Consideration of blood loss at delivery as percentage of estimated blood volume.
It is recommended that blood loss at delivery be evaluated in terms of percentage of estimated blood volume rather than in terms of volume only. Estimated blood volume in milliliters per kilogram may be calculated by the following formula: (formula: see text). It is recommended that postpartum hemorrhage be defined as a loss of blood at delivery of greater than 15% of the total estimated blood volume.
D001810:Blood Volume; D036861:Delivery, Obstetric; D005260:Female; D006400:Hematocrit; D006801:Humans; D008722:Methods; D006473:Postpartum Hemorrhage / Q000175:diagnosis*; D011247:Pregnancy