Evaluating fluid responsiveness in ICU patients with acute respiratory failure

Pronostic Value of Fluid Responsiveness, Evaluated by Inferior Vena Cava Collapsibility Index, in Patients Admitted in ICU With Acute Respiratory Failure '' PRIVACY Study''

Observational University Hospital, Lille · NCT06286306

This study is testing if measuring a specific part of the heart's blood flow can help doctors decide how much fluid to give ICU patients with breathing problems to avoid complications.

Quick facts

Study typeObservational
Enrollment50 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity Hospital, Lille Academic / other
Locations1 site (Lille)
Trial IDNCT06286306 on ClinicalTrials.gov

What this trial studies

This observational study aims to assess the prognostic value of the inferior vena cava collapsibility index (cIVC) in patients admitted to the ICU with acute respiratory failure. By recording video loops of the inferior vena cava during transthoracic echocardiography, the study will measure the cIVC to determine preload responsiveness in spontaneously breathing patients. The findings could help guide fluid management and reduce the risk of fluid overload and invasive mechanical ventilation. The study will analyze data from patients who meet specific inclusion criteria and will be conducted at a single hospital in Lille, France.

Who should consider this trial

Good fit: Ideal candidates include adults over 18 years old with hypoxemic acute respiratory failure requiring oxygen support and undergoing echocardiography.

Not a fit: Patients who are pregnant, have severe disabilities, or are in a moribund state may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could improve fluid management strategies in ICU patients, potentially reducing mortality rates associated with acute respiratory failure.

How similar studies have performed: Previous research has indicated the potential utility of the cIVC in assessing preload responsiveness, suggesting that this approach may be promising.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

Age \> 18 years Registered in the French National Health Insurance system

Presenting all the following criteria:

* Admission in ICU for less than 48 hours
* Type 1 acute respiratory failure: hypoxemia (PaO2\< 60 mmHg on room air) without hypercapnia (PaCO2 \< 45 mmHg)
* Requiring oxygen support of ≥ 5L./min
* Necessitating transthoracic echocardiography for diagnostic purposes

Exclusion Criteria:

Pregnancy Adult with disability or without social protection BMI \> 35 kg/m² Withhold decision regarding invasive mechanical ventilation Moribund state diagnosed as a SOFA score \> 20

Where this trial is running

Lille

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Hypoxemic Without Hypercapnia Acute Respiratory FailureFluid responsivenessspontaneously breathinginferior vena cavarespiratory failure
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.