Bioelectrical Impedance Analysis for Perioperative Fluid Evaluation in Colorectal Cancer Surgery

July 8, 2026 updated by: Institute of Oncology Ljubljana

Usefulness of Bioelectrical Impedance Analysis for Perioperative Fluid Evaluation and Complication Prediction in Oncological Patients Undergoing Colorectal Surgery

This study evaluates the usefulness of bioelectrical impedance analysis (BIA) for perioperative fluid evaluation and prediction of postoperative complications in oncological patients undergoing colorectal surgery.

Bioelectrical impedance analysis is used to assess body fluid status and body composition before and after surgery. The study aims to determine whether perioperative BIA measurements may contribute to improved assessment of fluid balance and early identification of patients at increased risk of postoperative complications.

The study is conducted at the Institute of Oncology Ljubljana in patients undergoing colorectal surgery for oncological indications.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

Accurate perioperative fluid assessment is important in patients undergoing colorectal surgery, as both fluid overload and inadequate fluid replacement may contribute to postoperative complications and delayed recovery.

Bioelectrical impedance analysis (BIA) is a non-invasive diagnostic method that enables assessment of body composition and fluid status. In this study, BIA measurements are performed in oncological patients undergoing colorectal surgery in order to evaluate perioperative changes in body fluid compartments and to assess whether these measurements may help predict postoperative complications.

The study evaluates the relationship between perioperative BIA parameters and clinical outcomes after colorectal surgery. The aim is to assess whether BIA may be useful as an additional diagnostic method for perioperative fluid evaluation and early identification of patients at increased risk of complications.

The study is conducted at the Institute of Oncology Ljubljana. According to the latest annual report, patient enrollment has been completed.

Study Type

Interventional

Enrollment (Actual)

85

Phase

  • Not Applicable

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

  • Slovenia
      • Ljubljana, Slovenia, 1000
        • Institute of Oncology Ljubljana

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adult patients aged 18 years or older.
  • Patients with oncological disease undergoing colorectal surgery at the Institute of Oncology Ljubljana.
  • Ability to undergo bioelectrical impedance analysis (BIA) measurements.
  • Signed written informed consent.

Exclusion Criteria:

  • Patients younger than 18 years.
  • Patients unable to undergo BIA measurements.
  • Patients with conditions that, in the investigator's opinion, make participation in the study unsuitable.
  • Refusal to participate in the study.

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: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Bioelectrical Impedance Analysis
Oncological patients undergoing colorectal surgery undergo perioperative bioelectrical impedance analysis (BIA) measurements to assess body fluid status and body composition. BIA results are evaluated in relation to postoperative complications and perioperative clinical outcomes.
Diagnostic test: Bioelectrical Impedance Analysis
Bioelectrical impedance analysis (BIA) is performed perioperatively to assess body fluid status and body composition. BIA parameters are evaluated for their potential usefulness in perioperative fluid assessment and prediction of postoperative complications in oncological patients undergoing colorectal surgery.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of Participants With Postoperative Complications Within 30 Days After Colorectal Surgery
Time Frame: Up to 30 days after colorectal surgery.
Postoperative complications will be identified from routine clinical documentation after colorectal surgery. The unit of measure will be the percentage of participants with at least one postoperative complication within 30 days after colorectal surgery.
Up to 30 days after colorectal surgery.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change From Baseline in Total Body Water Assessed by Bioelectrical Impedance Analysis
Time Frame: From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Total body water will be measured using bioelectrical impedance analysis before and after colorectal surgery. The unit of measure will be liters. The outcome will be reported as the change from preoperative baseline in total body water.
From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Change From Baseline in Extracellular Water Assessed by Bioelectrical Impedance Analysis
Time Frame: From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Extracellular water will be measured using bioelectrical impedance analysis before and after colorectal surgery. The unit of measure will be liters. The outcome will be reported as the change from preoperative baseline in extracellular water.
From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Change From Baseline in Intracellular Water Assessed by Bioelectrical Impedance Analysis
Time Frame: From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Intracellular water will be measured using bioelectrical impedance analysis before and after colorectal surgery. The unit of measure will be liters. The outcome will be reported as the change from preoperative baseline in intracellular water.
From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Change From Baseline in Extracellular Water to Total Body Water Ratio Assessed by Bioelectrical Impedance Analysis
Time Frame: From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
The extracellular water to total body water ratio will be calculated from bioelectrical impedance analysis measurements obtained before and after colorectal surgery. The outcome will be reported as the change from preoperative baseline in the extracellular water to total body water ratio.
From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Change From Baseline in Fat-Free Mass Assessed by Bioelectrical Impedance Analysis
Time Frame: From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.
Fat-free mass will be measured using bioelectrical impedance analysis before and after colorectal surgery. The unit of measure will be kilograms. The outcome will be reported as the change from preoperative baseline in fat-free mass.
From preoperative baseline to postoperative assessment, up to 30 days after colorectal surgery.

Collaborators and Investigators

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

Sponsor

Institute of Oncology Ljubljana

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 24, 2023

Primary Completion (Actual)

December 31, 2025

Study Completion (Estimated)

December 31, 2026

Study Registration Dates

First Submitted

February 4, 2026

First Submitted That Met QC Criteria

February 4, 2026

First Posted (Actual)

February 11, 2026

Study Record Updates

Last Update Posted (Actual)

July 10, 2026

Last Update Submitted That Met QC Criteria

July 8, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • OI-2023-BIA
  • ERIDNPVO-0070/2023 (Other Identifier: Ethics Committee of the Institute of Oncology Ljubljana)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

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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