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Usefulness of thromboelastography for perioperative evaluation of hemostatic profile in patients with primary brain tumors undergoing surgery


1 Department of Anaesthesiology, King George's Medical University, Lucknow, Uttar Pradesh, India
2 Department of Anaesthesiology, Institute of Liver and Biliary Diseases, New Delhi, India
3 Department of Transfusion Medicine, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India

Correspondence Address:
Hemlata ,
Additional Professor, Department of Anaesthesiology, King George's Medical University, Lucknow, Uttar Pradesh
India
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/aer.aer_136_21

Context: Hemostatic abnormalities are more common in patients with brain tumors than systemic malignant diseases. Conventional coagulation tests (CCT) are poor assays for dynamic assessment of clot strength in whole blood. Thromboelastography (TEG) gives us detailed information on the dynamics of clot development, stabilization, and dissolution reflecting in vivo hemostasis. TEG can assess both thrombosis and fibrinolysis. Aims: This study aimed to investigate the temporal trends in hemostatic profile occurring during surgery for primary brain tumors, using a combination of TEG and CCT, and to assess perioperative blood component support. Subjects and Methods: A prospective, observational study was done on 40 patients with primary brain tumors larger than 4 cm in maximum diameter on computed tomography or magnetic resonance imaging. The tests (TEG and CCT [PT, INR, activated partial thromboplastin time, and platelet count]) were performed preoperatively (on the day of surgery), intraoperatively (2 h into surgery), and postoperatively (the day after surgery). Statistical Analysis: SPSS Version 21.0 statistical analysis software was used. Results: We found a universal trend toward hypercoagulability (persistent decrease in R-time, K-time and increase in MA, α-angle, Coagulation Index) in all the TEG parameters measured intraoperatively and postoperatively even though the values were within normal limits. Results of CCT had poor correlation with TEG parameters. The mean intraoperative blood loss was 737.7 ± 185.6 mL, for which PRBC was transfused in 17 patients, FFP in 13, but no platelet transfusion was done intraoperatively. Conclusions: We found a trend toward hypercoagulability in our study in intraoperative and postoperative period using TEG which was not evident on CCT. TEG was a useful diagnostic tool to identify coagulation abnormalities and to guide perioperative blood transfusion.


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    -  Khatri V
    -  Hemlata
    -  Mehrotra MK
    -  Kohli M
    -  Malik A
    -  Verma A
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