If laryngospasm persists after initial oxygenation and jaw thrust, what is the next step in management?

If laryngospasm persists after initial oxygenation and jaw thrust, what is the next step in management?

• A. Provide 100% O2 with gentle mask ventilation and jaw thrust; avoid stimulation.
• B. Administer IV succinylcholine 0.5 mg/kg or deepen anesthesia with propofol 0.5–1 mg/kg.
• C. Perform awake fiberoptic intubation.
• D. Increase stimulation to provoke coughing to break laryngospasm.

Answer: (B)

Laryngospasm is an abrupt, reflex closure of the vocal cords that can persist even after you’ve provided 100% oxygen and performed a jaw thrust. When basic airway maneuvers don’t relieve it, the goal becomes rapidly abolishing the laryngeal step and re-establishing ventilation. The fastest and most reliable way to do that is with a brief period of neuromuscular blockade to stop the muscle spasm, allowing the airway to open and ventilation to resume. Administering IV succinylcholine at about 0.5 mg/kg achieves rapid, short-lived paralysis, with onset within a minute or so, which quickly breaks the laryngospasm. If you cannot or prefer not to use a paralytic, deepening anesthesia with propofol in the 0.5–1 mg/kg range can similarly blunt airway reflexes and relieve the spasm. Awake fiberoptic intubation is not appropriate here because the airway is acutely obstructed and the patient cannot protect their airway or cooperate, and increasing stimulation to provoke coughing would worsen the laryngospasm. The emphasis is on promptly relaxing or deepening anesthesia to overcome the reflex closure rather than continuing stimulation or ventilation alone. If the airway cannot be secured after these steps, escalate to definitive airway management.

Laryngospasm is an abrupt, reflex closure of the vocal cords that can persist even after you’ve provided 100% oxygen and performed a jaw thrust. When basic airway maneuvers don’t relieve it, the goal becomes rapidly abolishing the laryngeal step and re-establishing ventilation. The fastest and most reliable way to do that is with a brief period of neuromuscular blockade to stop the muscle spasm, allowing the airway to open and ventilation to resume. Administering IV succinylcholine at about 0.5 mg/kg achieves rapid, short-lived paralysis, with onset within a minute or so, which quickly breaks the laryngospasm. If you cannot or prefer not to use a paralytic, deepening anesthesia with propofol in the 0.5–1 mg/kg range can similarly blunt airway reflexes and relieve the spasm.

Awake fiberoptic intubation is not appropriate here because the airway is acutely obstructed and the patient cannot protect their airway or cooperate, and increasing stimulation to provoke coughing would worsen the laryngospasm. The emphasis is on promptly relaxing or deepening anesthesia to overcome the reflex closure rather than continuing stimulation or ventilation alone. If the airway cannot be secured after these steps, escalate to definitive airway management.