According to ACOG reVITALize criteria, postpartum hemorrhage is defined as cumulative blood loss of 1000 mL or more OR blood loss accompanied by signs of hypovolemia within 24 hours of birth. For cesarean delivery, the threshold is:
- A 500 mL
- B 750 mL
- C 1000 mL ✓
- D 1500 mL
Correct answer: C. 1000 mL
Explanation
ACOG defines PPH as cumulative blood loss of 1000 mL or more, OR blood loss accompanied by signs or symptoms of hypovolemia within 24 hours of delivery. The same 1000 mL threshold applies to both vaginal and cesarean deliveries, though blood loss at cesarean is often underestimated clinically.
Reference: ACOG Practice Bulletin No. 183: Postpartum Hemorrhage, 2017 (reaffirmed 2022) ed.
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Written and medically reviewed by the StethoPrep medical team.