A 32-year-old multigravida (G3P2) undergoes emergency cesarean section at 38 weeks for placenta previa. Intraoperatively, the placenta is noted to be morbidly adherent to the lower uterine segment with invasion into the myometrium. After delivery of the baby and placenta, brisk bleeding from the placental bed persists despite oxytocin 10 IU IV, ergot alkaloid, and uterine massage. The anesthesiologist reports blood loss of 1800 mL in 20 minutes. BP is 88/54 mmHg, HR 128/min, CVP 2 cm H₂O. What is the most appropriate next step in management?

Explanation

## Management of Morbidly Adherent Placenta with Uncontrolled PPH ### Clinical Context: Placenta Increta **Key Point:** Morbidly adherent placenta (placenta increta/percreta) with invasion into the myometrium is a surgical emergency. When bleeding persists despite medical management, hysterectomy is the definitive treatment [cite:ACOG Practice Bulletin 76]. This case demonstrates: - **Massive acute hemorrhage** (1800 mL in 20 minutes) - **Hemodynamic instability** (BP 88/54, HR 128, CVP 2 — signs of hypovolemic shock) - **Failed medical management** (oxytocin, ergot, massage ineffective) - **Preoperative diagnosis** of placental invasion (morbidly adherent placenta) ### Why Hysterectomy Is Indicated ```mermaid flowchart TD A[Placenta increta/percreta diagnosed]:::outcome --> B[Deliver baby and placenta]:::action B --> C[Assess bleeding]:::decision C -->|Controlled| D[Observe, transfuse as needed]:::action C -->|Uncontrolled| E[Activate massive transfusion protocol]:::action E --> F[Attempt uterine compression sutures]:::action F --> G{Bleeding controlled?}:::decision G -->|Yes| H[Observe with ICU monitoring]:::action G -->|No| I[Proceed to hysterectomy]:::urgent I --> J[Peripartum hysterectomy]:::action J --> K[Definitive hemostasis]:::outcome ``` **High-Yield:** In placenta increta/percreta, the placenta invades the myometrium and cannot be safely separated. Attempting to remove it increases bleeding. Hysterectomy is the only definitive treatment when bleeding is uncontrolled. ### Rationale for Correct Answer | Finding | Significance | |---------|-------------| | **Morbidly adherent placenta** | Placental tissue invades myometrium — cannot be removed without massive hemorrhage | | **1800 mL blood loss in 20 min** | Massive hemorrhage rate; patient in Class III–IV shock | | **BP 88/54, HR 128** | Hemodynamic instability; compensatory tachycardia | | **CVP 2 cm H₂O** | Severe hypovolemia; inadequate intravascular volume | | **Failed medical management** | Oxytocin, ergot, massage have not controlled bleeding | **Clinical Pearl:** Peripartum hysterectomy is a life-saving procedure in morbidly adherent placenta. It should be performed urgently when bleeding cannot be controlled by conservative measures. Delay increases maternal mortality risk. ### Massive Transfusion Protocol 1. **Activate protocol immediately** — notify blood bank for uncrossmatched O-negative RBCs 2. **Transfuse in 1:1:1 ratio** — RBCs : FFP : platelets (to prevent coagulopathy) 3. **Correct coagulopathy** — monitor PT, aPTT, fibrinogen, platelet count 4. **Consider cell salvage** — intraoperative blood recovery if available 5. **Prepare for DIC** — monitor fibrinogen, D-dimer, PT/aPTT trends