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Table 1 Summary of published randomised controlled trials included in the review

From: Definitions of massive transfusion in adults with critical bleeding: a systematic review

Study

Clinical setting

Country

Intervention

Control

Total number of subjects recruited

MT definition

Bulger 2008

Trauma

USA

Hypertonic saline/dextran

Lactated Ringer solution

209

 ≥ 10 U RBC/24 h

Hauser 2010 (CONTROL)

Trauma

Multinational

rFVIIa

Placebo

573

 ≥ 10 U RBC/24 h

Nascimento 2013 (TRFL)

Trauma

Canada

Fixed-ratio transfusion

Laboratory-guided transfusion

78

 ≥ 10 U RBC/24 h

Holcomb 2015 (PROPPR)

Trauma

Multinational

1:1:1 RBC:FFP:PLT

1:1:2 RBC:FFP:PLT

680

 ≥ 10 U RBC/24 h

Innerhofer 2017 (RETIC)

Trauma

Austria

FFP

CFC

100

 ≥ 10 U RBC/24 h

Sperry 2018 (PAMPer)

Trauma

USA

Plasma

Standard care

501

 ≥ 10 U RBC/24 h

Baksaas-Aasen 2021(iTACTIC)

Trauma

Multinational

VHA

CCT

396

 ≥ 10 U RBC/24 h

Bouzat 2021 (PROCOAG)

Trauma

France

Four-factor PCC

Saline

N/A

 ≥ 3 U RBC/1 h or ≥ 10 U RBC/24 h

Jost 2022 (PREHO-PLYO)

Trauma

France

Plasma

Control

134

 ≥ 10 U RBC/24 h

Moore 2018 (COMBAT)

Trauma

USA

Plasma

Saline

125

 > 10 U RBC

Boffard 2005

Trauma

Multinational

rFVIIa

Placebo

277

 > 20 U RBC

Nathens 2006

Trauma

USA

Leukoreduced transfusion

Non-leukoreduced

268

 > 6 U/24 h

Martinaud 2019 (T-STORHM)

Trauma

France

Whole blood

Component therapy

N/A

 ≥ 4 U RBC/6 h

Girdauskas 2010

Cardiothoracic surgery

Germany

Treatment group

Control group

56

 > 20 U blood

Vlasov 2020 (ALBICS)

Cardiothoracic surgery

Finland

4% albumin

Ringer's acetate solution

N/A

 ≥ 5 U RBC

Klein 2001

Cardiothoracic surgery

Multinational

Roller pump

BioPump

1000

 > 5 U blood

Locker 1997

Orthopedic surgery

Austria

PGE1

Placebo

45

 > 10 U RBC

Ngichabes 2015

Obstetrics /gynaecology

Kenya

TXA

Ornipressin

34

 > 5 U blood

Reed 1986

Mixed

USA

PLT

FFP

33

 ≥ 12 U blood/12 h

  1. MT massive transfusion, USA United States of America, U units, RBC red blood cells, h hours, rFVIIa recombinant factor VIIa, FFP fresh frozen plasma, PLT platelets, CFC coagulation factor concentrates, VHA viscoelastic haemostatic assays, CCT conventional coagulation tests, PCC prothrombin complex concentrate, PGE1 prostaglandin E1, N/A not applicable