J Thromb Haemost
August 2021
Background: Diagnosis of heparin-induced thrombocytopenia (HIT) requires pretest probability assessment and dedicated laboratory assays.
Objective: To develop a pretest score for HIT.
Design: Observational; analysis of prospectively collected data of hospitalized patients suspected with HIT (ClinicalTrials.
Reliable laboratory diagnosis of heparin-induced thrombocytopenia (HIT) remains a major clinical concern. Immunoassays are highly sensitive, while confirmatory functional tests (based on heparin-dependent platelet activation) lack standardization. We evaluated the diagnostic performance of a functional flow cytometric assay (FCA) based on the detection of heparin-dependent platelet activation with an anti-p-selectin.
View Article and Find Full Text PDFObjective: This article estimates the interaction between types of combined hormonal contraception (CHC) and factor V Leiden (FVL) mutation on the risk of venous thrombosis event (VTE).
Subjects And Methods: All premenopausal women with first incident VTE who were referred to our unit (Paris, France) between 2000 and 2009 were included in this case-only study. Differences in interactions by progestin type were assessed on a multiplicative scale, assuming the independence of genotype and prescription of type of CHC.
Context: In UK and French, but not World Health Organization (WHO), guidelines for combined hormonal contraception (CHC), family history of a venous thromboembolism (VTE) is a condition for which the theoretical risks usually outweigh the advantages of using CHC.
Objective: We estimated the prevalence of inappropriate prescriptions of CHC according to several international guidelines and their impact on VTE.
Design: A single-center observational study.