A 58-year-old man with type 2 diabetes mellitus (on metformin and insulin) and gastroesophageal reflux disease (GERD) is scheduled for emergency repair of a perforated duodenal ulcer. He consumed a full meal (rice, curry, and milk) at 22:00 hours the previous night. Surgery is scheduled at 08:00 AM the next morning (10 hours after food intake). On pre-anesthetic evaluation, he complains of epigastric discomfort and has a history of delayed gastric emptying. What is the most appropriate fasting status and pre-anesthetic management?

Explanation

## Emergency Surgery & High-Risk Fasting — Modified Aspiration Precautions **Key Point:** In emergency surgery with recent food intake, the fasting interval alone does NOT guarantee an empty stomach if risk factors for delayed gastric emptying are present. Clinical judgment and additional prophylaxis are mandatory. ### Risk Factors for Delayed Gastric Emptying | Factor | Mechanism | Relevance in This Case | |---|---|---| | **Diabetes mellitus** | Autonomic neuropathy impairs gastric motility | Present (type 2 DM) | | **GERD** | Increased gastric pressure and reflux | Present | | **Acute abdominal pathology** | Ileus from peritonitis/perforation | Present (perforated ulcer) | | **Fatty/milk-containing meal** | Prolonged gastric emptying time | Present (curry + milk) | | **Opioid use** | Decreases gastric motility | Not mentioned, but consider | **High-Yield:** The presence of **even one** major risk factor for delayed gastric emptying in an emergency case mandates: 1. **Gastric aspiration** (via nasogastric tube) to reduce gastric volume 2. **Acid prophylaxis** (H₂-blocker or PPI) to reduce gastric acidity 3. **Rapid sequence intubation (RSI)** with cricoid pressure ### Pre-anesthetic Management in This Patient ```mermaid flowchart TD A[Emergency surgery + Recent food intake]:::outcome --> B{Risk factors for<br/>delayed gastric emptying?}:::decision B -->|Yes: DM, GERD, acute abdomen| C[High aspiration risk]:::urgent C --> D[Gastric aspiration via NGT]:::action C --> E[Acid prophylaxis:<br/>H₂-blocker or PPI]:::action C --> F[Rapid sequence intubation<br/>with cricoid pressure]:::action D --> G[Proceed to emergency surgery]:::outcome E --> G F --> G B -->|No risk factors| H[Standard fasting clearance]:::outcome ``` **Clinical Pearl:** Metoclopramide (option 3) is a useful adjunct to enhance gastric emptying in elective cases with mild risk factors, but in **emergency surgery with acute peritonitis**, the stomach is already paralyzed by ileus—metoclopramide alone is insufficient. Gastric aspiration is the only reliable way to reduce gastric volume acutely. **Warning:** Do NOT assume that 10 hours of fasting is protective in the presence of delayed gastric emptying. Aspiration pneumonitis risk remains high, and this patient requires RSI with full precautions.