Concordance Between the Measurement of Whole Blood Fibrinogen by the qLabs®FIB Analyzer and Its Measurement by Conventional Method (Clauss Fibrinogen) in the Context of Severe Postpartum Haemorrhage

NCT06255002 | Completed

• 1 other identifier: APHP231640
• Study Type: observational
• Target: 70
• Locations: 1 country
• Sites: 2

Brief Summary

In France in 2021, 11.6% of deliveries were complicated by a postpartum haemorrhage (PPH), including 3.0% by severe PPH (the bleeding volume exceeds 1000 ml). Severe PPH is the 5th cause of maternal death (8.4% or 1.2 deaths per 100,000 live births). These deaths were considered preventable in 90% of cases. A plasma fibrinogen concentration below 2 g/L is considered as a critical threshold which constitutes a marker of severity of PPH and is significantly associated with the occurrence of severe PPH. Measuring the concentration of fibrinogen using a rapid test, simple to perform and interpret, available in the delivery room could optimize the management of severe PPH. The qLabs®FIB analyzer distributed by the Stago Biocare laboratory for the rapid determination of the fibrinogen concentration at the patient's bedside could meet this objective.

Conditions

Postpartum Hemorrhage

Keywords

Severe postpartum haemorrhage; Fibrinogen concentration; qLabs®FIB Monitoring system; Clauss fibrinogen assay

Outcome Measures

Primary Outcomes (1)

• Agreement between fibrinogen measurement by qLabs®FIB and by the Clauss method

  Calculation of the average bias and the 95% limits of agreement between the measurement of qLabs®FIB fibrinogen in the delivery room and Clauss fibrinogen at the medical biology laboratory using the Bland and Altman graphic method. A difference of 0.1 g between the two techniques will be considered acceptable to identify patients with a fibrinogen level \< 2 g/L.

  Through study completion, an average of 1 year

Secondary Outcomes (3)

• Evaluation of the ease of use of qLabs®FIB by the anesthesia team

  Through study completion, an average of 1 year

• Evaluation of the time taken to obtain the fibrinogen concentration using the 2 methods

  Through study completion, an average of 1 year

• Evaluation of measurement failure by qLabs®FIB

  Through study completion, an average of 1 year

Study Arms (1)

Patients

Patients giving birth in the Cochin Port Royal and Necker Enfants Malades (APHP) maternity units and cared for severe postpartum haemorrhage defined as bleeding greater than 1000 ml within 24 hours of postpartum, regardless of the route of delivery (vaginal delivery and cesarean section).

Biological: Fibrinogen concentration by the qLabs®FIB Monitoring system

Interventions

Fibrinogen concentration by the qLabs®FIB Monitoring system BIOLOGICAL

A drop of blood (\~15 μL) is taken from the blood sample for the complete haemostasis assessment (prothrombin level, activated partial thromboplastin time, fibrinogen). This assessment is part of the usual management of severe postpartum haemorrhage. It is carried out urgently in the hospital's medical biology laboratory at the start of treatment (T1) and during or at the end of treatment of the haemorrhage (T2). This drop of blood will allow the measurement of the fibrinogen concentration by the qLabs®FIB Monitoring system for the study at these two times.

Patients

Eligibility Criteria

• Age: 18 Years+
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Patients giving birth in the two type 3 maternity wards of the Paris Center University Hospital Group : Necker-Enfants Malades et Cochin Port Royal (APHP) and with severe postpartum hemorrhage.

You may qualify if:

• Adult patients having been informed of the study and not having objected to their participation and treated for severe postpartum haemorrhage defined as bleeding greater than 1000 ml within 24 hours postpartum, whatever the route delivery (vaginal route and caesarean section).

