Cardiovascular DiseasesPhase 2NCT00000604
Influence of CPB Temperature on CABG Morbidity
A Phase 2 study testing cardiopulmonary bypass and heart arrest, induced in people with Cardiovascular Diseases and Coronary Disease, run by Baystate Medical Center.
Trial summary
To compare three accepted modes of myocardial preservation, warm, tepid, and cold blood cardioplegia, coinciding with normothermic (37 degrees centigrade), tepid (32 degrees centigrade) and hypothermic (8 to 10 degrees centigrade) cardiopulmonary bypass (CPB) to define differences in neurologic function in coronary… Read more about this study
- Who is it for?
- Ages 18 to 70 years
- Conditions the study is for
- Cardiovascular Diseases, Coronary Disease, Heart Diseases
- What is being tested?
- cardiopulmonary bypass and heart arrest, induced
- Type of treatment
- Surgery or procedure
- How many people
- Not given
- Where
- No sites listed yet
- Study dates
- Jan 1994to Dec 1996
- Phase
- Phase 2
- 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 to 70 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Patients, referred for elective or urgent coronary revascularization, not having ongoing angina instability, requiring three or more bypass grafts, and under 70 years of age.
About this study
To compare three accepted modes of myocardial preservation, warm, tepid, and cold blood cardioplegia, coinciding with normothermic (37 degrees centigrade), tepid (32 degrees centigrade) and hypothermic (8 to 10 degrees centigrade) cardiopulmonary bypass (CPB) to define differences in neurologic function in coronary artery bypass graft (CABG) patients.
Read the detailed description
BACKGROUND:
A pilot study of warm versus cold perfusion and preservation was completed in 32 patients prior to the ongoing study. The findings of the pilot study showed 53 percent of patients had evidence of new neurologic disturbance at postoperative day four. Only the neurologic dysfunction could be correlated with warm versus cold perfusion (37.5 percent warm versus 75 percent cold, P less than 0.05). The changes in neurologic function had abated or clearly improved by one month of follow-up, and the distinction in neurologic dysfunction grading was no longer apparent between the two groups.
DESIGN NARRATIVE:
Patients were randomly assigned to cold, tepid, or warm blood cardioplegia, coinciding with normothermic, tepid, and hypothermic cardiopulmonary bypass. All patients received a standard anesthetic protocol combining narcotic and inhalational anesthesia. Each patient entering the study had extensive clinical data collected prospectively incorporating most aspects of measurable determinants related to myocardial preservation. Additionally, neurologic tests were performed by a blinded neurologist and rated by an objective scoring system, the Mathew scale. The studies were performed preoperatively, on the third or fourth postoperative day, and at one month following surgery. Hematologic data were measured for fibrinolytic potential.
- Conditions
- Cardiovascular Diseases, Coronary Disease, Heart Diseases, Myocardial Ischemia, Neurologic Manifestations
- Being tested
- cardiopulmonary bypass, heart arrest, induced
- Medical subject headings
- Cardiovascular Diseases, Coronary Disease, Heart Diseases, Myocardial Ischemia, Neurologic Manifestations
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
cardiopulmonary bypassProcedure or surgery
heart arrest, inducedProcedure or surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Oct 1999 (estimated)
- Study startJan 1994
- Study completionDec 1996
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Cardiovascular DiseasesStudies 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 2
- Primary purpose
- Treatment
- Allocation
- Randomised
Sponsor and investigators
- Lead sponsor
- Baystate Medical Center
- Sponsor type
- University, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00000604
- Sponsor's protocol ID
- 108
- Other IDs
- R01HL048631
- Status last verified
- Dec 2015
- First submitted
- 27 Oct 1999
- Last updated
- 14 Dec 2015
- Results posted
- No
Publications
Engelman RM, Pleet AB, Rousou JA, Flack JE 3rd, Deaton DW, Kulshrestha P, Gregory CA, Pekow PS. Does cardiopulmonary bypass temperature correlate with postoperative central nervous system dysfunction? J Card Surg. 1995 Jul;10(4 Suppl):493-7. doi: 10.1111/j.1540-8191.1995.tb00683.x.
