Cochrane · systematic review · CD002042

Transfusion thresholds for guiding red blood cell transfusion

Carson, JL, Stanworth, SJ, Dennis, JA, et al. · Cochrane Database of Systematic Reviews · 2021 · Cochrane Library

Injuries2 versionsAMSTAR 2: not assessed
SoF tableOnly the outcomes this review put in its Summary of Findings table are listed (the Cochrane Handbook caps them at about seven per comparison). Its other analyses are not shown here.
Questions
8
current version
GRADE rated
8
No studies
0
Included studies
NR
No studies 0 · 0%Ungraded 0 · 0%Very low 0 · 0%Low 1 · 12.5%Moderate 2 · 25%High 5 · 62.5%

Ungraded means an effect was reported without a GRADE rating; it is not a gap. No studies means the review found nothing to answer the question. The six categories are a display order, not a score.

Questions and results

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Liberal compared with restrictive transfusion protocols for guiding red blood cell transfusion

Population: adults and children (haemodynamically stable) with potential need for RBC transfusion
8 questions
OutcomeEffectEvidenceStatus / GRADE
Participants exposed to blood transfusion (all studies)
Liberal vs restrictive transfusion protocols
RR 0.59 [0.53, 0.66]42 studies · 20057 participantsHigh
30‐Day mortality
Liberal vs restrictive transfusion protocols
RR 0.99 [0.86, 1.15]31 studies · 16729 participantsHigh
Myocardial infarction
Liberal vs restrictive transfusion protocols
RR 1.04 [0.87, 1.24]23 studies · 14370 participantsHigh
Congestive heart failure
Liberal vs restrictive transfusion protocols
RR 0.83 [0.53, 1.29]16 studies · 7247 participantsLow
Downgraded: imprecision, inconsistency
Cerebrovascular accident ‐ stroke
Liberal vs restrictive transfusion protocols
RR 0.84 [0.64, 1.09]19 studies · 13985 participantsHigh
Rebleeding
Liberal vs restrictive transfusion protocols
RR 0.8 [0.59, 1.09]8 studies · 3412 participantsModerate
Downgraded: imprecision, inconsistency
Thromboembolism
Liberal vs restrictive transfusion protocols
OR 1.11 [0.65, 1.88]13 studies · 4201 participantsModerate
Downgraded: imprecision, inconsistency
Infection
Liberal vs restrictive transfusion protocols
RR 0.97 [0.88, 1.07]25 studies · 17104 participantsHigh