HemostasisCOAGAVNCT05875272
Interchangeability of Arterial Coagulation and Venous Coagulation, in the Context of Cardiac Surgeries Under Cardiopulmonary Bypass, Using the DMDiv Hemochron Signature Elite
An observational study of Hemostasis and Extracorporeal Circulation, run by Centre Hospitalier Universitaire, Amiens at 1 site in France.
Trial summary
Adequate coagulation measured using activated clotting (ACT) is important during vascular and cardiac surgeries. Unfractionated heparin is the most common anticoagulant used. For point of care testing, under supervision of biology department, the investigators use Hemochron Signature Elite®(HSE) (Werfen®-Barcelona… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Hemostasis, Extracorporeal Circulation, Heparin
- What is being tested?
- interchangeability of arterial or venous hemostasis
- Type of treatment
- Surgery or procedure
- How many people
- 201 participants
- Where
- 1 siteFrance
- Study dates
- 7 Jun 2023to 7 Jun 2026
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Patients aged 18 and over, undergoing conventional heart surgery under normothermic Cardiopulmonary Bypass (nadir 34°) (Aortic valve replacement, coronary artery bypass graft surgery, valve plasty, atrial septal defect, ventricular septal defect, intracardiac tumours, heart surgery, ascending aorta, combined surgery…)
Who may be able to join
- Patients aged 18 and over,
- undergoing conventional heart surgery under normothermic Cardiopulmonary Bypass (nadir 34°) (Aortic valve replacement, coronary artery bypass graft surgery, valve plasty, atrial septal defect, ventricular septal defect, intracardiac tumours, heart surgery, ascending aorta, combined surgery…)
- They must be affiliated with Social Security in France, and have given their written consent.
Who cannot join
- Minor Patients,
- Emergency Cardiac Surgeries, Extracorporeal circulation in hypothermia, Cardiac surgery without CEC
- Patients already included in a research protocol,
- Patient under guardianship or curators or deprived of public law,
- Patient with proven Heparin Induced Thrombopenia (HIT) not receiving heparin
- Pregnant woman, breastfeeding or parturient
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Prospective, Monocentric Study of the Interchangeability of Arterial Coagulation and Venous Coagulation, in the Context of Cardiac Surgeries Under Cardiopulmonary Bypass, Using the DMDiv Hemochron Signature Elite
Adequate coagulation measured using activated clotting (ACT) is important during vascular and cardiac surgeries. Unfractionated heparin is the most common anticoagulant used. For point of care testing, under supervision of biology department, the investigators use Hemochron Signature Elite®(HSE) (Werfen®-Barcelona Spain) to determine coagulation during cardiac surgery under Cardiopulmonary Bypass (CPB), with arterial or venous blood. The dosage of heparin varies according to this result, throughout the CPB. On the Connect Manager® software (Livanova®, Italy) which records all the data of a CPB, it is mandatory to inform, during an ACT, the sampling site in arterial or venous. The chemical compositions of arterial blood and venous blood are different (O2, Co2…) Even if the qualities of coagulation in vivo are identical, what happens when they are chemically analyzed using the medical device HSE ? Can we trust the results of this device to secure anticoagulation under CPB? Are the results affected by the sampling site? The objective of this study is to compare the reliability of hemostasis control , during cardiac surgery under cardiopulmonary bypass, for both venous and arterial blood. Effective and controllable anticoagulation is mandatory during cardiac surgeries under extracorporeal circulation. The monitoring of the effectiveness of heparin is carried out, in our center, using the Hemochron Signature Elite® (HSE) medical device, which measures the ACT (Activated Clotting Time). There is no comparative study between hemostasis of venous blood, versus arterial blood, with this point of care device.
- Being tested
- interchangeability of arterial or venous hemostasis
- Keywords
- Hemostasis, extra corporeal circulation, heparin, Activated Clotting Time, Hemochron, venous and arterial blood, cardio-pulmonary bypass
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
interchangeability of arterial or venous hemostasisProcedure or surgery
Paired arterial and venous blood sampling respectively on the radial arterial catheter and on the central venous catheter before the extracorporeal circulation, and on the sampling ramp during the extracorporeal circulation. Point of care biology exams are performed on two HSE devices simultaneously. Controls carried out, routinely, every 20 minutes according to the service protocol, before the CPB (starting ACT without heparin), during the CPB (ACT objective ≥400 seconds), after protamine reversal of heparin. On average, 10 samples are taken during heart surgery.
What is being measured
The primary outcome is the main question the study is designed to answer.
Activated Clotting Time after using the Hemochron Signature Elite® medical device
Measured: day 1
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 May 2023
- Study start7 Jun 2023
- Primary completion7 Jun 2026
- Study completion7 Jun 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HemostasisStudies of the same condition, open and under way.