PubMed 7579848Engelman RM, Pleet AB, Rousou JA, Flack JE 3rd, Deaton DW, Gregory CA, Pekow PS. What is the best perfusion temperature for coronary revascularization? J Thorac Cardiovasc Surg. 1996 Dec;112(6):1622-32; discussion 1632-3. doi: 10.1016/S0022-5223(96)70021-1.
PubMed 8975854
Study at a glance
From the registry record, last updated by the sponsor on 14 Dec 2015. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Influence of CPB Temperature on CABG Morbidity
- ClinicalTrials.gov ID
- NCT00000604
- Acronym / sponsor ID
- 108
- Conditions
- Cardiovascular Diseases, Coronary Disease, Heart Diseases, Myocardial Ischemia, Neurologic Manifestations
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Lead sponsor
- Baystate Medical CenterUniversity, hospital or other
- Collaborators
- National Heart, Lung, and Blood Institute (NHLBI)
- Study start
- Jan 1994
- Study completion
- Dec 1996
- First posted
- 28 Oct 1999 (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.
To compare three accepted modes of myocardial preservation, warm, tepid, and cold blood cardioplegia, coinciding with normothermic (37 degrees centigrade), tepid (32 degrees centigrade) and hypothermic (8 to 10 degrees centigrade) cardiopulmonary bypass (CPB) to define differences in neurologic function in coronary artery bypass graft (CABG) patients.
Detailed description
BACKGROUND:
A pilot study of warm versus cold perfusion and preservation was completed in 32 patients prior to the ongoing study. The findings of the pilot study showed 53 percent of patients had evidence of new neurologic disturbance at postoperative day four. Only the neurologic dysfunction could be correlated with warm versus cold perfusion (37.5 percent warm versus 75 percent cold, P less than 0.05). The changes in neurologic function had abated or clearly improved by one month of follow-up, and the distinction in neurologic dysfunction grading was no longer apparent between the two groups.
DESIGN NARRATIVE:
Patients were randomly assigned to cold, tepid, or warm blood cardioplegia, coinciding with normothermic, tepid, and hypothermic cardiopulmonary bypass. All patients received a standard anesthetic protocol combining narcotic and inhalational anesthesia. Each patient entering the study had extensive clinical data collected prospectively incorporating most aspects of measurable determinants related to myocardial preservation. Additionally, neurologic tests were performed by a blinded neurologist and rated by an objective scoring system, the Mathew scale. The studies were performed preoperatively, on the third or fourth postoperative day, and at one month following surgery. Hematologic data were measured for fibrinolytic potential.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
Who may qualify
- Ages
- 18 to 70 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
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 |
|---|---|---|
| cardiopulmonary bypass | Procedure or surgery | – |
| heart arrest, induced | Procedure or surgery | – |
Primary outcome
Not reported in the source record.
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 14 Dec 2015.
- Background: PubMed 7579848Engelman RM, Pleet AB, Rousou JA, Flack JE 3rd, Deaton DW, Kulshrestha P, Gregory CA, Pekow PS. Does cardiopulmonary bypass temperature correlate with postoperative central nervous system dysfunction? J Card Surg. 1995 Jul;10(4 Suppl):493-7. doi: 10.1111/j.1540-8191.1995.tb00683.x.
- Background: PubMed 8975854Engelman RM, Pleet AB, Rousou JA, Flack JE 3rd, Deaton DW, Gregory CA, Pekow PS. What is the best perfusion temperature for coronary revascularization? J Thorac Cardiovasc Surg. 1996 Dec;112(6):1622-32; discussion 1632-3. doi: 10.1016/S0022-5223(96)70021-1.
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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.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing cardiopulmonary bypass and heart arrest, induced in people with Cardiovascular Diseases and Coronary Disease, run by Baystate Medical Center.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
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 14 Dec 2015. Status can change between updates, so confirm with the study contact before making plans.
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.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
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.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00000604, which also lists 2 linked publications.
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 14 Dec 2015.