Evidence map›Paper›PMID 24316606›Full record

SynthesisInteractive cardiovascular and thoracic surgery2014

The effects of pre- and postoperative fibrinogen levels on blood loss after cardiac surgery: a systematic review and meta-analysis.

Chantal Gielen, Olaf Dekkers, Theo Stijnen, Jan Schoones, Anneke Brand, Robert Klautz, Jeroen Eikenboom

Registry-linked trialOpen access · bronzeAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Interactive cardiovascular and thoracic surgery, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05525195 (Influence of Preoperative Fibrinogen Levels on Blood Loss and Transfusions in Pediatric Cardiac Surgery), which is not on this map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05525195 completednot on this mapstarted 2022, after this paper: background citation

Influence of Preoperative Fibrinogen Levels on Blood Loss and Transfusions in Pediatric Cardiac Surgery

TypeobservationalSponsorBrugmann University HospitalRan2022 to 2023Enrolled932ConditionsCardiac Surgery, Congenital Heart Disease, Cardiopulmonary Bypass, FibrinogenemiaArmsCongenital cardiac surgery
3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 102 citations in OpenAlex.

  1. Preoperative anemia and anemia treatment in cardiac surgery: a systematic review and meta-analysis.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2024
    Pooled it
  2. Trial
  3. Prophylactic Fibrinogen Decreases Postoperative Bleeding but Not Acute Kidney Injury in Patients Undergoing Heart Transplantation.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis · 2018
    Trial
  4. Trial
  5. Trial
  6. Does Intraoperative Fibrinogen Affect Blood Loss or Transfusion Practice After Aortic Arch Surgery: A Prematurely Ended Randomized Trial.Clinical and applied thrombosis/hemostasis : official journal of the International Academy of Clinical and Applied Thrombosis/Hemostasis
    Trial
  7. Article
  8. Article
  9. Observational
  10. Observational
  11. 2024 EACTS/EACTAIC Guidelines on patient blood management in adult cardiac surgery in collaboration with EBCP.European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery · 2025
    Article
  12. Article
  13. Effects of In-House Cryoprecipitate Use on Transfusion Volume for Cardiopulmonary Bypass Surgery.Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia · 2025
    Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Chantal GielenDepartments of Cardio-Thoracic Surgery and Thrombosis and Hemostasis, Leiden University Medical Center (LUMC), Leiden, Netherlands.
Olaf Dekkers
Theo Stijnen
Jan Schoones
Anneke Brand
Robert Klautz
Jeroen Eikenboom
Leiden University Medical Center · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesFibrinogen concentrate is increasingly used in cardiac surgery when bleeding is anticipated or ongoing. Since randomized clinical studies to support this are lacking, it is relevant to know whether lower fibrinogen levels are associated with excessive bleeding. We performed a systematic review and meta-analysis to define the association between fibrinogen levels and blood loss after cardiac surgery.

methodsA database search (January 2013) was performed on publications assessing the association between pre- and postoperative fibrinogen levels and postoperative blood loss in adult patients undergoing cardiac surgery. Cohort studies and case-control studies were eligible for inclusion. The main outcome was the pooled correlation coefficient, calculated via Fisher's Z transformation scale, in a random-effects meta-analysis model stratified for the time point at which fibrinogen was measured.

resultsA total of 20 studies were included. The pooled correlation coefficient of studies (n = 9) concerning preoperative fibrinogen levels and postoperative blood loss was -0.40 (95% confidence interval: -0.58, -0.18), pointing towards more blood loss in patients with lower preoperative fibrinogen levels. Among papers (n = 16) reporting on postoperative fibrinogen levels and postoperative blood loss, the pooled correlation coefficient was -0.23 (95% confidence interval: -0.29, -0.16).

conclusionsOur meta-analysis indicated a significant but weak-to-moderate correlation between pre- and postoperative fibrinogen levels and postoperative blood loss in cardiac surgery. This moderate association calls for appropriate clinical studies on whether fibrinogen supplementation will decrease postoperative blood loss.

Indexed as

BiomarkersCardiac Surgical ProceduresChi-Square DistributionCoagulantsFibrinogenHumansPostoperative HemorrhageRisk AssessmentRisk FactorsTime FactorsTreatment OutcomeBiomarkersCoagulantsFibrinogenBlood lossCardiac surgeryFibrinogen

Identifiers

PMID24316606
PMCPMC3930216
OpenAlexW2102238212

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.