A 28-year-old man presents with acute onset severe pain in the right groin with a tense, irreducible swelling. He reports a history of a painless groin swelling for 2 years that he had ignored. On examination, the swelling is tender, firm, and non-transilluminant. The overlying skin shows erythema. His temperature is 37.8°C. What is the most appropriate immediate management?

Explanation

## Strangulated Inguinal Hernia: Emergency Surgical Management ### Clinical Diagnosis: Strangulation **Key Point:** This patient has a **strangulated inguinal hernia** — a surgical emergency requiring immediate operative intervention. ### Red Flags for Strangulation | Sign/Symptom | Significance | |--------------|-------------| | **Acute onset severe pain** | Indicates compromised blood supply to hernia contents | | **Irreducible swelling** | Cannot be manually returned to abdomen | | **Tense, firm consistency** | Suggests bowel edema and ischemia | | **Erythema of overlying skin** | Local inflammation from tissue necrosis | | **Low-grade fever (37.8°C)** | Systemic response to ischemic bowel | | **History of chronic asymptomatic hernia** | Risk factor for acute strangulation | ### Pathophysiology of Strangulation ```mermaid flowchart TD A[Hernia sac with bowel loop]:::outcome --> B[Hernia neck constricts blood vessels]:::action B --> C[Venous obstruction > Arterial obstruction]:::action C --> D[Bowel edema and congestion]:::outcome D --> E{Time elapsed?}:::decision E -->|< 6 hours| F[Reversible ischemia]:::outcome E -->|6-12 hours| G[Partial thickness necrosis]:::outcome E -->|> 12 hours| H[Full thickness necrosis + perforation]:::urgent H --> I[Peritonitis and sepsis]:::urgent ``` ### Why Immediate Surgery is Mandatory **High-Yield:** Strangulated hernia is a **surgical emergency**. Every hour of delay increases the risk of bowel necrosis, perforation, and mortality. The mortality rate increases from ~5% with early intervention to >30% if surgery is delayed >24 hours. 1. **Irreducibility:** Manual reduction is contraindicated because: - Risk of reducing gangrenous bowel back into the abdomen (Richter hernia complication). - May cause perforation of necrotic bowel. - Does not address the underlying vascular compromise. 2. **Tissue damage:** Ischemic bowel begins to necrose within 6–12 hours. Waiting for antibiotics or observation allows progression to transmural necrosis and perforation. 3. **Operative goal:** Immediate surgical exploration to: - Divide the constricting hernia neck. - Assess viability of hernia contents (bowel, omentum). - Resect non-viable bowel if necessary. - Repair the hernia defect. **Clinical Pearl:** In a strangulated hernia, the **golden period is 6 hours**. Beyond this, the risk of bowel necrosis and need for resection increases significantly. **Mnemonic: STRANGULATION REQUIRES IMMEDIATE SURGERY — Do NOT delay or attempt reduction** [cite:Sabiston Textbook of Surgery 21e Ch 43]