- •Peripartum quantitative blood loss (QBL) is recommended over visual estimation.
- •QBL measurements were obtained from 41 institutions in the United States.
- •Data from 104 079 vaginal deliveries were summarized.
- •Postpartum hemorrhage incidence was 15.2% (QBL >500 mL) and 1.0% (>1500 mL)
- •V-drape volumetric contribution to total QBL was 60.6±26.3% of the total QBL.
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