What is the appropriate prescription for a patient presenting with stridor?

Treatment of Stridor

For acute stridor, immediately administer nebulized epinephrine (1 mg) and position the patient upright with high-flow humidified oxygen. 1

Immediate Management Algorithm

First-Line Interventions

• Nebulized epinephrine (adrenaline) 1 mg: This is the primary pharmacologic treatment for acute upper airway obstruction/stridor 1
• Patient positioning: Nurse upright to optimize airway patency 1
• High-flow humidified oxygen: Administer immediately to maintain oxygenation 1
• Keep patient NPO: Laryngeal competence may be impaired despite full consciousness 1

Corticosteroids for Inflammatory Causes

If stridor is due to inflammatory airway edema (post-intubation, surgical, thermal, or chemical injury), start systemic steroids immediately:

• Dose: Hydrocortisone 100 mg IV every 6 hours (or equivalent steroid dose) 1
• Timing: Must be started as soon as possible and continued for at least 12 hours 1
• Critical caveat: Single-dose steroids given immediately before extubation are ineffective 1
• Important limitation: Steroids have NO effect on mechanical edema from venous obstruction (e.g., neck hematoma) 1

Adjunctive Therapies

• Heliox (helium-oxygen mixture): May be helpful but limits FiO₂ delivery 1. Consider as a therapeutic trial in mechanical upper airway obstruction or postoperative stridor 2
• End-tidal CO₂ monitoring: Desirable for ongoing assessment 1
• Encourage deep breaths and coughing: To clear secretions 1

Context-Specific Considerations

Post-Extubation Stridor

The guidelines specifically address conscious patients with post-extubation stridor, recommending inhaled epinephrine as the treatment of choice 3. The evidence does NOT support routine prophylactic methylprednisolone for preventing post-extubation stridor 3.

Avoid Common Pitfalls

1. Don't delay nebulized epinephrine: This is your first-line treatment, not steroids alone
2. Don't give single-dose steroids: They must be continued for at least 12 hours to be effective
3. Don't assume all stridor responds to steroids: Mechanical obstruction (hematoma, mass) requires different management
4. Don't lay the patient flat: Upright positioning is essential
5. Avoid factors that impede venous drainage: This can worsen airway edema 1

Monitoring and Escalation

• Maintain continuous observation with appropriate monitoring
• Have airway equipment immediately available for potential reintubation
• If stridor persists despite treatment, consider underlying causes requiring surgical intervention (e.g., airway mass, bilateral vocal cord palsy, tracheal stenosis)
• Specialist consultation (ENT, anesthesia) should be obtained early for refractory cases

Sample Prescription

Rx:

1. Epinephrine (adrenaline) 1 mg nebulized immediately, may repeat as needed
2. Hydrocortisone 100 mg IV every 6 hours (if inflammatory cause suspected)
3. High-flow humidified oxygen to maintain SpO₂ >94%
4. Position patient upright at 45-90 degrees
5. Keep NPO
6. Continuous monitoring with pulse oximetry and capnography if available