You may not qualify if:

• Opposition to participation in the study
• Presence of a constitutional fibrinogen deficiency
• Patients under guardianship or curatorship

Sponsors & Collaborators

• Assistance Publique - Hôpitaux de Paris: lead
• URC-CIC Paris Descartes Necker Cochin: collaborator

Study Sites (2)

Hôpital Cochin Maternité Port Royal

Paris, 75014, France

Location

Hôpital Necker-Enfants Malades

Paris, 75015, France

Location

Related Publications (15)

• Sentilhes L, Vayssiere C, Deneux-Tharaux C, Aya AG, Bayoumeu F, Bonnet MP, Djoudi R, Dolley P, Dreyfus M, Ducroux-Schouwey C, Dupont C, Francois A, Gallot D, Haumonte JB, Huissoud C, Kayem G, Keita H, Langer B, Mignon A, Morel O, Parant O, Pelage JP, Phan E, Rossignol M, Tessier V, Mercier FJ, Goffinet F. Postpartum hemorrhage: guidelines for clinical practice from the French College of Gynaecologists and Obstetricians (CNGOF): in collaboration with the French Society of Anesthesiology and Intensive Care (SFAR). Eur J Obstet Gynecol Reprod Biol. 2016 Mar;198:12-21. doi: 10.1016/j.ejogrb.2015.12.012. Epub 2015 Dec 21.

  PMID: 26773243 BACKGROUND

• Blondel B et al. Enquête nationale périnatale 2021

  BACKGROUND

• Saucedo M, Tessier V, Leroux S, Almeras A, Deneux-Tharaux C. Mortalité maternelle en France, mieux comprendre pour mieux prévenir. Sages-Femmes. sept 2021;20(5):36-42

  BACKGROUND

• Deneux-Tharaux C, Bouvier-Colle MH. Severe acute maternal morbidity in France: the epimoms population-based study. Am J Obstet Gynecol. 1 janv 2017;216(1):S345-6

  BACKGROUND

• Godeberge C, Deneux-Tharaux C, Seco A, Rossignol M, Chantry AA, Bonnet MP; EPIMOMS Study Group. Maternal Intensive Care Unit Admission as an Indicator of Severe Acute Maternal Morbidity: A Population-Based Study. Anesth Analg. 2022 Mar 1;134(3):581-591. doi: 10.1213/ANE.0000000000005578.

  PMID: 33989204 BACKGROUND

• Charbit B, Mandelbrot L, Samain E, Baron G, Haddaoui B, Keita H, Sibony O, Mahieu-Caputo D, Hurtaud-Roux MF, Huisse MG, Denninger MH, de Prost D; PPH Study Group. The decrease of fibrinogen is an early predictor of the severity of postpartum hemorrhage. J Thromb Haemost. 2007 Feb;5(2):266-73. doi: 10.1111/j.1538-7836.2007.02297.x. Epub 2006 Nov 6.

  PMID: 17087729 BACKGROUND

• Deleu F, Deneux-Tharaux C, Chiesa-Dubruille C, Seco A, Bonnet MP; EPIMOMS study Group. Fibrinogen concentrate and maternal outcomes in severe postpartum hemorrhage: A population-based cohort study with a propensity score-matched analysis. J Clin Anesth. 2022 Oct;81:110874. doi: 10.1016/j.jclinane.2022.110874. Epub 2022 Jun 2.

  PMID: 35662057 BACKGROUND

• Green L, Knight M, Seeney F, Hopkinson C, Collins PW, Collis RE, Simpson NA, Weeks A, Stanworth SJ. The haematological features and transfusion management of women who required massive transfusion for major obstetric haemorrhage in the UK: a population based study. Br J Haematol. 2016 Feb;172(4):616-24. doi: 10.1111/bjh.13864. Epub 2015 Dec 18.

  PMID: 26683982 BACKGROUND

• Cortet M, Deneux-Tharaux C, Dupont C, Colin C, Rudigoz RC, Bouvier-Colle MH, Huissoud C. Association between fibrinogen level and severity of postpartum haemorrhage: secondary analysis of a prospective trial. Br J Anaesth. 2012 Jun;108(6):984-9. doi: 10.1093/bja/aes096. Epub 2012 Apr 6.

