Volume 111, Issue 5 pp. 787-795
ORIGINAL ARTICLE

Prothrombin consumption as an indicator of hemorrhagic phenotype in mild platelet function disorders

Antoine Babuty

Corresponding Author

Antoine Babuty

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

Nantes Université, CHU Nantes, Centre de Ressource et de Compétence—Maladies Hémorragiques Constitutionnelles, Nantes, France

Correspondence

Antoine Babuty, Laboratoire d'Hématologie Biologique, CHU Hôtel-Dieu, Nantes, Cedex 1, France.

Email: [email protected]

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Camille Debord

Camille Debord

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

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Nicolas Drillaud

Nicolas Drillaud

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

Nantes Université, CHU Nantes, Centre de Ressource et de Compétence—Maladies Hémorragiques Constitutionnelles, Nantes, France

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Marion Eveillard

Marion Eveillard

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

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Marc Trossaert

Marc Trossaert

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

Nantes Université, CHU Nantes, Centre de Ressource et de Compétence—Maladies Hémorragiques Constitutionnelles, Nantes, France

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Catherine Ternisien

Catherine Ternisien

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

Nantes Université, CHU Nantes, Centre de Ressource et de Compétence—Maladies Hémorragiques Constitutionnelles, Nantes, France

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Marianne Sigaud

Marianne Sigaud

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

Nantes Université, CHU Nantes, Centre de Ressource et de Compétence—Maladies Hémorragiques Constitutionnelles, Nantes, France

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Emmanuelle Cador

Emmanuelle Cador

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

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Marie C. Béné

Marie C. Béné

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

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Marc Fouassier

Marc Fouassier

Nantes Université, CHU Nantes, Service d'Hématologie Biologique, Nantes, France

Nantes Université, CHU Nantes, Centre de Ressource et de Compétence—Maladies Hémorragiques Constitutionnelles, Nantes, France

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First published: 08 August 2023

Abstract

Background

The bleeding risk of patients with mild platelet function disorders is difficult to assess and their phenotype remains ill-explored.

Aim

This study was designed to establish a comprehensive biological phenotype of patients with mild platelet function disorders.

Methods

Twenty patients were included with persistent abnormal light transmission aggregometry (LTA). The ISTH bleeding assessment tool (ISTH-BAT) was assessed to identify laboratory analyses associated with an abnormal hemorrhagic score.

Results

The majority of patients had defects that might affect Gαi protein signaling pathways or minor abnormalities. No LTA nor flow cytometry parameters were associated with an above-normal hemorrhagic score. However, prothrombin consumption, which corresponds to the ratio of serum residual factor II to plasma residual factor II, was significantly higher (p = .006) in the abnormal ISTH-BAT group (mean = 14%, SD = 6) compared with the normal ISTH-BAT group (mean = 8%, SD 4). Prothrombin consumption was significantly associated with ISTH-BAT score (r = .5287, IC 95% 0.0986–0.7924, p = .0165).

Conclusion

In this group of patients, there was an association between a pathological bleeding score and increased prothrombin consumption. This test could be used as an additional indicator of platelet function abnormality liable to be related to bleeding risk.

CONFLICT OF INTEREST STATEMENT

The authors have no competing interests to declare that are relevant to the content of this article.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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