A 48-year-old man with type 2 diabetes mellitus is scheduled for emergency repair of a perforated duodenal ulcer. He had a full meal (rice, dal, and meat curry) at 20:00 the previous night. He presents to the emergency department at 06:00 AM with acute peritonitis. His blood glucose is 280 mg/dL. The anesthetist must decide on the timing of induction. According to fasting guidelines and emergency protocols, what is the most appropriate management regarding pre-operative fasting?

Explanation

## Emergency Surgery and Fasting Guidelines **Key Point:** In emergency/life-threatening situations, the risk of the underlying condition outweighs the aspiration risk from inadequate fasting. Surgery must not be delayed for fasting compliance. ### Fasting Guidelines in Emergency vs. Elective Surgery | Scenario | Fasting Requirement | Action | |---|---|---| | **Elective surgery** | 6–8 hours (solids); 2 hours (clear fluids) | Delay if fasting not met | | **Urgent surgery** (within 6–12 hrs) | Attempt fasting; if not met, proceed with RSI | Proceed with aspiration precautions | | **Emergency/life-threatening** (immediate) | Fasting waived | Proceed immediately with RSI | **High-Yield:** The **ASA Classification** determines urgency: - **Elective:** Fasting guidelines strictly followed - **Urgent (Class II–III):** Fasting guidelines attempted but not absolute contraindication - **Emergency (Class IV):** Life-threatening condition; fasting is NOT a barrier to surgery ### Application to This Case This patient has **acute peritonitis from perforated duodenal ulcer** — a **Class IV emergency** (life-threatening). Key considerations: 1. **Fasting is waived:** The risk of sepsis, shock, and death from perforation far exceeds aspiration risk. 2. **RSI is mandatory:** Rapid sequence intubation with cricoid pressure (Sellick maneuver) is the standard of care for emergency patients with full stomachs. 3. **Aspiration precautions:** Pre-oxygenation, head-up position, suction, and avoidance of bag-mask ventilation are essential. 4. **Diabetic consideration:** Elevated blood glucose (280 mg/dL) is a stress response; insulin management is secondary to emergency surgery. **Clinical Pearl:** In emergency surgery, the anesthetist must assume a **full stomach** regardless of reported fasting time. RSI with cricoid pressure, modified anesthetic induction (e.g., etomidate or ketamine), and immediate airway control are non-negotiable. **Mnemonic: CRASH-C** (for emergency airway management): - **C**ricoid pressure - **R**apid sequence intubation - **A**void bag-mask ventilation - **S**uction ready - **H**ead-up position - **C**lear airway equipment **Warning:** Delaying emergency surgery to achieve fasting compliance is a critical error and can result in patient death. Fasting guidelines are for elective cases only.