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Monitoring patients at risk of massive transfusion with Thrombelastography or Thromboelastometry: a systematic review.
MedLine Citation:
PMID:  22092122     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
BACKGROUND: Thrombelastography (TEG) and Thrombelastometry (ROTEM) are viscoelastic whole-blood assays evaluating the haemostatic capacity of blood. These devices are used in algorithms to guide transfusion of haemostatic blood components.
METHODS: The methods used for this study were systematic reviews with meta-analyses and trial sequential analyses of randomised clinical trials (RCTs) of TEG/ROTEM-based algorithm compared with standard treatment in patients with bleeding. Primary outcome was all-cause mortality. We searched the literature in seven databases (up to 31 October 2010), reference lists, registers of ongoing trials, and contacted authors and experts. We extracted data from included studies related to study methods, interventions, outcomes, bias risk and adverse events using Cochrane methodology. All trials irrespective of blinding or language status were included.
RESULTS: Nine trials involving 776 participants were included. Eight trials involved cardiac surgery with an average blood loss of 390-960 ml, and one trial investigated liver transplantations. One trial was classified as low-risk-of-bias trial. We found two ongoing trials. No impact was identified on mortality, amount of blood transfused, incidence of surgical reinterventions, time to extubation, or length of stay in hospital and intensive care unit. We identified a significant reduction in blood loss favouring the use of TEG/ROTEM {85 ml [95% confidence interval (CI) 29.4-140.7]} and in the proportion of patients receiving freshly frozen plasma and platelets [relative risk 0.39 (95%CI 0.27-0.57)].
CONCLUSION: There is currently weak evidence to support the use of TEG/ROTEM as a tool to guide transfusion in patients with severe bleeding. Further studies need to address other clinical settings and with larger blood losses.
Authors:
A J Wikkelsoe; A Afshari; J Wetterslev; J Brok; A M Moeller
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta anaesthesiologica Scandinavica     Volume:  55     ISSN:  1399-6576     ISO Abbreviation:  Acta Anaesthesiol Scand     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-11-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370270     Medline TA:  Acta Anaesthesiol Scand     Country:  England    
Other Details:
Languages:  eng     Pagination:  1174-89     Citation Subset:  IM    
Copyright Information:
© 2011 The Authors. Acta Anaesthesiologica Scandinavica © 2011 The Acta Anaesthesiologica Scandinavica Foundation.
Affiliation:
Department of Anesthesiology and Intensive Care, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark.
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