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Meta-Analysis
. 2017 Apr 13;25(1):39.
doi: 10.1186/s13049-017-0378-9.

The use of viscoelastic haemostatic assays in goal-directing treatment with allogeneic blood products - A systematic review and meta-analysis

Mathilde Fahrendorff  1 , Roberto S Oliveri  2 , Pär I Johansson  2   3   4
Affiliations
Meta-Analysis

The use of viscoelastic haemostatic assays in goal-directing treatment with allogeneic blood products - A systematic review and meta-analysis

Mathilde Fahrendorff et al. Scand J Trauma Resusc Emerg Med. .

Abstract

Background: Management of the critically bleeding patient can be encountered in many medical and surgical settings. Common for these patients is a high risk of dying from exsanguination secondary to developing coagulopathy. The purpose of this meta-analysis was to systematically review and assess randomised controlled trials (RCTs) performed on patients in acute need for blood transfusions due to bleeding to evaluate the effect of viscoelastic haemostatic assay (VHA) guidance on bleeding, transfusion requirements and mortality.

Methods: PubMed and EMBASE were searched for RCTs that 1) randomised patients into receiving transfusions based on either a VHA-guided (thromboelastography [TEG] or rotational thromboelastometry [ROTEM]) algorithm (intervention group) or at the clinician's discretion and/or based on conventional coagulation tests (control group) and 2) adequately reported on the outcomes bleeding and/or transfusions and/or mortality. Data on bleeding, transfusions and mortality were extracted from each trial and included in a meta-analysis.

Results: Fifteen RCTs (n = 1238 patients) were included. Nine trials referred to cardiothoracic patients, one to liver transplantation, one to surgical excision of burn wounds and one to trauma. One trial was conducted with cirrhotic patients, one with patients undergoing scoliosis surgery while one trial randomised treatment in post-partum females presenting with bleeding. The amount of transfused red blood cells (RBCs), fresh frozen plasma (FFP) and bleeding volume was found to be significantly reduced in the VHA-guided groups, whereas no significant difference was found for platelet transfusion requirements or mortality.

Keywords: Bleeding; Mortality; ROTEM; TEG; Thrombelastography; Thrombelastometry.

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Figures

Fig. 1
Fig. 1
Process of inclusion of trials into meta-analysis
Fig. 2
Fig. 2
Forest plots a All-cause mortality b Perioperative, 24 h and 12 h bleeding c Total transfusion need – RBC d Total transfusion need – FFP e Total transfusion need – Platelets
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