A 28-year-old woman presents to the emergency department with acute lower abdominal pain and vaginal bleeding for 2 days. She reports a missed period 6 weeks ago. On examination, she is pale, tachycardic (HR 110/min), and has severe left-sided lower abdominal tenderness with guarding. Serum β-hCG is 8,500 mIU/mL. Transvaginal ultrasound shows an empty uterus with free fluid in the pouch of Douglas. What is the most appropriate immediate management?

Explanation

## Clinical Presentation Analysis This patient presents with **hemodynamic instability** (tachycardia, pallor) and **signs of acute intra-abdominal hemorrhage** (severe tenderness, guarding, free fluid on ultrasound), indicating a **ruptured ectopic pregnancy**. ### Key Diagnostic Features | Feature | Finding | Significance | |---------|---------|---------------| | β-hCG level | 8,500 mIU/mL | Confirms pregnancy; high level suggests advanced gestation | | Ultrasound findings | Empty uterus + free fluid | Confirms ectopic location; free fluid = rupture | | Hemodynamic status | HR 110, pale | Signs of hemorrhagic shock | | Clinical signs | Severe tenderness, guarding | Peritoneal irritation from bleeding | ### Management Algorithm ```mermaid flowchart TD A[Ectopic pregnancy diagnosed]:::outcome --> B{Hemodynamically stable?}:::decision B -->|No - signs of rupture| C[Emergency surgery]:::urgent C --> D[Laparotomy + salpingectomy]:::action B -->|Yes - unruptured| E{β-hCG < 5000 & no contraindications?}:::decision E -->|Yes| F[Medical management: Methotrexate]:::action E -->|No| G[Laparoscopic salpingostomy]:::action ``` **Key Point:** Ruptured ectopic pregnancy is a **surgical emergency**. Hemodynamic instability, free fluid on imaging, and signs of peritonitis mandate immediate **laparotomy** (not laparoscopy, which is slower in unstable patients). **Clinical Pearl:** Salpingectomy (removal of tube) is preferred over salpingostomy (tube-preserving) in emergency rupture because: - Faster procedure in unstable patient - Recurrent ectopic risk is ~15–20% regardless of technique - Fertility outcomes are similar with one patent tube **High-Yield:** The **three management options** for ectopic pregnancy are: 1. **Medical (Methotrexate):** unruptured, stable, β-hCG <5,000, no contraindications 2. **Laparoscopic surgery:** unruptured, stable, β-hCG >5,000 OR patient preference 3. **Laparotomy + salpingectomy:** **ruptured or hemodynamically unstable** (this case) **Warning:** Do NOT delay surgery for imaging or further testing in a hemodynamically unstable patient with suspected rupture. Clinical judgment + β-hCG + free fluid on ultrasound are sufficient.