Cardiopulmonary BypassPRBCNCT01173822
Processed Residual Pump Blood in Cardiac Surgery: The PRBC Trial
A study testing Ultrafiltration of residual blood in people with Cardiopulmonary Bypass and Hemorrhage, run by Hamilton Health Sciences Corporation at 1 site in Canada.
Trial summary
The study is an randomized controlled trial (RCT) of 198 coronary artery bypass graft (CABG) patients, exploring whether ultrafiltration of residual blood in the cardiopulmonary bypass circuit reduces transfusion and bleeding. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Cardiopulmonary Bypass, Hemorrhage, Surgery
- What is being tested?
- Ultrafiltration of residual blood
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 200 participants
- Where
- 1 siteCanada
- Study dates
- Dec 2004to Apr 2007
- Phase
- Interventional
- 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
Who may be able to join
- at least 18 years of age
- were to undergo isolated on-pump CABG
- were able to give informed consent
Who cannot join
- performed autologous blood donation
- underwent off-pump CABG
- emergency procedure
- resternotomy
- known bleeding disorder not drug related
- history of heparin-induced thrombocytopenia
- Jehovah's Witness
- intra-operative catastrophe prior to randomization
Trial locations and contacts
1 site in 1 country.
About this study
The study is an randomized controlled trial (RCT) of 198 coronary artery bypass graft (CABG) patients, exploring whether ultrafiltration of residual blood in the cardiopulmonary bypass circuit reduces transfusion and bleeding.
Read the detailed description
Blood products are a limited resource and cardiac surgery is a high consumer. Processing residual cardiopulmonary bypass (CPB) volume via ultrafiltration may improve hemostasis and reduce transfusion through clearing activated complement, activated coagulation components, and proinflammatory cytokines. Unlike cell saver technology, ultrafiltration has the advantage of maintaining plasma proteins, platelets, and coagulation factors. We sought to establish if the processing of residual CPB volume with ultrafiltration reduces homologous blood transfusion and bleeding.
- Conditions
- Cardiopulmonary Bypass, Hemorrhage, Surgery
- Being tested
- Ultrafiltration of residual blood
- Keywords
- cardiopulmonary bypass, hemorrhage, trials, surgery
- Medical subject headings
- Hemorrhage
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Ultrafiltration of residual bloodOther
The inflow line to the hemoconcentrator was connected to the sideport of the arterial filter stopcock, allowing the residual blood in the CPB circuit to be processed through the hemoconcentrator. The outflow line from the hemoconcentrator was connected to a second three way stopcock located on the cardiotomy reservoir. Blood was circulated from the venous reservoir through the hemoconcentrator and returned to the venous reservoir until the desired hematocrit was achieved. The blood was then diverted to a transfer pack until all the blood from the venous reservoir, heat exchanger, and membrane oxygenator had been filtered and hemoconcentrated. This transfer pack was given to the anesthetist for reinfusion into the patient.
| Study group | Role | What they receive |
|---|---|---|
| Treatment group | Experimental | Ultra filtration of residual blood. Receives: Other: Ultrafiltration of residual blood |
| Control | No intervention | The current practice in our institution was to displace all the remaining volume in the CPB circuit into a transfer pack by displacing the remaining blood in the CPB circuit with additional Lactated Ringers solution. This transfer pack is then given to the anesthetist for reinfusion into the patient. Receives: Other: Ultrafiltration of residual blood |
What is being measured
The primary outcome is the main question the study is designed to answer.
the proportion of patients transfused with homologous red blood cells (RBC)
Measured: At 30 days post-operatively
Secondary outcomes (5)
Proportion of patients transfused with any blood product
Measured: At 30 days post-operatively
Volume of pRBC's transfused post-operative
Measured: At 30 days post-operatively
Post-operative hemorrhage
Measured: At 24 hours post-operative
Discharge Hemoglobin
Measured: A date of discharge, median 5 days in study
Length of hospital stay
Measured: From day to surgery to discharge, median 5 days in this study
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Aug 2010 (estimated)
- Study startDec 2004
- Primary completionApr 2007
- Study completionApr 2007
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Cardiopulmonary BypassStudies of the same condition, open and under way.
- 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
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Single group
- Masking
- Double blind
- Enrolment
- 200 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hamilton Health Sciences Corporation
- Sponsor type
- University, hospital or other
- Investigators
- Richard Whitlock, MD MSc, Principal investigator, Hamilton Health Sciences Corporation
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01173822
- Sponsor's protocol ID
- PRBC-1
- Acronym
- PRBC
- Status last verified
- Jul 2010
- First submitted
- 16 Jul 2010
- Last updated
- 2 Aug 2010
- Results posted
- No
- Data monitoring committee
- Yes
Publications
Whitlock R, Mathew J, Eikelboom J, Al-Saleh AM, Yuan F, Teoh K. Processed residual pump blood in cardiac surgery: the Processed Residual Blood in Cardiac surgery trial. Transfusion. 2013 Jul;53(7):1487-92. doi: 10.1111/j.1537-2995.2012.03958.x. Epub 2012 Nov 26.
