Tranexamic acid leads to paradoxical coagulation changes during cardiac surgery: a pilot rotational thromboelastometry study

SummaryWe have investigated hemostatic parameters including platelet activation in 56 pediatric patients with or without cyanosis undergoing cardiopulmonary bypass (CPB) and cardiac surgery to repair congenital defects. Patients were participants in a study assessing the effects of tranexamic acid on surgery-related blood loss. Parameters monitored included blood loss, prothrombin F1.2, thrombin-antithrombin complexes, t-PA, PAI-1, plasminogen, fibrin D-dimer, and plasma factor XIII. Additionally, flow cytometry monitored platelet degranulation (P-selectin or CD63), as well as surface-bound fibrinogen, von Willebrand factor and factor XIIIa. Cyanotic patients had evidence of supranormal coagulation activation as both fibrin D-dimer and PAI-1 levels were elevated prior to surgery. While the extent of expression of Pselectin or CD63 was not informative, platelet-associated factor XIIIa was elevated in cyanotic patients at baseline. In both patient groups, CPB altered platelet activation state and coagulation status irrespective of the use of tranexamic acid.

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The Influence of Aprotinin and Tranexamic Acid on Platelet Function and Postoperative Blood Loss in Cardiac Surgery

Anesthesia & Analgesia ◽

10.1213/ane.0b013e31817b7732 ◽

2008 ◽

Vol 107 (2) ◽

pp. 391-397 ◽

Cited By ~ 27

Author(s):

Andinet M. Mengistu ◽

Kerstin D. Röhm ◽

Joachim Boldt ◽

Jochen Mayer ◽

Stefan W. Suttner ◽

...

Keyword(s):

Cardiac Surgery ◽

Blood Loss ◽

Tranexamic Acid ◽

Platelet Function ◽

Postoperative Blood Loss

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Effects of implementing rotational thromboelastometry in cardiac surgery: A retrospective cohort study

Journal of Perioperative Practice ◽

10.1177/1750458920950662 ◽

2021 ◽

pp. 175045892095066

Author(s):

Minna Kallioinen ◽

Mika Valtonen ◽

Marko Peltoniemi ◽

Ville-Veikko Hynninen ◽

Tuukka Saarikoski ◽

...

Keyword(s):

Cardiac Surgery ◽

Prothrombin Complex Concentrate ◽

Fresh Frozen Plasma ◽

Blood Products ◽

Rotational Thromboelastometry ◽

Number Of Patients ◽

Fresh Frozen ◽

The Mean ◽

To Receive ◽

Frozen Plasma

Since 2013, rotational thromboelastometry has been available in our hospital to assess coagulopathy. The aim of the study was to retrospectively evaluate the effect of thromboelastometry testing in cardiac surgery patients. Altogether 177 patients from 2012 and 177 patients from 2014 were included. In 2014, the thromboelastometry testing was performed on 56 patients. The mean blood drainage volume decreased and the number of patients receiving platelets decreased between 2012 and 2014. In addition, the use of fresh frozen plasma units decreased, and the use of prothrombin complex concentrate increased in 2014. When studied separately, the patients with a thromboelastometry testing received platelets, fresh frozen plasma, fibrinogen and prothrombin complex concentrate more often, but smaller amounts of red blood cells. In conclusion, after implementing the thromboelastometry testing to the practice, the blood products were given more cautiously overall. The use of thromboelastometry testing was associated with increased possibility to receive coagulation product transfusions. However, it appears that thromboelastometry testing was mostly used to assist in management of major bleeding.

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