- More trials run by Centre Hospitalier Universitaire, AmiensThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case only
- Time perspective
- Prospective
- Enrolment
- 201 participants (actual)
Sponsor and investigators
- Lead sponsor
- Centre Hospitalier Universitaire, Amiens
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05875272
- Sponsor's protocol ID
- PI2023_843_0057
- Acronym
- COAGAV
- Status last verified
- Jun 2026
- First submitted
- 16 May 2023
- Last updated
- 25 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 25 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Prospective, Monocentric Study of the Interchangeability of Arterial Coagulation and Venous Coagulation, in the Context of Cardiac Surgeries Under Cardiopulmonary Bypass, Using the DMDiv Hemochron Signature Elite
- ClinicalTrials.gov ID
- NCT05875272
- Acronym / sponsor ID
- COAGAV / PI2023_843_0057
- Keywords
- Hemostasis, extra corporeal circulation, heparin, Activated Clotting Time, Hemochron, venous and arterial blood, cardio-pulmonary bypass
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 201 participants (actual)
- Lead sponsor
- Centre Hospitalier Universitaire, AmiensUniversity, hospital or other
- Study start
- 7 Jun 2023 (actual)
- Primary completion
- 7 Jun 2026 (actual)
- Study completion
- 7 Jun 2026 (actual)
- First posted
- 25 May 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Adequate coagulation measured using activated clotting (ACT) is important during vascular and cardiac surgeries. Unfractionated heparin is the most common anticoagulant used. For point of care testing, under supervision of biology department, the investigators use Hemochron Signature Elite®(HSE) (Werfen®-Barcelona Spain) to determine coagulation during cardiac surgery under Cardiopulmonary Bypass (CPB), with arterial or venous blood. The dosage of heparin varies according to this result, throughout the CPB. On the Connect Manager® software (Livanova®, Italy) which records all the data of a CPB, it is mandatory to inform, during an ACT, the sampling site in arterial or venous. The chemical compositions of arterial blood and venous blood are different (O2, Co2…) Even if the qualities of coagulation in vivo are identical, what happens when they are chemically analyzed using the medical device HSE ? Can we trust the results of this device to secure anticoagulation under CPB? Are the results affected by the sampling site? The objective of this study is to compare the reliability of hemostasis control , during cardiac surgery under cardiopulmonary bypass, for both venous and arterial blood. Effective and controllable anticoagulation is mandatory during cardiac surgeries under extracorporeal circulation. The monitoring of the effectiveness of heparin is carried out, in our center, using the Hemochron Signature Elite® (HSE) medical device, which measures the ACT (Activated Clotting Time). There is no comparative study between hemostasis of venous blood, versus arterial blood, with this point of care device.
Study design
- Observational model
- Case only
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients aged 18 and over, undergoing conventional heart surgery under normothermic Cardiopulmonary Bypass (nadir 34°) (Aortic valve replacement, coronary artery bypass graft surgery, valve plasty, atrial septal defect, ventricular septal defect, intracardiac tumours, heart surgery, ascending aorta, combined surgery…)
Key inclusion criteria (3 listed)
- Patients aged 18 and over,
- undergoing conventional heart surgery under normothermic Cardiopulmonary Bypass (nadir 34°) (Aortic valve replacement, coronary artery bypass graft surgery, valve plasty, atrial septal defect, ventricular septal defect, intracardiac tumours, heart surgery, ascending aorta, combined surgery…)
- They must be affiliated with Social Security in France, and have given their written consent.
Key exclusion criteria (6 listed)
- Minor Patients,
- Emergency Cardiac Surgeries, Extracorporeal circulation in hypothermia, Cardiac surgery without CEC
- Patients already included in a research protocol,
- Patient under guardianship or curators or deprived of public law,
- Patient with proven Heparin Induced Thrombopenia (HIT) not receiving heparin
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| interchangeability of arterial or venous hemostasisPaired arterial and venous blood sampling respectively on the radial arterial catheter and on the central venous catheter before the extracorporeal circulation, and on the sampling ramp during the extracorporeal circulation. Point of care biology exams are performed on two HSE devices simultaneously. Controls carried out, routinely, every 20 minutes according to the service protocol, before the CPB (starting ACT without heparin), during the CPB (ACT objective ≥400 seconds), after protamine reversal of heparin. On average, 10 samples are taken during heart surgery. | Procedure or surgery | – |
Primary outcome
Activated Clotting Time after using the Hemochron Signature Elite® medical device
Time frame: day 1
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 25 Jun 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Hemostasis and Extracorporeal Circulation, run by Centre Hospitalier Universitaire, Amiens at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 25 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Activated Clotting Time after using the Hemochron Signature Elite® medical device (time frame: day 1). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jun 2026.