PubMed 23176311
Study at a glance
From the registry record, last updated by the sponsor on 2 Aug 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Processed Residual Pump Blood in Cardiac Surgery: The PRBC Trial
- ClinicalTrials.gov ID
- NCT01173822
- Acronym / sponsor ID
- PRBC / PRBC-1
- Conditions
- Cardiopulmonary Bypass, Hemorrhage, Surgery
- Keywords
- cardiopulmonary bypass, hemorrhage, trials, surgery
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 200 participants (actual)
- Lead sponsor
- Hamilton Health Sciences CorporationUniversity, hospital or other
- Study start
- Dec 2004
- Primary completion
- Apr 2007 (actual)
- Study completion
- Apr 2007 (actual)
- First posted
- 2 Aug 2010 (estimated)
- 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.
The study is an randomized controlled trial (RCT) of 198 coronary artery bypass graft (CABG) patients, exploring whether ultrafiltration of residual blood in the cardiopulmonary bypass circuit reduces transfusion and bleeding.
Detailed description
Blood products are a limited resource and cardiac surgery is a high consumer. Processing residual cardiopulmonary bypass (CPB) volume via ultrafiltration may improve hemostasis and reduce transfusion through clearing activated complement, activated coagulation components, and proinflammatory cytokines. Unlike cell saver technology, ultrafiltration has the advantage of maintaining plasma proteins, platelets, and coagulation factors. We sought to establish if the processing of residual CPB volume with ultrafiltration reduces homologous blood transfusion and bleeding.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Single group
- Masking
- Double blind
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Treatment group | Experimental | Other: Ultrafiltration of residual bloodUltra filtration of residual blood. |
| Control | No intervention | Other: Ultrafiltration of residual bloodThe current practice in our institution was to displace all the remaining volume in the CPB circuit into a transfer pack by displacing the remaining blood in the CPB circuit with additional Lactated Ringers solution. This transfer pack is then given to the anesthetist for reinfusion into the patient. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- at least 18 years of age
- were to undergo isolated on-pump CABG
- were able to give informed consent
Key exclusion criteria (8 listed)
- performed autologous blood donation
- underwent off-pump CABG
- emergency procedure
- resternotomy
- known bleeding disorder not drug related
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 |
|---|---|---|
| Ultrafiltration of residual bloodThe inflow line to the hemoconcentrator was connected to the sideport of the arterial filter stopcock, allowing the residual blood in the CPB circuit to be processed through the hemoconcentrator. The outflow line from the hemoconcentrator was connected to a second three way stopcock located on the cardiotomy reservoir. Blood was circulated from the venous reservoir through the hemoconcentrator and returned to the venous reservoir until the desired hematocrit was achieved. The blood was then diverted to a transfer pack until all the blood from the venous reservoir, heat exchanger, and membrane oxygenator had been filtered and hemoconcentrated. This transfer pack was given to the anesthetist for reinfusion into the patient. | Other | Control, Treatment group |
Primary outcome
the proportion of patients transfused with homologous red blood cells (RBC)
Time frame: At 30 days post-operatively
5 secondary outcomes
Proportion of patients transfused with any blood product
Time frame: At 30 days post-operatively
Volume of pRBC's transfused post-operative
Time frame: At 30 days post-operatively
Post-operative hemorrhage
Time frame: At 24 hours post-operative
Discharge Hemoglobin
Time frame: A date of discharge, median 5 days in study
Length of hospital stay
Time frame: From day to surgery to discharge, median 5 days in this study
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 2 Aug 2010.
- Derived from this study: PubMed 23176311Whitlock R, Mathew J, Eikelboom J, Al-Saleh AM, Yuan F, Teoh K. Processed residual pump blood in cardiac surgery: the Processed Residual Blood in Cardiac surgery trial. Transfusion. 2013 Jul;53(7):1487-92. doi: 10.1111/j.1537-2995.2012.03958.x. Epub 2012 Nov 26.
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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.
Richard Whitlock, MD MSc principal investigator
Hamilton Health Sciences Corporation
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Ultrafiltration of residual blood in people with Cardiopulmonary Bypass and Hemorrhage, run by Hamilton Health Sciences Corporation at 1 site in Canada.
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 8 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 2 Aug 2010. 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 Canada. 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?
the proportion of patients transfused with homologous red blood cells (RBC) (time frame: At 30 days post-operatively). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01173822, which also lists 1 linked publication.
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 2 Aug 2010; AzTrials last refreshed its copy on 7 Nov 2026.