A G3P3 patient has estimated blood loss of 1200 mL after vaginal delivery with uterine atony. After IV oxytocin 20 units, uterus remains boggy. What is the stepwise approach: misoprostol, carboprost, tranexamic acid, bimanual compression, Bakri balloon, B-Lynch suture, uterine artery ligation, and finally hysterectomy? What are contraindications to carboprost (15-methyl PGF2a)? When do we activate massive transfusion protocol?
This is primary postpartum hemorrhage (PPH) due to uterine atony (>1000 mL after vaginal delivery). Management should be rapid, stepwise, and concurrent. Initial measures: call for help, large-bore IV access, start fluids, send labs, and uterine massage with bimanual compression. Continue/optimize oxytocin infusion. Uterotonics (sequential/add-on): β Misoprostol (e.g., 800β1000 Β΅g PR/SL) β Carboprost (15-methyl PGF2Ξ±) 250 Β΅g IM, repeat q15β20 min (max 2 mg) β Consider methylergometrine if no hypertension Tranexamic acid (TXA): 1 g IV early (within 3 hours); repeat 1 g if bleeding continues after 30 min or recurs within 24 h. If bleeding persists: β Uterine tamponade (e.g., Bakri balloon) β Surgical measures: compression sutures (B-Lynch), uterine/utero-ovarian artery ligation, stepwise devascularization β Definitive: hysterectomy if refractory or patient unstable Contraindications to carboprost: β Asthma (risk of bronchospasm) β Relative: significant cardiac, pulmonary, renal, or hepatic disease Massive transfusion protocol (MTP): Activate early with ongoing hemorrhage with hemodynamic instability, need for β₯4 units PRBCs within 1 hour, or anticipated β₯10 units in 24 hours. Use balanced resuscitation (β1:1:1 PRBC:FFP:platelets) with fibrinogen replacement as needed. Conclusion: Escalate promptly from uterotonics to tamponade and surgery while initiating TXA early and activating MTP without delay in unstable or ongoing heavy bleeding
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