A 58-year-old male with severe rheumatoid arthritis presents for elective lumbar spine fusion. Clinical examination reveals limited mouth opening (15 mm), cervical spine rigidity, and a Mallampati score of IV. Awake fiberoptic intubation is planned. After topical anesthesia with 4% lidocaine spray to the oropharynx and 2% viscous lidocaine to the tongue, the patient develops sudden coughing and mild stridor during scope insertion. Which of the following is the most appropriate immediate management?

Explanation

## Immediate Management of Adverse Events During Awake FOI **Key Point:** Coughing and stridor during awake fiberoptic intubation indicate inadequate topical anesthesia, laryngeal irritation, or scope-induced trauma. The priority is patient safety and airway preservation—immediate withdrawal and reassessment is the safest approach. ### Why Withdrawal Is Correct 1. **Prevents Airway Compromise:** - Stridor suggests laryngeal edema or spasm is developing - Continued advancement risks complete airway obstruction - Withdrawal allows edema to resolve and permits reassessment 2. **Allows Optimization:** - Time to apply additional topical anesthesia (superior laryngeal nerve block, recurrent laryngeal nerve topicalization) - Reassess technique and scope angle - Consider sedation adjustment (light sedation may reduce cough reflex without loss of airway reflexes) 3. **Maintains Patient Cooperation:** - Stopping demonstrates responsiveness to patient distress - Rebuilds confidence for reattempt - Reduces risk of aspiration if patient becomes distressed **Clinical Pearl:** Awake FOI is a titrated procedure—patience and incremental advancement are hallmarks of success. The cough-and-stridor response is a **stop signal**, not a "push harder" signal. **High-Yield:** Common causes of coughing during awake FOI: - Inadequate superior laryngeal nerve block (supplies epiglottis and aryepiglottic folds) - Scope contact with vocal cords before they are fully anesthetized - Excessive scope manipulation or rapid advancement - Secretions obscuring visualization ### Why Other Options Are Wrong **Continuing gentle advancement (Option 1):** - Violates the principle of "stop and reassess" - Risk of laryngospasm or complete obstruction - Scope trauma to already-irritated larynx **Dexamethasone IV (Option 2):** - Useful for **croup or post-extubation stridor** (takes 30–60 minutes to work) - Does NOT provide immediate relief during active intubation attempt - Should not delay withdrawal and reassessment **Rapid sequence intubation (Option 3):** - Converts an awake, cooperative patient with intact airway reflexes into an anesthetized patient with potentially difficult airway - Defeats the entire purpose of awake FOI in a high-risk airway - Increases aspiration risk if patient has not fasted adequately - Reserved for failure of awake FOI after optimization attempts ## Awake FOI Technique Review ```mermaid flowchart TD A[Difficult Airway Anticipated]:::outcome --> B[Awake FOI Decision]:::decision B --> C[Topical Anesthesia]:::action C --> D["Superior Laryngeal Nerve Block<br/>+ Translaryngeal Block<br/>+ Topical Spray"]:::action D --> E[Light Sedation if Needed]:::action E --> F[Scope Insertion]:::action F --> G{Cough/Stridor?}:::decision G -->|Yes| H[WITHDRAW Scope]:::urgent G -->|No| I[Advance Gradually]:::action H --> J[Allow Recovery]:::action J --> K[Reassess & Optimize]:::action K --> F I --> L[Visualize Cords]:::action L --> M[Thread ETT]:::action M --> N[Confirm Position]:::outcome ``` **Mnemonic: STOP-FOI** - **S** = Stridor or severe cough → Stop immediately - **T** = Topical anesthesia inadequate → Reapply - **O** = Optimize positioning and sedation - **P** = Proceed only after reassessment [cite:Miller's Anesthesia 8e Ch 17]