During rapid sequence induction in a 32-year-old Indian male with acute abdomen scheduled for emergency laparotomy, which is the most common complication associated with cricoid pressure application?

Explanation

## Most Common Complication of Cricoid Pressure in RSI ### Overview Cricoid pressure (Sellick maneuver) is a cornerstone of rapid sequence induction to prevent aspiration of gastric contents. However, it carries well-recognized complications. ### Mechanism of Impaired Vocal Cord Visualization 1. Cricoid pressure compresses the cricoid cartilage posteriorly against the cervical vertebrae 2. This compression can shift the larynx posteriorly and laterally 3. Results in **anterior displacement of the vocal cords** relative to the line of sight 4. Occurs in 10–50% of RSI cases depending on pressure magnitude and technique 5. May necessitate adjustment of pressure or use of bougie/stylet techniques ### Incidence Comparison | Complication | Incidence | Mechanism | Clinical Significance | |---|---|---|---| | **Impaired vocal cord visualization** | 10–50% | Laryngeal displacement | Most common; usually reversible | | Esophageal rupture | <0.01% | Excessive pressure or pre-existing pathology | Rare; catastrophic | | Recurrent laryngeal nerve injury | <0.1% | Prolonged or misdirected pressure | Very rare; usually transient | | Tracheal stenosis | <0.01% | Chronic pressure or multiple intubations | Rare; long-term complication | ### Key Point: **Impaired visualization is the most frequent intraoperative consequence of cricoid pressure**, occurring in approximately 1 in 2–3 RSI cases. It is usually managed by adjusting pressure magnitude, direction, or using alternative visualization aids. ### Clinical Pearl: **Optimal cricoid pressure = 10 N before loss of consciousness, 30 N after loss of consciousness.** Excessive pressure (>30 N) increases the risk of vocal cord displacement and airway obstruction. ### High-Yield: The trade-off in RSI: cricoid pressure reduces aspiration risk but may worsen intubation difficulty. Modern practice emphasizes **correct technique** (posterior cricoid pressure, not lateral) and **readiness to release** if intubation becomes impossible. ### Tip: In exams, remember: **complications of cricoid pressure are ranked by frequency, not severity**. Impaired visualization >> esophageal rupture (catastrophic but rare). [cite:Stoelting's Anesthesia and Co-existing Disease Ch 15]