Findings

What do systematic reviews say?

7 questions · 7 findings · 1 reviews

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No studies found 3 · 42.9%GRADE not reported 0 · 0%Very low 0 · 0%Low 2 · 28.6%Moderate 0 · 0%High 2 · 28.6%

Direct estimation using calibrated drapes vs indirect estimation using gravimetric technique

Maternal blood loss of 500 mL or greater · women undergoing vaginal birth

Direct measurement using calibrated drapes leads to higher blood loss ≥ 500 mL compared with indirect estimation using gravimetric technique (high certainty).

1 finding from 1 review

Methods for blood loss estimation after vaginal birth 2018 · Cochrane Headline outcomes only
RR 1.86 [1.11, 3.11]
1 study · 900 participants
High

Direct estimation using calibrated drapes vs indirect estimation using gravimetric technique

Blood transfusion · women undergoing vaginal birth

Direct measurement using calibrated drapes showed no clear difference in blood transfusion compared with indirect estimation using gravimetric technique (low certainty).

1 finding from 1 review

Methods for blood loss estimation after vaginal birth 2018 · Cochrane Headline outcomes only
RR 1 [0.06, 15.94]
1 study · 900 participants
Low

Direct estimation using calibrated drapes vs indirect estimation using gravimetric technique

Use of plasma expanders · women undergoing vaginal birth

Direct measurement using calibrated drapes showed no clear difference in use of plasma expanders compared with indirect estimation using gravimetric technique (low certainty).

1 finding from 1 review

Methods for blood loss estimation after vaginal birth 2018 · Cochrane Headline outcomes only
RR 0.67 [0.19, 2.35]
1 study · 900 participants
Low

Direct estimation using calibrated drapes vs indirect estimation using gravimetric technique

Use of therapeutic uterotonics · women undergoing vaginal birth

Direct measurement using calibrated drapes showed no clear difference in use of therapeutic uterotonics compared with indirect estimation using gravimetric technique (high certainty).

1 finding from 1 review

Methods for blood loss estimation after vaginal birth 2018 · Cochrane Headline outcomes only
RR 1.01 [0.9, 1.13]
1 study · 900 participants
High

Direct estimation using calibrated drapes vs indirect estimation using gravimetric technique

Maternal infection · women undergoing vaginal birth

The review found no eligible studies for this question.

1 finding from 1 review

Methods for blood loss estimation after vaginal birth 2018 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Direct estimation using calibrated drapes vs indirect estimation using gravimetric technique

Maternal postpartum anaemia (haemoglobin 24–48 hours postpartum) · women undergoing vaginal birth

The review found no eligible studies for this question.

1 finding from 1 review

Methods for blood loss estimation after vaginal birth 2018 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found

Direct estimation using calibrated drapes vs indirect estimation using gravimetric technique

Severe morbidity · women undergoing vaginal birth

The review found no eligible studies for this question.

1 finding from 1 review

Methods for blood loss estimation after vaginal birth 2018 · Cochrane Headline outcomes only
no estimate extracted
Studies not reported
No studies found