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Integrated Compensatory Responses in a Human Model of Hemorrhage

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Published on: November 20, 2016

Advanced technology development for remote triage applications in bleeding combat casualties.

Kathy L Ryan¹, Caroline A Rickards, Carmen Hinojosa-Laborde

¹US Army Institute of Surgical Research, Fort Sam Houston, TX, USA.

U.S. Army Medical Department Journal

|May 25, 2011

Summary

This summary is machine-generated.

New wearable physiological status monitors (PSMs) show promise for remote triage of combat injuries. Machine learning models using wearable data can distinguish physical activity from hypovolemia, improving battlefield readiness assessments.

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Area of Science:

Military Medicine
Biomedical Engineering
Physiological Monitoring

Background:

The Army requires "wear-and-forget" physiological status monitors (PSMs) for enhanced battlefield readiness and remote triage of injured soldiers.
Current PSM prototypes measuring electrocardiogram and respiration are insufficient for accurate combat injury triage.

Purpose of the Study:

To review the testing of remote triage system prototypes in laboratory and field settings.
To identify the need for a circulating blood volume status metric for effective remote triage.
To evaluate the potential of machine learning algorithms using wearable sensor data for triage.

Main Methods:

Testing of remote triage system prototypes in laboratory and field exercises.
Analysis of low-level physiological signals from wearable devices.
Application of machine-learning algorithms to physiological data.

Main Results:

Physiological data from electrocardiogram and respiration alone are inadequate for specific combat injury triage.
Machine learning models successfully modeled circulating blood volume status using wearable sensor data.
Algorithms can discriminate between physical activity and central hypovolemia.

Conclusions:

A metric for circulating blood volume status is essential for effective remote triage of combat injuries.
Machine learning applied to wearable physiological data shows significant promise for remote triage devices.
Wearable PSMs can enhance far-forward capabilities for assessing warrior readiness and managing injuries.