Carotid artery velocity time integral and corrected flow time measured by a wearable Doppler ultrasound detect stroke volume rise from simulated hemorrhage to transfusion.
BMC Res Notes
; 15(1): 7, 2022 Jan 10.
Article
in En
| MEDLINE
| ID: mdl-35012624
ABSTRACT
OBJECTIVE:
Doppler ultrasonography of the common carotid artery is used to infer stroke volume change and a wearable Doppler ultrasound has been designed to improve this workflow. Previously, in a human model of hemorrhage and resuscitation comprising approximately 50,000 cardiac cycles, we found a strong, linear correlation between changing stroke volume, and measures from the carotid Doppler signal, however, optimal Doppler thresholds for detecting a 10% stroke volume change were not reported. In this Research Note, we present these thresholds, their sensitivities, specificities and areas under their receiver operator curves (AUROC).RESULTS:
Augmentation of carotid artery maximum velocity time integral and corrected flowtime by 18% and 4%, respectively, accurately captured 10% stroke volume rise. The sensitivity and specificity for these thresholds were identical at 89% and 100%. These data are similar to previous investigations in healthy volunteers monitored by the wearable ultrasound.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Carotid Arteries
/
Wearable Electronic Devices
Limits:
Humans
Language:
En
Journal:
BMC Res Notes
Year:
2022
Document type:
Article
Affiliation country: