Acute changes in metabolic parameters after bolus fluid treatment in critically ill patients

ISRCTN ISRCTN31590683
DOI https://doi.org/10.1186/ISRCTN31590683
Secondary identifying numbers 1171980
Submission date
27/06/2016
Registration date
30/06/2016
Last edited
30/06/2016
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Haematological Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data
Record updated in last year

Plain English summary of protocol

Background and study aims
Seriously ill patients in an intensive care ward often need to have fluid therapy as part of their treatment. This is especially the case for patients who have lost blood or fluids and so do not have enough blood circling around their body (hypovolemia). Hypovolemia is seriously detrimental for patients, as it is accompanied by low cardiac output (volume of blood being pumped by the heart) and insufficient delivery of oxygen to the body's tissues. It is widely acknowledged that IV fluid administration (giving fluids through a drip) should be closely monitored in order to avoid hypovolemia or hypervolemia (fluid overload, often a consequence of treating hypovolemia incorrectly). Assessing changes in cardia output after giving fluids is a reliable method of evaluating patient's response to treatment, however this may not show the long-term consequences. The aim of this study is to investigate the effects of bolus fluid treatment ( of a single, large amount of fluid through a drip) on oxygen delivery to bodily tissues.

Who can participate?
Adults with suspected hypovolemia who are being treated in ICU at CHU-Brugmann (Belgium).

What does the study involve?
For all patients, before they receive the fluid bolus (single delivery of a large amount of fluid), samples of blood from veins and arteries are taken so that the amount of oxygen present canbe measured. The results are then used to calculate the amount of oxygen being delivered to the different tissues in the body and how the tissues are using the oxygen. At the same times, a scan of the heart is performed with a special ultrasound probe to measure cardiac output.

What are the possible benefits and risks of participating?
There are no direct benefits or risks involved with participating in this study.

Where is the study run from?
CHU-Brugmann (Belgium)

When is the study starting and how long is it expected to run for?
October 2014 to March 2016

Who is funding the study?
CHU-Brugmann (Belgium)

Who is the main contact?
Dr Charalampos Pierrakos

Contact information

Dr Charalampos Pierrakos
Scientific

CHU-Brugmann
Place Van Gehuchten 4
Brussels
1020
Belgium

ORCiD logoORCID ID 0000-0003-2920-8350
Phone +32 2477 9126
Email charalampos.pierrakos@chu-brugmann.be

Study information

Study designObservational cross sectional single-center study
Primary study designObservational
Secondary study designCross sectional study
Study setting(s)Hospital
Study typeOther
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleEvaluating the changes of cardiac output, oxygen and CO2 derived variables and lactate before and after bolus fluid treatment in critically ill patients with suspected hypovolemia
Study objectivesMetabolic parameters’ changes may be used in the assessment of bolus fluid treatment (BFT) response in clinical practice.
Ethics approval(s)CHU-Brugmann’s Ethical Committee, 14/01/2015, ref: CE2014/122
Health condition(s) or problem(s) studiedCritically ill patients with suspected hypovolemia
InterventionPatients are included in the study if they needed to receive intravenous fluids consisting of 500 ml of colloids or 1000 ml of crystalloids within 30–50 minutes. The decision to administer bolus fluids is made by the attending physician.

Cardiac index (CI) is measured by using doppler echocardiography or thermodilution (PiCCO®, EV1000®, Swan-Ganz®) just prior to the start of BFT. Arterial and central venous blood sampling and analysis are simultaneously conducted. No interventions are allowed after the start of fluid administration. At the end of fluid administration, the CI measurement and arterial and central venous blood sampling are repeated.
Intervention typeProcedure/Surgery
Primary outcome measure1. Oxygen consumption (VO2) is calculated using the formula arterial oxygen content-Venous oxygen content before and after bolus fluid treatment
2. Oxygen delivery (DO2) is calculated using the formula 10*CI* arterial oxygen content before and after bolus fluid treatment
Secondary outcome measuresNo secondary outcome measures
Overall study start date01/10/2014
Completion date30/03/2016

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participants100
Key inclusion criteria1. Patient treated in ICU
2. Suspicion of hypovolemia that must be treated
3. Available central venous and arterial catheter
4. Available method for cardiac output measurment (thermodilution, doppler)
Key exclusion criteria1. Aged under 18 year
2. No jugular or subclavian venous catheter and arterial catheter
3. Individuals on whom it is not possible to measure cardiac output
4. Patients receiving extracorporeal membrane oxygenation (ECMO) support
5. Receipt of interventions (i.e. introduction or increase in the dose of inotropes, changes or introduction of mechanical ventilation) within 30 minutes prior to fluid administration
Date of first enrolment15/01/2015
Date of final enrolment31/07/2015

Locations

Countries of recruitment

  • Belgium

Study participating centre

CHU-Brugmann
Place Van Gehuchten 4
Brussels
1020
Belgium

Sponsor information

CHU-Brugmann
Hospital/treatment centre

Place Van Gehuchten 4
Brussels
1020
Belgium

ROR logo "ROR" https://ror.org/011apjk30

Funders

Funder type

Hospital/treatment centre

CHU-Brugmann

No information available

Results and Publications

Intention to publish date31/12/2016
Individual participant data (IPD) Intention to shareYes
IPD sharing plan summaryAvailable on request
Publication and dissemination planPlanned publication in a high-impact peer reviewed journal.
IPD sharing plan