Wearable ultrasound and provocative hemodynamics: a view of the future

Abstract

In their feasibility study, they describe a small ultrasound transducer adhering over multiple tissues and organ systems, capable of acquiring 2-dimensional, brightness mode (B-mode) images in addition to pulsed wave and color flow Doppler. [...]on PLR, the jugular vein is observed to distend (i.e., augmented right atrial pressure), while the LVOT VTI does not rise (i.e., stroke volume is unchanged). [...]this patient who might have been mistakenly labeled as ‘fluid responsive’ or ‘fluid tolerant’ [11] based on signs of venous filling, is accurately determined to be ‘fluid unresponsive’ or ‘fluid intolerant’ following the provocative PLR maneuver. The ultrasound beam dimensions and properties were chosen specifically to favor simultaneous acquisition of Doppler spectra from the common carotid artery and internal jugular vein and not for anatomical flexibility, which can come at the cost of achieving an optimal signal.