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Measurement of Hemodynamic Responses to Lower Body Negative Pressure — LBNP  

Hypotension and Shock Clinical Trial

Official title:
Physiology of the Early Stage of Hemorrhage and Early Identification of Progression Toward Hemodynamic Instability in Humans for Validation of Current Machine Learning Models

Clinical Trial Summary

This study will be collecting data on participants undergoing lower body negative pressure (LBNP) to simulate progressive blood loss. The goal of the study is to collect data to allow for development of an algorithm with machine learning to predict blood pressure responses to hypovolemia by analyzing the arterial waveforms collected during LBNP.

Clinical Trial Description

Death from exsanguination continues to be a major problem in combat casualty care and the care of civilians subjected to trauma. The ability to detect significant blood loss using traditional vital signs (heart rate, blood pressure) is marginal due to a variety of compensatory mechanisms that maintain blood pressure in the face of marked reductions in circulating blood volume. Along these lines, it is critical to develop monitoring devices and algorithms to non-invasively assess central blood volume in humans for the purposes of facilitating more timely interventions. The standard way to simulate hemorrhage in humans is to use Lower Body Negative Pressure (LBNP). In this technique, the lower body of a supine volunteer is enclosed in an airtight container while suction is applied to cause venous pooling in the legs and reduce central blood volume. This technique generates many physiological adaptations that are similar to that observed during blood loss studies in animals and human volunteers. Thus, the purpose of this study is to obtain data for use in developing monitoring technology to detect hemorrhage and other surrogate markers of central blood volume in humans. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT03582501
Study type Interventional
Source Mayo Clinic
Contact
Status Completed
Phase N/A
Start date January 8, 2019
Completion date May 23, 2019
View Details
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