A 58-year-old man with a known left inguinal hernia for 3 years presents to the emergency department with acute onset severe left lower abdominal pain, vomiting, and abdominal distension for 6 hours. He reports the hernia had become irreducible 2 hours ago. On examination, the left inguinal swelling is tense, tender, and non-reducible. Bowel sounds are absent. Abdominal X-ray shows dilated small bowel loops with air-fluid levels. His blood pressure is 100/65 mmHg, heart rate 110/min, temperature 38.2°C. What is the most appropriate immediate management?

Question

Accepted Answer

B. Nasogastric decompression, IV fluids, and emergency surgical exploration with bowel resection if needed. ## Clinical Diagnosis

**Key Point:** This patient has an acutely strangulated inguinal hernia with signs of bowel obstruction and systemic toxicity (fever, tachycardia, hypotension).

The clinical triad of strangulation includes:
1. Irreducibility
2. Severe pain (not just discomfort)
3. Signs of obstruction (vomiting, distension, absent bowel sounds)

## Pathophysiology of Strangulation

**High-Yield:** Strangulation occurs when hernia contents are compressed, compromising blood supply. This leads to:
- Ischemia of trapped bowel
- Bacterial translocation
- Peritonitis and sepsis
- Risk of perforation if delayed

## Management Algorithm

```mermaid
flowchart TD
  A[Irreducible hernia with obstruction signs]:::outcome --> B{Fever, shock, peritonitis?}:::decision
  B -->|Yes| C[Strangulation likely]:::urgent
  C --> D[Resuscitate: IV fluids, NG tube, antibiotics]:::action
  D --> E[Emergency surgery]:::action
  E --> F{Bowel viable?}:::decision
  F -->|Yes| G[Hernia repair only]:::action
  F -->|No| H[Resection + anastomosis + repair]:::action
  B -->|No| I[Observe, may attempt reduction]:::action
```

## Why Emergency Surgery is Mandatory

**Clinical Pearl:** The presence of fever (38.2°C), tachycardia (110/min), hypotension (100/65), and absent bowel sounds indicates transmural ischemia and impending perforation. Delay increases mortality from 5% (early surgery) to >30% (delayed >24 hours).

**Mnemonic — Signs of Strangulation: PAIN**
- **P**ersistent severe pain (not relieved by position change)
- **A**bsent bowel sounds
- **I**rreducibility
- **N**ausea/vomiting with obstruction signs

## Intraoperative Findings & Decisions

| Finding | Management |
|---------|-------------|
| Viable bowel (pink, peristalsis, bleeding edges) | Hernia repair alone |
| Questionable viability | Warm saline soak × 5 min, reassess; if still grey → resect |
| Non-viable (black, perforated, friable) | Resection + primary anastomosis + hernia repair |

**Warning:** Manual reduction under sedation (option D) is contraindicated in strangulation—you may reduce gangrenous bowel back into the abdomen, causing peritonitis and septic shock.

**High-Yield:** Antibiotics (broad-spectrum covering gram-negatives and anaerobes) should be given immediately as part of resuscitation, not after diagnosis confirmation.

Answer

A. Urgent CT abdomen with IV contrast to assess bowel viability, then conservative management

Answer

C. Nasogastric decompression, IV fluids, and observation for 24 hours with planned elective hernia repair

Answer

D. Immediate manual reduction under sedation followed by elective hernia repair in 2 weeks

Explanation

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