Reliability of PVI Changes During Tidal Volume Challenge in ICU Patients

November 22, 2022 updated by: Xavier Monnet, Bicetre Hospital

Assessment of the Reliability of Changes in Plethysmography Variability Index During Tidal Volume Challenge for Predicting Fluid Responsiveness in Intensive Care Unit Patients

The aim of this study is to assess whether changes in the plethysmography variability index, during a tidal volume challenge, can reliably detect simultaneous changes in arterial blood pressure pulsatility, in patients hospitalized in intensive care unit. If results will be positive, this will allow the test to be performed even in the absence of an invasive arterial catheter.

Study Overview

Status

Recruiting

Detailed Description

Among patients in a state of shock one of the first treatments is volume expansion, consisting in a fast intravenous injection of crystalloid or colloid solutions in order to increase cardiac preload and consequently cardiac output. However, this augmentation of the cardiac output happens only in half of the patients.To avoid ineffective fluid administration several tests have been developed.

One of these tests is called the "tidal volume challenge" (TVC). It consists of transiently increasing for 1 minute the volume of air inhaled with each breath, in mechanically ventilated patients, and then evaluating whether this change impacts the pulsatility of the arterial blood pressure, detected by an arterial catheter. This test seems reliable, but it requires an arterial catheter to be in place.

It has been suggested in previous studies that pulsatility of blood pressure can be estimated by the pulsatility of the plethysmography signal ("plethysmography variability index"), obtained from the oxygen saturation signal that's measured in all intensive care patients. The advantage is that this measurement only requires a sensor placed at the end of a finger, on the earlobe or on the forehead.

The aim of the study is to assess whether changes in the plethysmography variability index (PVI) during a TVC can reliably detect simultaneous changes in blood pressure pulsatility. This study will include patients hospitalized in intensive care unit, mechanically ventilated, in whom physicians have decided to perform a TVC as common practice. Changes, occurred during this test, in arterial blood pressure pulsatility and in plethysmography pulsatility index will be measured and compared. If results will show that changes in PVI during TVC are reliable for measuring blood pressure pulsatility changes during this test, this will allow the test to be used even in the absence of an arterial catheter.

Study Type

Observational

Enrollment (Anticipated)

44

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

      • Le Kremlin-Bicêtre, France, 94270
        • Recruiting
        • Service de médecine intensive-réanimation, Hôpital de Bicêtre
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patients hospitalized in intensive care unit, mechanically ventilated with a tidal volume of 6 ml/kg on ideal body weight, with oxygen saturation monitoring with Masimo SET and cardiac output monitoring with PICCO2 system in place.

Description

Inclusion Criteria:

  • patients hospitalized in intensive care unit
  • physicians' decision to perform a tidal volume challenge
  • hemodynamic monitoring with a calibrated pulse contour analysis device (PICCO2) in place
  • monitoring of oxygen saturation with Masimo SET
  • mechanical ventilation with tidal volume of 6 ml/kg on ideal body weight

Exclusion Criteria:

  • thoracic drainage
  • patient under judicial protection

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Reliability of PVI changes in diagnosing preload responsiveness during TVC
Time Frame: TVC is performed in 1 minute
The primary objective is to assess the reliability of PVI changes induced by a tidal volume challenge test in diagnosing a preload responsiveness state in adult ICU patients.
TVC is performed in 1 minute

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Reliability of PVI absolute values to diagnose preload responsiveness
Time Frame: TVC is performed in 1 minute
Secondary objective is to test the reliability of absolute values of PVI to diagnose a preload responsiveness state in adult intensive care patients.
TVC is performed in 1 minute
Evaluation of PVI changes during TVC according to sensor position
Time Frame: TVC is performed in 1 minute
Third objective is to compare the value of changes in PVI induced by a tidal volume challenge test to diagnose a preload responsiveness state according to the location of the plethysmographic measurement (finger, earlobe, forehead).
TVC is performed in 1 minute
Comparison of PPV and PVI changes during PLR test or volume expansion
Time Frame: PLR is performed in 1 minute
Forth objective is to compare the changes in pulse pressure variation (PPV) and PVI during a passive leg raising test (PLR) and a volume expansion, if applicable.
PLR is performed in 1 minute

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Principal Investigator: Xavier Monnet, MD-PhD, Hopital de Bicetre

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

June 6, 2022

Primary Completion (ANTICIPATED)

November 1, 2022

Study Completion (ANTICIPATED)

November 1, 2022

Study Registration Dates

First Submitted

June 17, 2022

First Submitted That Met QC Criteria

June 17, 2022

First Posted (ACTUAL)

June 23, 2022

Study Record Updates

Last Update Posted (ACTUAL)

November 23, 2022

Last Update Submitted That Met QC Criteria

November 22, 2022

Last Verified

November 1, 2022

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • IDRCB:2022-A01253-40

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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