Pulse Pressure Variations as Index of Preload Dependency During Thoracic Surgery

May 12, 2016 updated by: University Hospital, Lille

Background: calculation of the pulse pressure variation (PPV) has repeatedly been shown to be a reliable predictor of fluid responsiveness in mechanically ventilated patients. But PPV measurement has not been yet validated in thoracic surgery during one-lung ventilation. The modifications of intrathoracic pressure induced by one-lung ventilation may altered the capabilities of PPV to predict fluid responsiveness.This study was designed to assess the ability of PPV predict fluid responsiveness during one-lung ventilation in thoracic surgery.

Methods: a prospective observational study. Thirty five patients undergoing a pulmonary resection (lobectomy or pneumonectomy) will be included to achieve around one hundred fluid challenges with a 250 milliliters colloid solution in response to hemodynamic instability.Hemodynamic instability is defined as a decrease by 20 % of artery pressure from baseline and/or an increase by 20% heart rate from baseline. Fluid responsiveness is defined as an increase in stroke volume index (SVI)>10% (measured with oesophageal doppler). PPV will be calculated from recorded artery pressure curve (PPVref) before and after each fluid challenge. An automated measurement of PPV proposed by the monitor Intelview (Philips) will be recorded simultaneously before and after each fluid challenge.

Statistical analysis: receiver operating characteristic curve will be used to assess the PPV capability to predict fluid responsiveness. Correlation analysis will be achieved using a Pearson test or Spearman's rho test when necessary. Continuous data will compared using a Student t test or a Mann-Whitney test when necessary.

Study Overview

Status

Completed

Conditions

Detailed Description

  • pulse pressure variation
  • preload dependency
  • one-lung ventilation
  • thoracic surgery

Study Type

Observational

Enrollment (Actual)

17

Contacts and Locations

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

Study Locations

  • France
      • Lille, France, 59000
        • Thoracic surgery department, University Hospital of Lille

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

All patients undergoing a thoracic surgery (lobectomy or pneumonectomy)and requiring hemodynamic monitoring (artery catheter, oesophageal doppler)in the thoracic surgery unit of the university hospital of Lille.

Description

Inclusion Criteria:

  • All patients undergoing a thoracic surgery (lobectomy, bilobectomy or pneumonectomy).
  • All patients requiring a hemodynamic monitoring (artery catheter, oesophageal doppler).

Exclusion Criteria:

  • Arrythmia.
  • Pregnant patient.
  • Patients less than 18 years old.
  • oesophageal or gastric pathologies precluding the use of oesophageal doppler.
  • pathologies precluding the use of artery catheter.

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Collaborators and Investigators

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

Sponsor

University Hospital, Lille

Investigators

  • Principal Investigator: Emmanuel ROBIN, MD PhD, Reanimation Department, University Hospital of Lille

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

October 1, 2008

Primary Completion (Actual)

June 1, 2009

Study Completion (Actual)

June 1, 2009

Study Registration Dates

First Submitted

April 4, 2011

First Submitted That Met QC Criteria

April 4, 2011

First Posted (Estimate)

April 5, 2011

Study Record Updates

Last Update Posted (Estimate)

May 13, 2016

Last Update Submitted That Met QC Criteria

May 12, 2016

Last Verified

May 1, 2016

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • 2008-A00302-53
  • PROM 2008/0812 (Other Identifier: Sponsor)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Undecided

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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