Abstract
Background: Preeclampsia (PE) is a pregnancy complication characterized by high blood pressure and significant amounts of protein in the urine. Various coagulation abnormalities have been described in pregnant women with PE. The aim of the present case-control study was to evaluate whole blood thromboelastometry profiles, performed by ROTEM®, in women with PE in order to better characterize the PE-related discoagulopathy.
Methods: Standard ROTEM® (Tem International GmbH, Munich, Germany) parameters evaluating clot initiation [clotting time (CT)], propagation [clot formation time (CFT); α-angle], stability [maximum clot firmness (MCF)] and lysis [maximum lysis (ML)] in INTEM, EXTEM, NATEM, and FIBTEM assays were performed in 30 consecutive pregnant women with PE at diagnosis. Sixty (1:2 ratio with cases) healthy pregnant women, matched for gestational age (±2 weeks) with the cases, acted as controls. Platelet count, prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen, antithrombin and D-Dimer were also evaluated.
Results: Preeclamptic women showed a significantly more rapid propagation phase in EXTEM assay than controls (CFT 62±15 vs. 75±15 s and α-angle 78±4 vs. 75±4°, p<0.01 in both cases). Moreover, MCF was significantly higher and ML significantly lower in women with PE than in healthy pregnant women (p=0.001 for all comparisons).
Conclusions: ROTEM® profiles in women with PE were characterized by an increased tissue factor driven clot propagation capability. In addition, higher clot stability due both to the increase in clot firmness and the decrease in blood fibrinolysis was observed. Larger studies are needed to identify the clinical relevance of ROTEM® alterations in women with PE.
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