A 48-year-old man from Mumbai presents to the emergency department with acute onset severe pain in the right groin for 4 hours. On examination, he has a tender, irreducible, tense swelling in the right inguinal region. He is nauseated and has mild abdominal distension. Bowel sounds are present. What is the most appropriate immediate next step in management?

Explanation

## Clinical Diagnosis: Incarcerated Inguinal Hernia This patient has **acute incarceration** — the hernia contents (likely bowel) are trapped and cannot reduce. The key red flags are: - Acute onset severe pain - Irreducible, tense swelling - Nausea and abdominal distension - Risk of **strangulation** (vascular compromise) if not relieved urgently ## Incarceration vs. Strangulation | Feature | Incarcerated | Strangulated | |---------|--------------|---------------| | **Definition** | Hernia contents trapped, cannot reduce | Vascular compromise of trapped contents | | **Onset** | Acute | Acute (within hours) | | **Pain** | Severe, constant | Severe, colicky | | **Reduction** | Impossible | Impossible | | **Bowel sounds** | Present | Absent/diminished | | **Systemic signs** | Nausea, vomiting | Fever, tachycardia, peritonitis | | **Management** | Urgent surgery | **Emergency surgery** | | **Prognosis** | Good if repaired early | Poor; high mortality if delayed | ## Management Algorithm ```mermaid flowchart TD A[Acute groin pain + irreducible hernia]:::outcome --> B{Signs of strangulation?}:::decision B -->|Yes: fever, peritonitis, absent bowel sounds| C[Emergency surgery immediately]:::urgent B -->|No: nausea, present bowel sounds| D[Incarceration without strangulation]:::outcome D --> E[Urgent surgery within 1-2 hours]:::action E --> F[IV access, fluids, antibiotics]:::action F --> G[Surgical exploration under GA]:::action G --> H{Bowel viable?}:::decision H -->|Yes| I[Reduce hernia, repair]:::action H -->|No| J[Resect non-viable bowel, repair]:::action ``` ## Key Point: **Incarcerated hernias require urgent surgical intervention.** Delayed surgery risks progression to strangulation, bowel necrosis, sepsis, and death. Manual reduction is contraindicated — it may perforate compromised bowel. ## High-Yield: - **Incarceration = surgical emergency** (within 1–2 hours) - **Strangulation = surgical emergency** (immediate, within minutes) - **Do NOT attempt manual reduction** in acute incarceration - **Imaging is NOT required** if clinical diagnosis is clear; it delays definitive treatment - **Preoperative resuscitation**: IV fluids, antibiotics, analgesia, but do not delay surgery ## Clinical Pearl: The risk of bowel necrosis in incarcerated hernia increases dramatically after 6–8 hours. Mortality rises from <1% if repaired within 6 hours to >30% if strangulation with perforation occurs. ## Warning: ~~Manual reduction~~ is a common mistake. Attempting to push back potentially ischaemic bowel risks perforation, peritonitis, and death. Surgery is the only safe option. [cite:Sabiston Textbook of Surgery 21e Ch 43]