A 38-year-old woman from Mumbai presents to the emergency department with acute onset severe pain in the left groin. On examination, there is a firm, tender, irreducible swelling above and lateral to the pubic tubercle. The overlying skin is erythematous. She reports nausea and has vomited once. Abdominal examination reveals mild distension. What is the most appropriate immediate next step in management?

Explanation

## Clinical Diagnosis: Incarcerated/Strangulated Indirect Inguinal Hernia This patient presents with **classic features of a strangulated hernia**: - **Location:** Above and lateral to pubic tubercle → **indirect inguinal hernia** (lateral to Hesselbach's triangle) - **Acute onset severe pain** with irreducibility - **Systemic signs:** Erythema, nausea, vomiting - **Abdominal signs:** Mild distension (suggests bowel obstruction) ## Pathophysiology of Strangulation **Key Point:** Strangulation occurs when a hernia sac contents become trapped with compromised blood supply, leading to: 1. Venous congestion → edema → increased pressure 2. Arterial compromise → ischemia 3. Bowel necrosis and perforation if untreated **High-Yield:** Strangulated hernia is a **surgical emergency** with risk of: - Bowel necrosis (within 6–8 hours of complete arterial occlusion) - Peritonitis and sepsis - Mortality if delayed >24 hours ## Management Algorithm for Strangulated Hernia ```mermaid flowchart TD A["Acute groin pain + irreducible swelling + systemic signs"]:::outcome A --> B{"Strangulation suspected?"}:::decision B -->|Yes: severe pain, erythema, vomiting| C["Immediate surgical exploration"]:::urgent B -->|No: mild symptoms, reducible| D["Attempt gentle reduction"]:::action D --> E{"Reduced?"}:::decision E -->|Yes| F["Observe, then elective repair"]:::action E -->|No| C C --> G["Emergency hernia repair + assess bowel viability"]:::action G --> H{"Bowel viable?"}:::decision H -->|Yes| I["Primary repair"]:::outcome H -->|No| J["Resection + repair"]:::outcome ``` **Clinical Pearl:** The **golden period** for strangulated hernia is within 6–8 hours of symptom onset. Delay beyond this increases risk of irreversible ischemia and mortality. This patient's acute presentation with erythema and vomiting mandates **immediate surgery without delay for imaging**. ## Why Imaging Is Not the Next Step | Imaging | Why NOT first | |---------|---------------| | **Ultrasound** | Delays definitive treatment; diagnosis is clinical; does not change acute management | | **CT abdomen** | Time-consuming; delays surgery; not indicated when clinical diagnosis is clear | **Mnemonic:** **STRANG** — **S**evere pain, **T**ender irreducible swelling, **R**ed skin, **A**cute onset, **N**ausea/vomiting, **G**o to OR immediately. ## Why Other Options Are Incorrect - **Watchful waiting:** Contraindicated in strangulated hernia; delay leads to bowel necrosis, sepsis, and death. This is a surgical emergency. - **Ultrasound first:** While ultrasound can confirm hernia type, it delays definitive treatment in a time-critical emergency. Clinical diagnosis is sufficient to proceed to surgery. - **CT abdomen:** Unnecessary imaging that delays surgery. CT does not change management in acute strangulation and increases morbidity/mortality risk.