Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 11/3/2025

Anesthesia Management for Pediatric Patients Undergoing Bilateral Myringotomy and Grommet Insertion

Preoperative Preparation

  • The American Society of Anesthesiologists recommends positioning with shoulder roll for optimal airway alignment and having appropriately sized oral/nasopharyngeal airways immediately available 1
  • Prepare supraglottic airway device as rescue device with maximum 3 insertion attempts if needed, as suggested by the Anaesthesia journal 2, 3, 1
  • Have suction immediately available and ensure standard monitoring, as recommended by Praxis Medical Insights 1

Airway Management

  • Maintain spontaneous ventilation throughout via facemask or LMA, avoiding muscle relaxants for this brief procedure, as recommended by Praxis Medical Insights 1
  • The Anaesthesia journal suggests that LMA reduces perioperative respiratory adverse events by 66% compared to tracheal intubation 4
  • LMA decreases risk of laryngospasm and bronchospasm 5-fold compared to endotracheal intubation, according to the Anaesthesia journal 4

Induction of Anesthesia

  • Maintain continuous vigilance as younger children desaturate rapidly below 94% SpO₂, as recommended by Praxis Medical Insights 1

Maintenance of Anesthesia

  • Ensure adequate depth before surgical stimulation to prevent laryngospasm, monitoring for signs of inadequate depth, as recommended by Praxis Medical Insights 1

Management of Potential Complications

  • Apply CPAP with 100% oxygen using reservoir bag and facemask while ensuring optimal head positioning and jaw thrust to manage laryngospasm, as suggested by Praxis Medical Insights 5
  • Apply Larson's maneuver to manage laryngospasm, as recommended by Praxis Medical Insights 5
  • Administer propofol 1-2 mg/kg IV if laryngospasm persists, as suggested by Praxis Medical Insights 5
  • Administer suxamethonium 1 mg/kg IV immediately for severe laryngospasm with total cord closure, as recommended by Praxis Medical Insights 5

Critical Pitfalls to Avoid

  • Do not perform multiple intubation attempts without maintaining oxygenation between attempts, using bag-valve-mask or supraglottic airway, as recommended by the Anaesthesia journal 2, 3
  • Do not ignore signs of inadequate depth before surgical stimulation, as this precipitates laryngospasm, according to Praxis Medical Insights 1, 5
  • Complete laryngospasm presents with silent inspiration, indicating total cord closure, and if unrelieved, progresses to post-obstructive pulmonary edema and hypoxic cardiac arrest, as warned by Praxis Medical Insights 5

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