A 58-year-old man with a known left inguinal hernia presents to the emergency department with acute onset severe left lower abdominal pain and vomiting for 6 hours. On examination, he is diaphoretic, BP 100/65 mmHg, HR 118/min. The left inguinal swelling is tense, tender, and irreducible. Abdominal examination reveals guarding and rigidity in the left lower quadrant. Plain abdominal X-ray shows multiple dilated small bowel loops with air-fluid levels. What is the most appropriate immediate management?

Explanation

## Clinical Diagnosis **Key Point:** This patient has an **incarcerated inguinal hernia with strangulation**, evidenced by acute severe pain, irreducibility, signs of peritonitis (guarding, rigidity), hemodynamic compromise (tachycardia, borderline hypotension), and imaging findings of small bowel obstruction. ## Pathophysiology of Strangulation 1. Incarceration → increased tension on hernia contents 2. Vascular compromise → ischemia of bowel wall 3. Mucosal necrosis → bacterial translocation and peritonitis 4. Full-thickness perforation → septic shock if untreated **High-Yield:** Strangulation is a **surgical emergency**. Unlike simple obstruction, strangulated bowel has a time-dependent risk of perforation and mortality (up to 30% if delayed >24 hours). ## Management Algorithm ```mermaid flowchart TD A[Incarcerated hernia]:::outcome --> B{Signs of strangulation?}:::decision B -->|Yes: severe pain, peritonitis,<br/>hemodynamic changes| C[Urgent surgical exploration]:::urgent B -->|No: mild pain, no peritonitis| D[Try manual reduction<br/>under anesthesia]:::action C --> E{Bowel viable?}:::decision E -->|Yes| F[Hernia repair]:::action E -->|No| G[Bowel resection +<br/>hernia repair]:::action D --> H{Reduction successful?}:::decision H -->|Yes| I[Elective repair in 1-2 weeks]:::action H -->|No| C ``` ## Immediate Steps 1. **Resuscitation:** IV fluids, electrolyte correction, nasogastric tube for decompression 2. **Antibiotics:** Broad-spectrum (cefotaxime + metronidazole or piperacillin-tazobactam) to cover gram-negatives and anaerobes 3. **Urgent surgical exploration:** Do NOT attempt manual reduction in strangulated hernia (risk of reducing gangrenous bowel into abdomen) 4. **Intraoperative assessment:** Determine bowel viability; resect if necrotic **Clinical Pearl:** The presence of **peritoneal signs (guarding, rigidity)** is a red flag for transmural ischemia and mandates immediate surgery without delay for further imaging. **Warning:** Manual reduction of a strangulated hernia can reduce gangrenous bowel back into the peritoneal cavity, causing peritonitis and sepsis — a catastrophic complication.