In the management of atonic PPH not responding to oxytocin 40 units IV infusion and ergometrine 0.25 mg IM, the next pharmacological step according to WHO and FIGO guidelines is:

• A Carboprost (15-methyl PGF2α) 0.25 mg IM every 15 minutes up to 8 doses
• B Tranexamic acid 1 g IV over 10 minutes, given within 3 hours of onset ✓
• C Misoprostol 800 mcg sublingually as second-line uterotonic
• D Recombinant factor VIIa as early haemostatic adjunct

Explanation

The WHO and FIGO guidelines (updated 2022) recommend tranexamic acid (TXA) 1 g IV within 3 hours of PPH diagnosis as part of the first-line bundle alongside uterotonics — it reduces PPH mortality by approximately 31% in the WOMAN trial when given early. The WOMAN trial demonstrated that TXA given within 3 hours of delivery significantly reduces death from hemorrhage. While carboprost (A) is a valid third-line uterotonic (contraindicated in asthma), current guidelines prioritize TXA as a hemostatic adjunct before or concurrent with escalating uterotonics. Misoprostol (C) is second-line uterotonic (WHO bundle) but not the most critical next step when oxytocin + ergometrine have failed. rFVIIa (D) is a last resort, expensive option.

Reference: Williams Obstetrics, 26th ed.

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Written and medically reviewed by the StethoPrep medical team.