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CompletedNCT04914455THEFRACSUpdated Dec 23, 2025

Transhepatic Echography for Fluid Responsiveness After Cardiovascular Surgery

An observational study in Inferior Vena Cava Abnormality, Fluid Responsiveness and Fluid Overload, sponsored by University Hospital, Lille. Completed at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-12-23.

Sponsored by University Hospital, Lille · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
40
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 35 studies in Edema with a site in France — 6 open to participants now, 6 under way, none of them phase 3. Edema · France.

Enrollment
15th of 19
40 · median 60
Started
2020
with 2 others
Observational
19 of 35
4 open now
Registered
24th of 35
by date

Among the 35 studies in Edema with a site in France, this one is the 15th largest by enrollment of the 19 observational ones, is one of 3 that started in 2020, is one of 19 observational ones, and was the 24th registered.

By phase

35 studies; the count open now beside each. This study's row is marked.

Observationalthis study19 · 4 open
No phase10 · 2 open
Phase 35 · 0 open
Phase 21 · 0 open

By the year they started

First in 2000; this study’s year is marked. 3 started in 2020.

Size and results

Median enrollment 138 across the 16 interventional studies, 60 across the 19 observational. Of the 21 that completed or were terminated, 2 (10%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 35 studies in Edema with a site in France, or all of them as a file.
02

Study summary

Fluid expansion in critically ill patients following high risk surgery may induce fluid overload and worse outcome. Several tools have been developped to predict fluid responsiveness in such situation in order to avoid inappropriate fluid administration but with several limitations. Inferior vena cava (IVC) distensibility is one of those tools which has the advantage to be non-invasive, dynamic and safe, is usually measured by subcostal (SC)approach. In post surgical setting this acess is limited du to practical reasons (scar, dressing...), therefore a transhepatic (TH) approach is used but has not been validated as a fluid responsiveness prediction tool. The correlation between SC approach with the TH approach vary according to studies. Therefore the performances, the threshold identified for SC approach can not be translated to the TH approach. Further, fluid congestion status measured before IVC analyses, may be a useful confounder and safety endpoint for fluid responsiveness interpretation.

The primary objective of this study is therefore to study the performance of the IVC measured using TH approach (IVCth) in predicting of fluid responsiveness defined as an increased of 10% and over of stroke volume.

Secondary objectives intend to analyse the correlation between TH and SC approaches, to compared their performances for fluid responsiveness prediction, and to analyse the weight of venous congestion on fluid responsiveness prediction.

Read the detailed description

Inappropriate volume expansion in the critically ill patient may leads to an increase in fluid balance, fluid overload and worse outcome. This increase in fluid balance is associated with a poor prognosis in the ICU patients, especially after cardiac surgery and high risk surgery .

Generally, the primary objective of an adequate volume expansion is a significant increase in stroke volume called fluid responsiveness (> 10% of increase). This increase in cardiac output promotes tissue perfusion, thus avoiding the occurrence of organ dysfunction.

The identification of fluid responsiveness in these patients is thus a cardinal element of haemodynamic management in intensive care. Among the non-invasive tools to assess this fluid responsiveness, the assessment of the ventilatory or forced inspiration distensibility of the inferior vena cava (IVC) has been proposed with convincing results in several clinical studies. However with various diagnostic performances and threshold.

The measurement of the diameter of the IVC is classically performed via the subcostal (SC) or subxiphoid approach. However, this approach is not always easily accessible in intensive care patients, particularly after cardiovascular surgery or laparotomy, due to practical constraints (algic scars, dressings, prone position). The transhepatic approach (TH) is a technically feasible approach in such cases. However, it has little validation in the literature, particularly in its ability to predict response to volume expansion. knowing that the correlation between the SC approach with the TH approach varies according to studies, the performance and the threshold identified for SC approach can not be translated into that of the TH approach. Further, fluid congestion status measured before IVC analyses, may be a useful confounder and safety endpoint for fluid responsiveness interpretation.

03

Conditions studied

  • Inferior Vena Cava Abnormality
  • Fluid Responsiveness
  • Fluid Overload
  • Venous Congestion
  • Cardiovascular Surgery

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Keywords

  • Inferior vena cava distensibility
  • Transhepatic inferior vena cava distensibility
  • Ultrasound diagnoses
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Probability sample

Study population

Patients admitted to our intensive care unit following cardiac surgery or aortic surgery, under mechanical ventilation or not.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • High risk cardiovascular surgery patients admitted in ICU
  • With transhepatic IVC and stroke volume measurement feasible.

Exclusion criteria

Exclusion Criteria:

  • Righ ventricle failure
  • Significant tricuspid regurgitation
  • Tamponade
  • Severe hypoxemia
  • Age \<18 ans
  • No health care coverage
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
40 participants (actual)
Patient registry
No

Groups and cohorts

  • Fluid responsiveness groups (responders and non-responders)

    Fluid responsiveness is defined as an increase in stroke volume of 10% and more form baseline.

    Diagnostic Test: Echocardiography and transhepatic inferior vena cava assessment using ultrasound.

Interventions

  • Diagnostic testEchocardiography and transhepatic inferior vena cava assessment using ultrasound.

    For all participant : * Inferior vena cava diameter will be measure before and after fluid expansion 'which administration will be decided by a physician other that the investigator). * Stroke volume using primarily VTI in TTE or a cardiac output monitoring device (Swan ganz catheter (Edwards life science), EV 1000 (edwards life science), PiCCO(Getinge)) * Absence of significant pericardial effusion of hematoma Whenever possible: Subcostal measurement of IVC, ejection fraction, cardiac outcput, mitral E, A and E' waves, TAPSE, tricupid S' wave, Right ventricle fractional area change. venous congestion assesment : hepatic vein, portal vein and renal vein Doppler to define the VEXUS Score;

    Also known as: Venous congestion using ultrasound

06

What researchers measure

Primary outcomes

  1. Fluid responsiveness

    An increase in stroke volume of 10% and more, following fluid bolus of 250 to 500 ml of cristalloid or colloid.

    Time frame: Measurement performs before and after fluid bolus (during the 10 min following the end of fluid bolus).

Secondary outcomes

  1. Venous congestion

    Venous congestion is defined using the VEXUS Score after sub hepatic, portal and renal veins Doppler.

    Time frame: during the 15 minutes following the end of the fluid bolus

07

Study locations

1 site
  • Service d'Anesthésie-Réanimation CCV Hôpital Cardiologique Centre Hospitalier et Universitaire de Lille
    Lille, NORD 59000, France
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Dec 2020 to primary completion in Jun 2021, 5 months.

Of 76 non-industry observational studies under Edema, half reached primary completion within 21 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 39. This study's 5 months is below that.

Counting every sponsor, half of 85 studies reached it within 23 months; a quarter within 7 and three quarters within 47.

How these figures are worked out, and which studies are left out of them.

Registered
Jun 2, 2021
First posted
Jun 4, 2021
StartActual
Dec 8, 2020
Primary completionActual
Jun 4, 2021
CompletionActual
Jun 4, 2021
Last update
Dec 23, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 23, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT04914455
Responsible party
Sponsor
First posted
Jun 4, 2021
Start date
Dec 8, 2020
Primary completion
Jun 4, 2021
Completion
Jun 4, 2021
Last update
Dec 23, 2025

Study contacts

Mouhamed MOUSSA, MD
principal investigator · University Hospital, Lille

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Dec 2025. You cannot join it, but the record below documents what was studied.

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