Viscoelastic point-of-care testing for monitoring unfractionated heparin in critically ill patients: a prospective observational study comparing ClotPro® IN/HI-Test, aPTT and Anti-Xa activity. - Mirus M; Dietze A; Tiebel O; Beyer-Westendorf J; Grottke O; Tesch F; Spieth PM; Heubner L (BMC anesthesiology, 2026)