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Erschienen in:
22.06.2016 | Original Article
Role of Thromboelastography Versus Coagulation Screen as a Safety Predictor in Pre-eclampsia/Eclampsia Patients Undergoing Lower-Segment Caesarean Section in Regional Anaesthesia
Erschienen in: The Journal of Obstetrics and Gynecology of India | Sonderheft 1/2016
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Purpose
In this study, we aimed to correlate thromboelastography (TEG) variables versus conventional coagulation profile in all patients presenting with pre-eclampsia/eclampsia and to see whether TEG would be helpful for evaluating coagulation in parturients before regional anaesthesia.
Materials and Methods
This was a prospective study on 100 pre-eclampsia/eclampsia patients undergoing lower-segment caesarean section under regional anaesthesia. Two blood samples were collected. First sample was used for TEG measurement and second sample for laboratory tests. The following TEG data were obtained—reaction time, kinetic time, alpha angle, and maximum amplitude (MA). The following laboratory tests were obtained—haematology (haemoglobin, TLC, DLC, platelet count) and coagulation test [prothrombin time (PT), activated partial thromboplastin time (aPTT), thrombin time (TT)].
Result
Out of 100 patients enrolled in the study, 80 (80 %) had a normal coagulation profile, while remaining 20 (20 %) had hypocoagulation profile. The results show that TEG parameters have a good correlation with conventional coagulation profile and also showed excellent independent predictive efficacy for prediction of hypocoagulation. PT, aPTT, and TT were directly proportional to R-time and K-time and inversely proportional to alpha angle (p < 0.001). Platelet count showed a strong positive correlation with MA (p < 0.001).
Conclusion
By giving a global picture of haemostasis, TEG can lead to improved decision-making about safety of using regional anaesthesia. Its fast feedback time makes it ideal for monitoring in a fast moving situation such as in obstetric emergency.