Bag-Mask Ventilation

Airway · Anesthesia/Emergency · Continuous until definitive airway

Positive-pressure ventilation using a self-inflating bag and mask to oxygenate an apneic or hypoventilating patient.

Indications

  • Apnea
  • Hypoventilation
  • Pre-oxygenation before intubation
  • Cardiac arrest

Contraindications

  • Complete upper airway obstruction (relative)
  • Severe facial trauma (relative)

Equipment

  • Self-inflating bag with reservoir
  • Appropriately sized mask
  • O2 source at 15 L/min
  • OPA/NPA
  • Suction ready

Positioning

  • Sniffing position; head tilt–chin lift (or jaw thrust if C-spine concern).

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 (0/5)

Tap to complete

1. Open airway

Head tilt–chin lift or jaw thrust; insert OPA if no gag.

Why: Prevents tongue obstruction

Pearl: Two-person BMV improves seal

2. Select mask

3. EC-clamp seal

4. Ventilate

5. Reassess

Immediate complications

  • Gastric insufflation
  • Aspiration
  • Barotrauma
  • Inadequate ventilation

Delayed complications

  • Pneumonia

Recognition

  • Poor chest rise
  • Falling SpO2
  • Gastric distension

Initial management

  • Reposition airway
  • Add OPA/NPA
  • Two-person technique
  • Reduce tidal volume

Prevention

  • Correct mask size
  • Slow controlled breaths

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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