A 58-year-old man with a known left inguinal hernia for 2 years presents to the emergency department with sudden onset severe left lower abdominal pain, vomiting, and abdominal distension for 6 hours. On examination, he is febrile (38.5°C), tachycardic (110/min), and has a tender, irreducible left inguinal swelling that is warm to touch and erythematous. Bowel sounds are absent. Plain abdominal X-ray shows multiple air-fluid levels and dilated small bowel loops. What is the most appropriate immediate management?

Explanation

## Clinical Diagnosis: Strangulated Inguinal Hernia with Bowel Obstruction **Key Point:** The clinical triad of irreducibility, local signs of inflammation (warmth, erythema, tenderness), and acute bowel obstruction (absent bowel sounds, air-fluid levels) constitutes a surgical emergency. **High-Yield:** Strangulation is a time-critical complication; delay in surgery increases morbidity and mortality due to bowel necrosis and sepsis. The presence of fever and systemic toxicity (tachycardia) indicates ischemic bowel and possible perforation. ### Why Immediate Surgery is Mandatory | Feature | Incarceration | Strangulation | |---------|---------------|---------------| | Irreducibility | Yes | Yes | | Local inflammation | No | **Yes** (warmth, erythema) | | Systemic toxicity | Absent/mild | **Present** (fever, tachycardia) | | Bowel viability | Intact | **Compromised** | | Time to surgery | Elective | **Emergent** | **Clinical Pearl:** The presence of fever, erythema over the hernia, and absent bowel sounds distinguishes strangulation from simple incarceration. These are signs of transmural ischemia and impending perforation. ### Management Algorithm ```mermaid flowchart TD A[Irreducible hernia + acute pain]:::outcome --> B{Signs of strangulation?}:::decision B -->|Yes: fever, erythema, toxicity| C[Strangulated hernia]:::urgent B -->|No: local swelling only| D[Incarcerated hernia]:::outcome C --> E[Immediate resuscitation]:::action E --> F[NGT, IV fluids, antibiotics]:::action F --> G[Urgent surgical exploration]:::action G --> H{Bowel viability?}:::decision H -->|Viable| I[Hernia repair]:::action H -->|Necrotic| J[Resection + repair]:::action D --> K[Attempt reduction if no signs of strangulation]:::action K --> L{Reduction successful?}:::decision L -->|Yes| M[Elective repair within 1-2 weeks]:::action L -->|No| N[Urgent surgery]:::action ``` **Mnemonic: STRANGULATION = **S**ystemic toxicity + **T**ime-critical + **R**ed flags (fever, erythema) + **A**cute obstruction + **N**ecrosis risk + **G**urgency of surgery + **U**rgent resuscitation + **L**oss of bowel viability + **A**ntibiotics + **T**reatment: surgery + **I**rreducibility + **O**bstruction + **N**on-operative management contraindicated** **Warning:** Manual reduction under sedation is contraindicated in strangulation because: 1. You may reduce necrotic bowel back into the abdomen → perforation and peritonitis 2. It delays definitive surgical assessment of bowel viability 3. Systemic signs (fever, toxicity) indicate transmural ischemia — not a candidate for conservative management **Tip:** In NEET PG, any hernia with fever + erythema + irreducibility + obstruction = **STRANGULATION = EMERGENCY SURGERY**. Do not delay for imaging or trial reduction.