Long Time Interval Analysis for Non Invasive Measurement of Cardiac Output

Status unconfirmed · Not applicable

Conditions studied: Hypotension

In brief

A group of engineers at Michigan State developed a novel waveform analysis technique ("Long Time Interval Analysis" \[LTIA\]) that attempts to estimate cardiac output non-invasively. Retrospective comparison of LTIA to invasive techniques (e.g. thermodilution) suggest acceptable agreement. Thus, a prospective trial of LTIA is warranted. This study compares LTIA to a validated measure of cardiac output - esophageal Doppler monitoring.

Key facts

Study ID

NCT02473588

Run by

University of Virginia

People needed

60

Starts

2015-06-01

Expected to finish

2015-12-01

Last updated by the study team

2015-06-16

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Adult (18 years or older)
• Undergoing hepatobiliary surgery (open or laparoscopic) requiring general anesthesia as part of the patient's clinical care
• Attending anesthesiologist plans to place an intra-arterial catheter for routine care
• Attending anesthesiologist believes that non-invasive cardiac output monitoring would benefit the patient

You may not qualify if…

• Minors (17 years or younger)
• Parturient (pregnant women)
• Cognitively impaired
• Unable to sign informed consent form
• Prisoner
• Prior esophageal surgery
• Moderate to severe aortic regurgitation
• Mechanical cardiac support (e.g., intra-aortic balloon pump)
• Severe, persistent arrhythmias

Where it is running

• University of Virginia Health System — Charlottesville, Virginia, United States (enrolling)

Full record on ClinicalTrials.gov

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