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Table 4 Total blood loss and total units of transfused packed red blood cells in women with persistent postpartum haemorrhage, compared with women with different cut-off values for estimations of blood loss and transfused packed red blood cells (RBC) within 24 h following birth

From: Clinical characteristics of women captured by extending the definition of severe postpartum haemorrhage with ‘refractoriness to treatment’: a cohort study

Definition based on Total blood loss (L) Time from birth till end of bleeding (hours) Total units of transfused RBCs Time from birth till transfusion of first RBC-unit (hours)
Median (interquartile range)
 Persistent postpartum haemorrhage (N = 1260) 3.0 (2.5–4.0) 3.4 (2.1–5.9) 4 (3–6) 2.5 (1.6–4.2)
 Estimated blood loss
  ≥ 1000 mL (N = 1391) 3.0 (2.5–4.0) 3.3 (2.0–5.8) 4 (3–6) 2.5 (1.5–4.2)
  ≥ 1500 mL (N = 1344) 3.0 (2.5–4.0) 3.3 (2.0–5.8) 4 (3–6) 2.5 (1.5–4.2)
  ≥ 2000 mL (N = 1252) 3.0 (2.5–4.0) 3.4 (2.1–5.9) 4 (3–6) 2.4 (1.5–4.1)
  ≥ 2500 mL (N = 1050) 3.5 (3.0–4.2) 3.6 (2.1–6.1) 4 (3–6) 2.3 (1.5–3.8)
 Transfusion of packed red blood cells
  ≥ 4 units (N = 845) 3.5 (2.7–4.5) 3.8 (2.2–6.4) 5 (4–7) 2.3 (1.4–3.7)
  ≥ 6 units (N = 325) 4.8 (3.6–6.5) 6.5 (3.1–8.6) 8 (6–12) 2.0 (1.0–3.3)
  ≥ 8 units (N = 176) 6.0 (4.5–8.0) 6.1 (4.1–12.0) 11 (9–15) 1.9 (0.8–3.3)
  ≥ 10 units (N = 115) 7.0 (5.1–9.8) 6.9 (4.4–12.8) 13 (11–18) 1.8 (0.7–3.0)