Management of Postpartum Hemorrhage
The management of postpartum hemorrhage (PPH) should include early administration of intravenous tranexamic acid (within 3 hours of birth) at a dose of 1g over 10 minutes, alongside oxytocin administration (5-10 IU IV/IM) and other standard measures to reduce maternal morbidity and mortality. 1, 2
Definition and Diagnosis
- PPH is defined as blood loss of more than 500 mL after vaginal birth or 1000 mL after caesarean section, or any blood loss sufficient to compromise hemodynamic stability 2
- PPH is the leading cause of maternal mortality globally, with most deaths occurring within the first 24 hours after birth 2
First-Line Management
Oxytocin administration: 5-10 IU slow IV or intramuscular infusion immediately postpartum to reduce PPH incidence 1
- For IV administration: 10 IU diluted in 1000 mL of non-hydrating solution (creating a 10 mU/mL solution) 3
- For control of postpartum bleeding: 10-40 units may be added to 1000 mL of non-hydrating diluent and run at a rate necessary to control uterine atony 3
- IV route is more effective than IM for PPH prevention 4, 5
Tranexamic acid: Administer 1g IV over 10 minutes (100 mg/mL at 1 mL/min) within 3 hours of birth 1, 2
- A second dose of 1g should be given if bleeding continues after 30 minutes or restarts within 24 hours 2
- Must be administered within 3 hours of birth, as delay reduces benefit by approximately 10% for every 15 minutes 2
- Should not be given beyond 3 hours after birth as it may be potentially harmful 2, 6
Additional Management Measures
- Fluid replacement: Initiate IV fluid resuscitation with physiologic electrolyte solutions 1, 2
- Continuous monitoring: Monitor vital signs, uterine tone, and blood loss 2
- Non-surgical interventions:
Second-Line Management
Additional uterotonics if bleeding persists:
- Carboprost tromethamine (prostaglandin F2α): Indicated for treatment of PPH due to uterine atony that has not responded to conventional management including oxytocin 7
- Methylergonovine: Can be used for control of uterine hemorrhage, but is contraindicated in patients with hypertension due to risk of vasoconstriction 1, 8
Manual removal of placenta: Should not be routinely performed except in cases of severe and uncontrollable PPH 1
Surgical Interventions (When Necessary)
- Implement in a stepwise approach if medical management fails 2:
Special Considerations
- Sequential use of interventions should start with less invasive approaches, moving toward more invasive interventions as required 2
- In women with mechanical heart valves on anticoagulation, careful planning of delivery is essential to minimize bleeding risk 1
- Prostaglandin F analogues are useful to treat PPH unless an increase in pulmonary artery pressure is undesirable 1
- Methylergonovine is contraindicated in patients with hypertension due to risk of vasoconstriction and hypertension (>10% risk) 1