Fluid Challenge and Plasma Volume, During Surgery (FC-VE)

April 24, 2026 updated by: Joachim Zdolsek

Comparison of Albumin and Ringer's Solution for Optimization of the Plasma Volume and Hemodynamics During Laparoscopic Surgery.

A short bolus infusion of fluid, called "fluid challenge" is commonly recommended for fluid treatment during longer surgery. However a prolonged increase of the blood volume is a prerequisite to recommend the technique. The purpose with the study is to examine the plasma expanding effect of three different fluid challenge strategies (acetated Ringers 4 ml/kg body weight, albumin 5% 4 ml/kg body weight or albumin 20% 1 ml/kg body weight), using hemoglobin as a dilution indicator.

Study Overview

Detailed Description

60 patients scheduled for laparoscopic abdominal surgery, with a duration exceeding 90 minutes will be included in the study. These are randomized to three different groups (20 in each groups): The first group of patients will receive boluses of acetated Ringers 4 ml/kg body weight. The second albumin 4 ml/kg body weight and the third group albumin 20% 1 ml/kg body weight.

Hemoglobin, albumin and colloid osmotic pressure (COP) is sampled the day before surgery and in the morning directly prior to the anesthesia. Bioimpedance, urine osmolality and urine-creatinin are also measured. After induction of surgery a Cardio Q probe is inserted threw the nose into the esophagus, for circulatory measurements. Initial/baseline blood samples are taken after insufflation of carbon dioxide to the abdomen. Before every bolus of fluid and 5, (10), 15, 20, 30, 40, (50) and (60) minutes new blood samples are taken for determination of hemoglobin, albumin and COP. Artery blood gases are sampled 15 minutes after every infusion or depending on the clinical need.

Study Type

Interventional

Enrollment (Estimated)

60

Phase

  • Phase 4

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 Contact Backup

Study Locations

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 to 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Written consent to participate in the study
  • For women: relevant contraceptive, menopausal or a negative pregnancy test.
  • ASA category I to III
  • Laparoscopic abdominal surgery, with a duration of at least 90 minutes.
  • 18 to 85 years

Exclusion Criteria:

  • Patients with known cardiac failure
  • <18 or >85 years
  • known allergy to albumin
  • extracellular hyperhydration or hypervolemia
  • kidney failure
  • pregnancy or planned pregnancy

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

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: acetated Ringers
The circulatory effect of a bolus infusion with 4 ml/kg body weight of acetated Ringers will be studied. If cardiac output increase with 10% a second bolus will be infused and further studied.
After insufflation of carbon dioxide during an abdominal laparoscopic procedure, the first fluid bolus is infused. Circulatory and volume effects are studied. If cardiac output increase a second bolus is infused and studied.
Other Names:
  • Ringer's acetate
  • ringer acetate
  • acetate Ringer´s
Experimental: albumin 5%
The circulatory effect of a bolus infusion with 4 ml/kg body weight of Albumin 5% will be studied. If cardiac output increases with 10% a second bolus will be infused and further studied.
After insufflation of carbon dioxide during an abdominal laparoscopic procedure, the first bolus of fluid is infused. Circulatory and volume effects are studied. If cardiac output increases a second bolus is infused and studied.
Other Names:
  • Human Albumin 5%
  • Albumin (Human) 5%
Experimental: albumin 20%
The circulatory effect of a bolus infusion with 1 ml/kg body weight of Albumin 20% will be studied. If cardiac output increase with 10% a second bolus will be infused and further studied.
After insufflation of carbon dioxide during an abdominal laparoscopic procedure, the first bolus of fluid is infused. Circulatory and volume effects are studied. If cardiac output increases a second bolus is infused and studied.
Other Names:
  • Human Albumin 20%
  • Albumin (Human) 20%

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Plasma volume expansion after a fluid bolus
Time Frame: 60 minutes after an intravenous fluid bolus
Plasma volume using hemoglobin as an indicator of dilution
60 minutes after an intravenous fluid bolus

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Fluid Balance
Time Frame: 18 to 24 hours
Calculations of fluid balance
18 to 24 hours
Stroke Volume
Time Frame: 60 minutes after an intravenous fluid bolus
Change in stroke volume, measured with Cardio Q (oesophageal Doppler monitoring (ODM))
60 minutes after an intravenous fluid bolus
Arterial Blood Pressure
Time Frame: 60 minutes after an intravenous fluid bolus
Mean Arterial Pressure, measured with an arterial line.
60 minutes after an intravenous fluid bolus
Heart Rate
Time Frame: 60 minutes after an intravenous fluid bolus
Heart rate, measured with ECG and pulseoximeter.
60 minutes after an intravenous fluid bolus
Bioimpedance
Time Frame: 18 to 24 hours
Bioimpedance measures, resistance and impedance converted to volume of body fluid compartments.
18 to 24 hours
Serum Creatinin
Time Frame: 18 to 24 hours
Serum Creatinin as a measure of kidney function
18 to 24 hours
arterial pH
Time Frame: 60 minutes after an intravenous fluid bolus
Influence of a fluid bolus on arterial blood gases
60 minutes after an intravenous fluid bolus
arterial Base Excess
Time Frame: 60 minutes after an intravenous fluid bolus
Influence of a fluid bolus on arterial blood gases
60 minutes after an intravenous fluid bolus
arterial serum sodium
Time Frame: 60 minutes after an intravenous fluid bolus
Influence of a fluid bolus on Sodium concentration
60 minutes after an intravenous fluid bolus
arterial serum chloride
Time Frame: 60 minutes after an intravenous fluid bolus
Influence of a fluid bolus on Chloride concentrations
60 minutes after an intravenous fluid bolus

Collaborators and Investigators

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

Sponsor

Investigators

  • Principal Investigator: Joachim Zdolsek, MD PhD, Department of Biomedical and Clinical Sciences, Linköping University, Linköping, Sweden

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)

October 23, 2023

Primary Completion (Estimated)

October 31, 2026

Study Completion (Estimated)

October 31, 2026

Study Registration Dates

First Submitted

January 15, 2023

First Submitted That Met QC Criteria

February 9, 2023

First Posted (Actual)

February 13, 2023

Study Record Updates

Last Update Posted (Actual)

April 30, 2026

Last Update Submitted That Met QC Criteria

April 24, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Individual de-identified results will be shared, when results are published.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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