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. 2016 Aug 22;2016(8):CD007871. doi: 10.1002/14651858.CD007871.pub3

Summary of findings 2. Thromboelastography (TEG) or thromboelastometry (ROTEM) compared to clinical judgement or usual care in adults or children with bleeding.

TEG or ROTEM compared to clinical judgement or usual care in adults or children with bleeding
Patient or population: adults or children with bleeding
 Setting: majority of participants were undergoing cardiac surgery involving cardiopulmonary bypass in a high‐income hospital setting
 Intervention: TEG or ROTEM
 Comparison: clinical judgement or usual care
Outcomes Anticipated absolute effects* (95% CI) Relative effect
 (95% CI) № of participants
 (studies) Quality of the evidence
 (GRADE) Comments
Risk with clinical judgement or usual care Risk with TEG or ROTEM
Mortality Study population RR 0.81
 (0.32 to 2.01) 445
 (4 studies) ⊕⊕⊝⊝
 low Quality of the evidence (GRADE) adjusted due to high risk of bias and imprecision.
41 per 1000 33 per 1000
 (13 to 82)
 
Proportion of patients receiving PRBCs Study population RR 0.85
 (0.73 to 1.00) 486
 (6 studies) ⊕⊕⊝⊝
 low Quality of the evidence (GRADE) adjusted due to high risk of bias and imprecision.
622 per 1000 529 per 1000
 (454 to 622)
 
Proportion of patients receiving FFP Study population RR 0.38
 (0.21 to 0.68) 415
 (4 studies) ⊕⊕⊝⊝
 low Quality of the evidence (GRADE) adjusted due to high risk of bias and imprecision.
415 per 1000 158 per 1000
 (87 to 283)
 
Proportion of patients receiving platelets Study population RR 0.59
 (0.43 to 0.80) 486
 (6 studies) ⊕⊕⊝⊝
 low Quality of the evidence (GRADE) adjusted due to high risk of bias and imprecision.
311 per 1000 184 per 1000
 (134 to 249)
 
Rate of surgical reintervention Study population RR 0.62
 (0.32 to 1.20) 537
 (5 studies) ⊕⊕⊝⊝
 low Quality of the evidence (GRADE) adjusted due to high risk of bias and imprecision.
77 per 1000 48 per 1000
 (25 to 93)
 
*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).
 CI: confidence interval; FFP: fresh frozen plasma; PRBC: pooled red blood cell; ROTEM: thromboelastometry; RR: risk ratio; TEG: thromboelastography.
GRADE Working Group grades of evidenceHigh quality: We are very confident that the true effect lies close to that of the estimate of the effect.
 Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different.
 Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect.
 Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect.