Complement Activation and Central Nervous System Injury A... | NCT00188006

Studies
Complement Activation and Central Nervous System Injury After Coronary Artery Surgery

NCT00188006

Sponsor

University Hospital, Angers

Status

Completed

Last Update Posted

Sep 16, 2005Estimated

Enrollment

Not provided

Phase

Not Applicable

Conditions

Coronary Artery Bypass Grafting

Interventions

heparin-coated cardiopulmonary bypass

Countries

Not provided

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

Status Module

Record Verification Date

Sep 2005

Overall Recruitment Status or Expanded Access Status

Completed

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

Not provided

Primary Completion Date

Not provided

Completion Date

Not provided

First Submitted Date

Sep 9, 2005

First Submission Date that Met QC Criteria

Sep 9, 2005

First Posted Date

Sep 16, 2005Estimated

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Sep 9, 2005

Last Update Posted Date

Sep 16, 2005Estimated

Description Module

Brief Summary

The impact of the postoperative inflammatory response on the central nervous system after cardiac surgery is uncertain.

The goal of this study was to evaluate the role of complement activation on cellular brain injury and neurological functioning in patients undergoing coronary artery surgery. In addition, the effect of complement activation on the cerebral vasomotricity was assessed.

Because receptors to activated complement are present on astrocytes, the heparin-coated cardiopulmonary bypass that reduces complement activation should minimize these postoperative neurological adverse events. Heparin-coating might also influence blood flow velocity in cerebral arteries postoperatively if complement activation mediates cardiopulmonary bypass induced cerebral vasomotor dysfunction.

Detailed Description

Closed cardiopulmonary bypass and controlled suctions of pericardial shed blood were standardized in all patients.

Bedside transcranial Doppler examination served to evaluate the development of cerebral vasomotor dysfunction in a subgroup of patients.

Design Module

Study Type

Interventional

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Not provided

Target Follow-Up Duration

Not provided

Phases

Not Applicable

Interventional Study Design

Allocation

Biospecimen

No data available

No data is available for this block.

Enrollment

Not provided

Name	Type	Description	Arm Group Labels	Other Names
heparin-coated cardiopulmonary bypass	Device

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
sC5b-9 release
s100beta release

Secondary Outcomes

Measure	Description	Time Frame
changes in neuropsychological functioning (z scores of cognitive domains)
blood flow velocity in the middle cerebral artery (subgroup)

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

Inclusion Criteria:

men undergoing coronary artery bypass surgery using cardiopulmonary bypass

Exclusion Criteria:

clinical conditions expected to potentially influence the magnitude of the systemic inflammatory response after surgery such as open heart surgery, women because they show higher complement activation after surgery, redo cases, organ dysfunction as defined by the Euroscore such as chronic airway disease or renal dysfunction with creatinine level above 200 µmol/L, patients with left ventricular ejection fraction below 35%, diabetes mellitus under insulin therapy prior to the operation, presence of active inflammatory disease or patients taking anti-inflammatory drugs (except acetylsalicylic acid).
significant carotid artery stenoses (>70%) at the preoperative echo-doppler examination, evidence of preexisting neurologic or psychiatric disease, existence of preoperative neuropsychological impairment as defined by preoperative Mini-Mental State Examination (MMSE) below 27, and alcohol addiction.

Accepts Healthy Volunteers

Sex

Male

Sex/Gender Based

Not provided

Sex/Gender Description

Not provided

Minimum Age

18 Years

Maximum Age

Not provided

Standard Ages

AdultOlder Adult

Study Population

Not provided

Sampling Method

Not provided

Name	Affiliation	Role
Christophe BAUFRETON, MD PhD	University Hospital of Angers, France	Principal Investigator

References Module

Citations

PubMed Identifier	Type	Citation	Retractions
15854939	Result	Baufreton C, Allain P, Chevailler A, Etcharry-Bouyx F, Corbeau JJ, Legall D, de Brux JL. Brain injury and neuropsychological outcome after coronary artery surgery are affected by complement activation. Ann Thorac Surg. 2005 May;79(5):1597-605. doi: 10.1016/j.athoracsur.2004.08.061.