• Anaesthesia · Mar 2019

    Comparative Study

    A comparison of the new ROTEM® sigma with its predecessor, the ROTEMdelta.

    • B Schenk, K Görlinger, B Treml, H Tauber, D Fries, C Niederwanger, E Oswald, and M Bachler.
    • Department of General and Surgical Intensive Care Medicine, Medical University of Innsbruck, Austria.
    • Anaesthesia. 2019 Mar 1; 74 (3): 348-356.

    AbstractThromboelastometry point-of-care coagulation testing facilitates optimised management of bleeding. Previous thromboelastometry systems required the blood sample and liquid reagents to be pipetted in several manual steps by trained personnel. The ROTEMsigma coagulation analyser is a fully automated point-of-care device. We aimed to assess the reference ranges of the new device and to compare the results with those of the predecessor device, the ROTEMdelta. We took blood from healthy volunteers and from hyper- or hypocoagulable patients; blood samples from healthy volunteers served to determine reference ranges for the most important parameters for the ROTEMsigma: CTEXTEM 48-61 s; A5EXTEM 30-51 mm; MCFEXTEM 54-70 mm; CTINTEM 138-174 s; MCFINTEM 51-67 mm and MCFFIBTEM 5-24 mm. We then used blood samples from patients to compare the results obtained between the old and the new device. We found a strong correlation between the same tests performed on two ROTEMsigma devices and between the ROTEMsigma and the ROTEMdelta with respect to the determination of thromboelastometry parameters of hyper- and hypocoagulable patients (all p < 0.001 and R > 0.8). Performance evaluation for the ROTEMsigma device showed very high precision (R > 0.99, p < 0.001). Our reference ranges can serve as an important aid for other hospitals using this new device.© 2018 Association of Anaesthetists.

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