Complement (C3, C4) Consumption In Cardiopulmonary Bypass ...

Clipboard, Search History, and several other advanced features are temporarily unavailable. Skip to main page content

The .gov means it’s official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation Search: Search Advanced Clipboard Save Email Send to

• Clipboard
• My Bibliography
• Collections
• Citation manager

Display options Display options Format Abstract PubMed PMID

Save citation to file

Format: Summary (text) PubMed PMID Abstract (text) CSV Create file Cancel

Email citation

Email address has not been verified. Go to My NCBI account settings to confirm your email and then refresh this page. To: Subject: Body: Format: Summary Summary (text) Abstract Abstract (text) MeSH and other data Send email Cancel

Add to Collections

• Create a new collection
• Add to an existing collection

Name your collection: Name must be less than 100 characters Choose a collection: Unable to load your collection due to an error Please try again Add Cancel

Add to My Bibliography

• My Bibliography

Unable to load your delegates due to an error Please try again Add Cancel

Your saved search

Name of saved search: Search terms: Test search terms Would you like email updates of new search results? Saved Search Alert Radio Buttons

• Yes
• No

Email: (change) Frequency: Monthly Weekly Daily Which day? The first Sunday The first Monday The first Tuesday The first Wednesday The first Thursday The first Friday The first Saturday The first day The first weekday Which day? Sunday Monday Tuesday Wednesday Thursday Friday Saturday Report format: Summary Summary (text) Abstract Abstract (text) PubMed Send at most: 1 item 5 items 10 items 20 items 50 items 100 items 200 items Send even when there aren't any new results Optional text in email: Save Cancel

Create a file for external citation management software

Create file Cancel

Your RSS Feed

Name of RSS Feed: Number of items displayed: 5 10 15 20 50 100 Create RSS Cancel RSS Link Copy

Full text links

Elsevier Science Full text links

Actions

CiteCollectionsAdd to Collections

• Create a new collection
• Add to an existing collection

Name your collection: Name must be less than 100 characters Choose a collection: Unable to load your collection due to an errorPlease try again Add Cancel PermalinkPermalinkCopyDisplay options Display options Format AbstractPubMedPMID

Page navigation

• Title & authors
• Abstract
• Publication types
• MeSH terms
• Substances
• LinkOut - more resources

Title & authors Abstract Publication types MeSH terms Substances LinkOut - more resources Full text links CiteDisplay options Display options Format AbstractPubMedPMID

Abstract

Anaphylatoxins produced by complement activation have been postulated to be responsible for postperfusion syndrome and protamine hypotension in patients undergoing cardiac surgical procedures. The consumption of serum complement components C3 and C4, which reflects the classic and alternate pathway activations of the complement system, was studied in 22 patients undergoing cardiac operations. Prior to the onset of cardiopulmonary bypass, the complement levels were within normal range. Rapid reduction in both C3 and C4 within minutes of cardiopulmonary bypass indicated rapid complement activation. Such a reduction in complement levels could not be accounted for by either hemodilution or transfusion of complement-poor blood. Aortic cross-clamping and cold potassium cardioplegia followed by myocardial reperfusion did not lead to further consumption of C3 and C4. Slow intravenous infusion of protamine sulfate after cardiopulmonary bypass did not change C3 and C4 levels significantly in our patients, although protamine and heparin-protamine complex have been shown to activate complement components in vitro. In another group of 9 similar cardiac surgical patients, C3 and C4 were found to return to normal levels within 24 hours after operation. This study thus confirms the rapid activation of the complement system by cardiopulmonary bypass but fails to demonstrate further activation of the complement system by cardioplegia or protamine administration.

PubMed Disclaimer

Publication types

• Research Support, Non-U.S. Gov't Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search

MeSH terms

• Adult Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Aged Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Cardiopulmonary Bypass* Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Complement Activation Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Complement C3 / analysis* Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Complement C4 / analysis* Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Female Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Heart Arrest, Induced* Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Humans Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Male Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Middle Aged Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Protamines / administration & dosage* Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search

Substances

• Complement C3 Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Complement C4 Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search
• Protamines Actions
  • Search in PubMed
  • Search in MeSH
  • Add to Search

LinkOut - more resources

• Full Text Sources

  • Elsevier Science

• Other Literature Sources

  • The Lens - Patent Citations Database

• Miscellaneous

  • NCI CPTAC Assay Portal

Full text links [x] Elsevier Science [x] Cite Copy Download .nbib .nbib Format: AMA APA MLA NLM Send To

• Clipboard
• Email
• Save
• My Bibliography
• Collections
• Citation Manager

[x]

NCBI Literature Resources

MeSH PMC Bookshelf Disclaimer

The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). Unauthorized use of these marks is strictly prohibited.