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Laryngomalacia is the most common cause of stridor in infants, characterized by inspiratory collapse of supraglottic structures due to neuromuscular immaturity or anatomic laxity. When severe, it can result in feeding difficulties, poor weight gain, or sleep-related breathing issues.
Supraglottoplasty is a minimally invasive surgical procedure to relieve airway obstruction by trimming or repositioning floppy supraglottic tissues.
In this video we have described the use of coblation want to release aryepiglottic folds and to reduced redundant arytenoid tissue to improve laryngomalacia collapse during inspiration.
Step 1: Positioning & Exposure
• Child in supine position, neck extended ("sniffing position")
• Suspend laryngoscope for a clear view of supraglottic structures
• Visualize aryepiglottic folds, redundant arytenoid mucosa, and short epiglottis
Step 2: Laryngoscopy Findings
• Omega-shaped epiglottis
• Collapse of aryepiglottic folds on inspiration
• Redundant mucosa over arytenoids prolapsing into glottis
Step 3: Aryepiglottic Fold Division
• Use coblation device to divide tight folds bilaterally
• Avoid over-resection to prevent supraglottic stenosis
Step 4: Trimming Redundant Arytenoid Mucosa
• Gentle excision of mucosa over arytenoids with coblation
• Preserve underlying cartilage and interarytenoid area
Indications for Surgery
• Severe stridor with retractions or feeding compromise, (Raman score more than 10)
• Failure to thrive
• Desaturation events or sleep-disordered breathing
• Cyanotic episodes or apnea
• Unresponsive to conservative management (e.g., PPI, feeding modification)
None
Positioning & Exposure
• Child in supine position, neck extended ("sniffing position")
• Suspend laryngoscope for a clear view of supraglottic structures
• Visualize aryepiglottic folds, redundant arytenoid mucosa, and short epiglottis
Preoperative Workup
• Flexible laryngoscopy (awake, supine vs prone)
• Direct laryngoscopy & bronchoscopy (DLB) to rule out synchronous lesions
• Swallow study if aspiration is suspected
• Sleep study in borderline cases
Well exposed and suspended larynx to look for
- Epiglottis
- Arytenoids
- Aryepiglottic folds
- Vocal folds
- Pharyngoepiglottic folds
Advantage
- Simple and quick procedure
- Surgical Precision
- NO bleeding
Disadvantage
- Cost of the wand as compared to cold instruments
Complication
-Edema
-Aspiration
-Supraglottic stenosis
Prevention/Treatment
-Perioperative steroids, humidification
-Preserve interarytenoid tissue
-Avoid deep resections or bilateral trauma
-Gentle handling, adrenaline
None
-None
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2. Thompson DM. Abnormal sensorimotor integrative function of the larynx in congenital
laryngomalacia: a new theory of etiology. Laryngoscope 2007;117:1–33.
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J Pediatr Otorhinolaryngol 1997;39:9–18.
4. Zalzal GH, Anon JB, Cotton RT. Epiglottoplasty for the treatment of laryngomalacia. Ann
Otol Rhinol Laryngol 1987;96:72–6
5. Holinger LD, Konior RJ. Surgical management of severe laryngomalacia. Laryngoscope
1989;99:136–42
Review Coblation Assisted Supraglottoplasty.