A 58-year-old man with a long-standing left inguinal hernia presents to the emergency department with acute onset severe left groin pain, vomiting, and abdominal distension for 6 hours. On examination, the hernia is tender, tense, and irreducible. Abdominal examination reveals distension with hyperactive bowel sounds. Plain abdominal X-ray shows small bowel loops with air-fluid levels. What is the most appropriate immediate management?

Explanation

## Clinical Diagnosis **Key Point:** This patient has an acutely strangulated inguinal hernia with signs of small bowel obstruction — a surgical emergency requiring immediate operative intervention. ### Clinical Features Supporting Strangulation | Feature | Significance | |---------|-------------| | Irreducible, tense hernia | Loss of blood supply to hernia contents | | Severe pain (not just discomfort) | Ischemia of bowel wall | | Vomiting + abdominal distension | Complete bowel obstruction | | Air-fluid levels on X-ray | Mechanical small bowel obstruction | | Hyperactive bowel sounds initially | Proximal bowel attempting to overcome obstruction | ### Pathophysiology of Strangulation 1. Hernia becomes irreducible due to edema or adhesions 2. Venous return is compromised → bowel wall edema worsens 3. Arterial supply becomes compromised → ischemia 4. Transmural necrosis occurs within 6–12 hours 5. Perforation and peritonitis follow if untreated **High-Yield:** Strangulation is a **time-dependent surgical emergency**. Mortality increases significantly after 6 hours of ischemia. ### Management Algorithm ```mermaid flowchart TD A[Acute irreducible hernia with signs of obstruction]:::outcome --> B{Signs of strangulation?}:::decision B -->|Yes: severe pain, tense hernia, obstruction| C[Resuscitate: IV fluids, NG tube]:::action C --> D[Emergency surgical exploration]:::urgent D --> E{Bowel viability?}:::decision E -->|Viable| F[Hernia repair]:::action E -->|Non-viable| G[Resection + repair]:::action B -->|No: painless, reducible| H[Elective repair within days]:::action ``` **Clinical Pearl:** Taxis (manual reduction) is **contraindicated** in suspected strangulation because: - It may reduce gangrenous bowel into the abdomen → contamination - It delays definitive surgical treatment - It provides false reassurance **Warning:** Do NOT delay surgery for imaging. Plain X-ray confirms obstruction; CT adds no diagnostic value in a clinically obvious strangulated hernia and wastes critical time. ## Correct Answer Justification Immediate management includes: 1. **Nasogastric decompression** — relieves vomiting, prevents aspiration, decompresses proximal bowel 2. **IV fluid resuscitation** — corrects hypovolemia from third-spacing and vomiting 3. **Emergency hernia repair** — the only definitive treatment; bowel viability must be assessed and non-viable segments resected [cite:Sabiston 21e Ch 44]