Clinical Evidence

Fluid Management Makes a Difference

FloPatch and Carotid Doppler Validation

FloPatch detects moderate-to-severe central hypovolemia


In a human model of hemorrhage and resuscitation, measures from a wearable Doppler ultrasound patch correlated strongly with SV and identified moderate-to-severe central hypovolemia with excellent diagnostic accuracy.

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Mayo Clinic study quantifies cardiac cycles needed to detect hemodynamic change

Critical Care Explorations

In an analysis of 18,000 cardiac cycles, this study at the Mayo Clinic determined that at least 6 cardiac cycles should be averaged before and after an intervention to adequately use carotid artery flow as a functional hemodynamic measure.

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FloPatch Doppler correlates with stroke volume in a Mayo Clinic study of 50k beats

British Journal of Anaesthesia

Carotid Doppler ultrasonography was demonstrated to correlate with stroke volume in a human model of hypovolaemia and resuscitation in analysis of 48,570 cardiac cycles.

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Inferring the Frank–Starling Curve with FloPatch

Frontiers in Medical Technology

Simultaneous venous and arterial Doppler measurements were used to accurately infer the cardiac function curve.

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FloPatch quantitative Doppler ultrasound monitoring of carotid described in Nature

nature scientific reports

FloPatch Doppler device was found to be easy to use by both clinical and lay individuals, and to accurately measure changes in carotid flow.

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Feasibility of wireless wearable ultrasound patch in detecting decreased cardiac output

Military Medicine

A novel index from a wireless Doppler ultrasound patch may be more sensitive and specific for detecting decreased cardiac output than standard vital signs in healthy volunteers.

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