Patient Blood Management for Massive Obstetric Hemorrhage

Summary

Obstetric Hemorrhage continues to be the first cause of maternal morbidity and mortality around the world especially in middle to low income countriesThe blood components are high value resources; however, its use has been shown to be a risk factor of known complications. The aim of the study is to compare two algorithms of coagulation management in massive obstetric hemorrhage Methods A randomized prospective trial single center two arms study in patients with severe obstetric hemorrhage (PPH \> 1000) 2 different transfusion protocols one guided by thromboelastometry and hemostatic drugs (protrombine complex concentrate and fibrinogen concentrate) and the second guided by standard coagulation test and hemocomponents. Sample is calculated to known variance, Analyses are intention-to-treat without imputation, with outcomes will be performed between groups using mixed-effects two level regression models. For binary outcomes, a logistic model will be used and results presented as adjusted odds ratios (ORs) alongside 95% confidence intervals (CIs). Count data will be analysed using Poisson multilevel or negative binomial models. Primary Outcome Parameter: Compare between the two protocols: Number of allogeneic blood products transfused intra-op, within 24h after screening and in-hospital (RBC, Platelets and FFP; separate and overall) Secondary Outcome Parameter: Analysis of mortality, lenth of stay admission to the ICU, hysterectomy surgical reintervencion, Transfuse associated circulatory overload, Transfusion associated Acute lung injury, health associated infection will be measured as secondary outcome.

Timeline

Start

2018-11-01

Primary completion

2020-11-30

Completion

2020-12-30

Publications

• Background Mallaiah S, Barclay P, Harrod I, Chevannes C, Bhalla A. Introduction of an algorithm for ROTEM-guided fibrinogen concentrate administration in major obstetric haemorrhage. Anaesthesia. 2015 Feb;70(2):166-75. doi: 10.1111/anae.12859. Epub 2014 Oct 7.
• Background Mallaiah S, Chevannes C, McNamara H, Barclay P. A reply. Anaesthesia. 2015 Jun;70(6):760-1. doi: 10.1111/anae.13128. No abstract available.
• Background Collins PW, Cannings-John R, Bruynseels D, Mallaiah S, Dick J, Elton C, Weeks AD, Sanders J, Aawar N, Townson J, Hood K, Hall JE, Collis RE. Viscoelastometric-guided early fibrinogen concentrate replacement during postpartum haemorrhage: OBS2, a double-blind randomized controlled trial. Br J Anaesth. 2017 Sep 1;119(3):411-421. doi: 10.1093/bja/aex181.
• Background Wikkelso AJ, Edwards HM, Afshari A, Stensballe J, Langhoff-Roos J, Albrechtsen C, Ekelund K, Hanke G, Secher EL, Sharif HF, Pedersen LM, Troelstrup A, Lauenborg J, Mitchell AU, Fuhrmann L, Svare J, Madsen MG, Bodker B, Moller AM; FIB-PPH trial group. Pre-emptive treatment with fibrinogen concentrate for postpartum haemorrhage: randomized controlled trial. Br J Anaesth. 2015 Apr;114(4):623-33. doi: 10.1093/bja/aeu444. Epub 2015 Jan 13.
• Background Snegovskikh D, Souza D, Walton Z, Dai F, Rachler R, Garay A, Snegovskikh VV, Braveman FR, Norwitz ER. Point-of-care viscoelastic testing improves the outcome of pregnancies complicated by severe postpartum hemorrhage. J Clin Anesth. 2018 Feb;44:50-56. doi: 10.1016/j.jclinane.2017.10.003. Epub 2017 Nov 7.
• Background Olde Engberink RH, Kuiper GJ, Wetzels RJ, Nelemans PJ, Lance MD, Beckers EA, Henskens YM. Rapid and correct prediction of thrombocytopenia and hypofibrinogenemia with rotational thromboelastometry in cardiac surgery. J Cardiothorac Vasc Anesth. 2014 Apr;28(2):210-6. doi: 10.1053/j.jvca.2013.12.004.
• Background Song JG, Jeong SM, Jun IG, Lee HM, Hwang GS. Five-minute parameter of thromboelastometry is sufficient to detect thrombocytopenia and hypofibrinogenaemia in patients undergoing liver transplantation. Br J Anaesth. 2014 Feb;112(2):290-7. doi: 10.1093/bja/aet325. Epub 2013 Sep 24.
• Background Collins PW, Lilley G, Bruynseels D, Laurent DB, Cannings-John R, Precious E, Hamlyn V, Sanders J, Alikhan R, Rayment R, Rees A, Kaye A, Hall JE, Paranjothy S, Weeks A, Collis RE. Fibrin-based clot formation as an early and rapid biomarker for progression of postpartum hemorrhage: a prospective study. Blood. 2014 Sep 11;124(11):1727-36. doi: 10.1182/blood-2014-04-567891. Epub 2014 Jul 14.
• Background Hagemo JS, Christiaans SC, Stanworth SJ, Brohi K, Johansson PI, Goslings JC, Naess PA, Gaarder C. Detection of acute traumatic coagulopathy and massive transfusion requirements by means of rotational thromboelastometry: an international prospective validation study. Crit Care. 2015 Mar 23;19(1):97. doi: 10.1186/s13054-015-0823-y.
• Background Baksaas-Aasen K, Van Dieren S, Balvers K, Juffermans NP, Naess PA, Rourke C, Eaglestone S, Ostrowski SR, Stensballe J, Stanworth S, Maegele M, Goslings JC, Johansson PI, Brohi K, Gaarder C; TACTIC/INTRN collaborators. Data-driven Development of ROTEM and TEG Algorithms for the Management of Trauma Hemorrhage: A Prospective Observational Multicenter Study. Ann Surg. 2019 Dec;270(6):1178-1185. doi: 10.1097/SLA.0000000000002825.
• Background Mace H, Lightfoot N, McCluskey S, Selby R, Roy D, Timoumi T, Karkouti K. Validity of Thromboelastometry for Rapid Assessment of Fibrinogen Levels in Heparinized Samples During Cardiac Surgery: A Retrospective, Single-center, Observational Study. J Cardiothorac Vasc Anesth. 2016 Jan;30(1):90-5. doi: 10.1053/j.jvca.2015.04.030. Epub 2015 May 5.
• Results Perez-Calatayud AA, Briones-Garduno JC, Rojas-Arellano ML. [Use of thromboelastography and thromboelastometry for the rational and opportune transfusion of hemoderivatives in obstetric hemorrhage]. Ginecol Obstet Mex. 2015 Sep;83(9):569-77. Spanish.

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