A 58-year-old man with type 2 diabetes mellitus (on metformin and glibenclamide) and gastroesophageal reflux disease (GERD) is scheduled for emergency repair of a perforated duodenal ulcer at 02:00 AM. He had a full dinner with meat, rice, and vegetables at 20:00 PM the previous evening. His last clear liquid intake was at 23:30 PM (water). He is hemodynamically stable with no signs of bowel obstruction. What is the most appropriate fasting status classification and anesthetic management approach for this patient?

Explanation

## Emergency Surgery and the Full Stomach Problem **Key Point:** In emergency surgery, the patient is assumed to have a full stomach regardless of fasting duration. Full stomach precautions (rapid sequence intubation with cricoid pressure) are mandatory to prevent aspiration. ### Fasting Status Classification in Emergency Surgery | Scenario | Fasting Status | Rationale | |---|---|---| | Elective surgery, fasted appropriately | Fasted | Safe for standard induction | | Emergency surgery, any recent food intake | **Non-fasted** | Assume full stomach; risk of aspiration | | Emergency surgery, no food/fluid intake >6 hours | **Still non-fasted** | Gastric motility impaired by stress, pain, medications | | Trauma, acute illness | **Non-fasted** | Delayed gastric emptying due to sympathetic activation | **High-Yield:** The patient had a full meal (meat, rice, vegetables) at 20:00 PM and water at 23:30 PM. Even though >2 hours have elapsed since the last clear liquid, the solid meal remains in the stomach. Emergency surgery = full stomach assumption, regardless of clock time. ### Rapid Sequence Intubation (RSI) Protocol for Full Stomach 1. **Pre-oxygenation:** 3–5 minutes of 100% O₂ (or 8 vital capacity breaths) 2. **Cricoid pressure (Sellick maneuver):** Applied by assistant at onset of loss of consciousness 3. **Induction agent:** Propofol or etomidate (avoid thiopental in emergency/shock) 4. **Succinylcholine or rocuronium:** Rapid-onset paralytic 5. **Immediate intubation:** No bag-mask ventilation to avoid gastric insufflation 6. **Cuff inflation & tube confirmation:** Secure airway before releasing cricoid pressure **Clinical Pearl:** Cricoid pressure reduces gastric insufflation and aspiration risk by compressing the esophagus against the cervical spine, occluding the esophageal lumen. **Warning:** ~~Delaying emergency surgery for 6 hours~~ is inappropriate and dangerous. A perforated duodenal ulcer is a surgical emergency; delay increases peritonitis, sepsis, and mortality risk. The patient must proceed immediately with full stomach precautions. ### Comorbidity Considerations - **Diabetes + GERD:** Both impair gastric motility, increasing aspiration risk further - **Metformin & glibenclamide:** Continue perioperatively; monitor glucose intraoperatively - **Hemodynamic stability:** Allows use of standard induction agents; avoid propofol if hypotensive **Mnemonic:** **FULL STOMACH = RSI** — Full stomach (emergency or recent food) requires Rapid Sequence Intubation with cricoid pressure.