Cardiac Output by Nine Different Pulse Contour Algorithms

February 10, 2016 updated by: Ole Broch, MD, University Hospital Schleswig-Holstein

Estimation of Cardiac Output by Nine Different Pulse Contour Algorithms Compared With Transpulmonary Thermodilution

The aim of the present study is to compare accuracy and precision of Cardiac Output (CO) by nine different pulse contour algorithms with transpulmonary thermodilution before and after cardiopulmonary bypass (CPB).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

After induction of anesthesia, a central venous catheter and a transpulmonary thermodilution catheter (Pulsion Medical Systems, Munich, Germany) are introduced in the right internal jugular vein and in the femoral artery, respectively. The thermodilution catheter is connected to a PiCCO2 monitor (Software version 1.3.0.8). Thereafter, placement of an esophageal doppler probe is performed and the probe is connected to a unique Monitoring System (Deltex Medical, Chichester, UK) with nine different pulse contour algorithms. Cardiac Output by esophageal doppler is used to calibrate the nine different pulse contour algorithms.

After induction of anesthesia and establishment of all monitoring devices, a passive leg raising maneouvre (PLR) is performed and hemodynamic variables including CO by transpulmonary thermodilution (COTPTD) and CO by nine different pulse contour algorithms (COX1-9) are recorded before, during and after PLR. Subsequently, measurements of COTPTD and COX1-9 are carried out every 10 minutes until the beginning of CPB. Fifteen minutes after weaning from cardiopulmonary bypass calibration of nine different pulse contour algorithms by esophageal doppler are performed again and measurements of CITPTD and CIPFX are restarted up to the end of the surgical Intervention.

Study Type

Interventional

Enrollment (Actual)

30

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

  • Germany
      • Hamburg, Germany, 20099
        • Berthold Bein

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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients > 18 years of age with a left ventricular ejection fraction ≥ 0.5.
  • Patients undergoing coronary artery bypass grafting.

Exclusion Criteria:

  • Patients <18 years of age and with a left ventricular ejection fraction ≤0.5 are not considered for the study.
  • Emergency procedures and patients with hemodynamic instability requiring continuous pharmacologic support, intracardiac shunts, severe aortic-, tricuspid- or mitral stenosis or insufficiency and mechanical circulatory support were also excluded.

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

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Other: Cardiac output measurement
Other: Cardiac output measurement
Measurement of cardiac output by transpulmonary thermodilution, nine different pulse contour algorithms and esophageal doppler before, during and after a PLR-maneouvre and every 10 minutes before and after cardiopulmonary Bypass.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Accuracy of cardiac output in l/min by nine different pulse contour algorithms compared with transpulmonary thermodilution
Time Frame: After induction of anesthesia until the end of surgery
After induction of anesthesia until the end of surgery

Collaborators and Investigators

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

Sponsor

University Hospital Schleswig-Holstein

Investigators

  • Principal Investigator: Berthold Bein, MD, PhD, Asklepios Klinik St. Georg

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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

November 1, 2014

Primary Completion (Actual)

November 1, 2015

Study Completion (Actual)

November 1, 2015

Study Registration Dates

First Submitted

April 29, 2015

First Submitted That Met QC Criteria

May 5, 2015

First Posted (Estimate)

May 8, 2015

Study Record Updates

Last Update Posted (Estimate)

February 11, 2016

Last Update Submitted That Met QC Criteria

February 10, 2016

Last Verified

February 1, 2016

More Information

Terms related to this study

Keywords

Other Study ID Numbers

  • AZ-138

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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