Philippe Guerci: HIT after Cardiac Surgery – Are We Using the Right Tools?
Philippe Guerci, Professor at CHRU de Nancy, shared a post on LinkedIn about a recent article he and his colleagues co-authored, published in Journal of Cardiothoracic and Vascular Anesthesia, adding:
“New publication – HIT after cardiac surgery: are we using the right tools?
Work led by Thomas Klein, bringing together a highly talented team of hematobiologists (Philippe Savard, Toussaint Hacquard Marie, Emmanuel de Maistre, Thomas Lecompte), clinicians (Sandrine Grosjean, Guillaume Soyer) and methodologists-biostatisticians (Cedric Baumann, Amandine Luc, Elodie Jeanbert) across two expert centers.
Congratulations to all.
This bicentric study (Nancy 🇫🇷 and Dijon 🇫🇷) provides one of the most robust comparative evaluations to date of clinical scores for heparin-induced thrombocytopenia (HIT) in the challenging context of cardiac surgery with CPB.
Key findings:
- No clear winner among the 4 major HIT scores (4Ts, HEP, CPB, GFHT)
- All scores show excellent rule-out performance (NPV nearly 94–97%)
- Limited positive predictive value – caution against overdiagnosis
- Identification of a typical biphasic platelet pattern (early drop and delayed nadir nearly day 10) as a strong clinical signal
- The HEP score trends toward best overall performance, but without statistical superiority
Clinical message:
- In post-cardiac surgery patients, HIT scores are rule-out tools, not rule-in tools
- Diagnostic strategies must remain multimodal, combining clinical expertise with advanced functional assays
- This work highlights the strength of close collaboration between anesthesiologists, intensivists, and hematobiologists, essential to tackle complex perioperative coagulation disorders.
A great example of how bicenter collaboration enhances external validity and clinical relevance.”
Title: Evaluating Four HIT Prediction Scores After Cardiac Surgery With Cardiopulmonary Bypass: A Comparative Study
Authors: Guillaume Soyer, Philippe Savard, Philippe Guerci, Marie Toussaint Hacquard, Elodie Jeanbert, Amandine Luc, Cédric Baumann, Sandrine Grosjean, Emmanuel de Maistre, Thomas Lecompte, Thomas Klein

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