Supraglottic Airway (LMA)

Airway · Anesthesia · 10–20 min

Laryngeal mask airway sits above the glottis; a rescue airway when intubation fails or for short anesthetics.

Indications

  • Failed intubation rescue
  • Short anesthetic
  • Difficult airway backup

Contraindications

  • Full stomach (relative)
  • Airway pathology

Equipment

  • LMA sized to weight (3 F, 4 M, 5 large M)
  • Lubricant
  • Syringe

Positioning

  • As appropriate for the procedure and patient comfort.

Consent

  • Explain indication, benefits, alternatives
  • Explain risks & complications
  • Obtain written/verbal consent as per SOP
  • Document consent

Universal precautions

  • Hand hygiene
  • PPE — gloves, mask, eye protection
  • Aseptic technique
  • Sharps safety
  • Verify patient identity & site

Step-by-step (0/4)

Tap to complete

1. Deflate cuff & lubricate posterior surface

Ensures smooth insertion.

2. Insert against hard palate

3. Inflate cuff

4. Confirm ventilation

Immediate complications

  • Aspiration
  • Sore throat
  • Malposition

Delayed complications

  • Nerve palsy (rare)

Recognition

  • Leak
  • Poor ventilation

Initial management

  • Reposition or replace

Prevention

  • Correct size
  • Adequate depth of anesthesia

Post-procedure observation

  • Vitals q15min × 1h then hourly

Monitoring

  • Site inspection
  • Symptom review

Documentation

  • Procedure note
  • Consent
  • Findings

Patient instructions

  • Report pain, bleeding, fever, worsening symptoms

Educational bedside guide. Perform only under supervision until competent. Follow local SOPs and consent policy.

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