating room and critical care units. We report a novel, hands-free, continuous-wave Doppler ultrasound patch that adheres to the neck and tracks Doppler blood flow metrics in the common carotid artery using an automated algorithm. String and blood-mimicking test objects demonstrated that changes in velocity were accurately measured using both manually and automatically traced Doppler velocity waveforms. In a small usability study with 22 volunteer users (17 clinical, 5 lay), all users were able to locate the carotid Doppler signal on a volunteer subject, and, in a subsequent survey, agreed that the device was easy to use. To illustrate potential clinical applications of the device, the Doppler ultrasound patch was used on a healthy volunteer undergoing a passive leg raise (PLR) as well as on a congestive heart failure patient at resting baseline. The wearable carotid Doppler patch holds promise because of its ease-of-use, velocity measurement accuracy, and ability to continuously record Doppler spectrograms over many cardiac and respiratory cycles.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carotid Arteries
/
Ultrasonography, Doppler
/
Point-of-Care Testing
/
Intensive Care Units
Type of study:
Diagnostic_studies
/
Evaluation_studies
Limits:
Adult
/
Aged80
/
Female
/
Humans
/
Male
Language:
En
Journal:
Sci Rep
Year:
2021
Document type:
Article
Affiliation country:
Canada