  PMID: 22490316 BACKGROUND

• Ducloy-Bouthors AS, Mercier FJ, Grouin JM, Bayoumeu F, Corouge J, Le Gouez A, Rackelboom T, Broisin F, Vial F, Luzi A, Capronnier O, Huissoud C, Mignon A; FIDEL working group. Early and systematic administration of fibrinogen concentrate in postpartum haemorrhage following vaginal delivery: the FIDEL randomised controlled trial. BJOG. 2021 Oct;128(11):1814-1823. doi: 10.1111/1471-0528.16699. Epub 2021 Apr 7.

  PMID: 33713384 BACKGROUND

• Liew-Spilger AE, Sorg NR, Brenner TJ, Langford JH, Berquist M, Mark NM, Moore SH, Mark J, Baumgartner S, Abernathy MP. Viscoelastic Hemostatic Assays for Postpartum Hemorrhage. J Clin Med. 2021 Aug 31;10(17):3946. doi: 10.3390/jcm10173946.

  PMID: 34501395 BACKGROUND

• Huissoud C, Carrabin N, Audibert F, Levrat A, Massignon D, Berland M, Rudigoz RC. Bedside assessment of fibrinogen level in postpartum haemorrhage by thrombelastometry. BJOG. 2009 Jul;116(8):1097-102. doi: 10.1111/j.1471-0528.2009.02187.x. Epub 2009 May 12.

  PMID: 19459866 BACKGROUND

• Collins PW, Cannings-John R, Bruynseels D, Mallaiah S, Dick J, Elton C, Weeks AD, Sanders J, Aawar N, Townson J, Hood K, Hall JE, Collis RE. Viscoelastometric-guided early fibrinogen concentrate replacement during postpartum haemorrhage: OBS2, a double-blind randomized controlled trial. Br J Anaesth. 2017 Sep 1;119(3):411-421. doi: 10.1093/bja/aex181.

  PMID: 28969312 BACKGROUND

• Jokinen S, Kuitunen A, Uotila J, Yli-Hankala A. Thromboelastometry-guided treatment algorithm in postpartum haemorrhage: a randomised, controlled pilot trial. Br J Anaesth. 2023 Feb;130(2):165-174. doi: 10.1016/j.bja.2022.10.031. Epub 2022 Dec 7.

  PMID: 36496259 BACKGROUND

• Sanfilippo S, Buisson L, Rouabehi H, Dujaric ME, Donnet T, de Raucourt E, Dumont B, Peynaud-Debayle E. The qLabs(R) FIB system, a novel point-of-care technology for a rapid and accurate quantification of functional fibrinogen concentration from a single drop of citrated whole blood. Thromb Res. 2023 Jun;226:159-164. doi: 10.1016/j.thromres.2023.03.018. Epub 2023 Apr 5.

  PMID: 37178638 BACKGROUND

MeSH Terms

Conditions

Postpartum Hemorrhage

Condition Hierarchy (Ancestors)

Obstetric Labor Complications; Pregnancy Complications; Female Urogenital Diseases and Pregnancy Complications; Urogenital Diseases; Puerperal Disorders; Uterine Hemorrhage; Hemorrhage; Pathologic Processes; Pathological Conditions, Signs and Symptoms

Study Officials

• Hawa KEITA-MEYER, MD-PhD

  Assistance Publique - Hôpitaux de Paris

  PRINCIPAL INVESTIGATOR

• Marc SAMAMA, MD-PhD

  Assistance Publique - Hôpitaux de Paris

  STUDY DIRECTOR

Study Design

• Study Type: observational
• Observational Model: CASE ONLY
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: December 5, 2023
• First Posted: February 12, 2024
• Study Start: June 3, 2024
• Primary Completion: March 2, 2026
• Study Completion: March 2, 2026
• Last Updated: May 28, 2026

Record last verified: 2026-05

Data Sharing

• IPD Sharing: Will not share

Locations

FR (2)