Mask squeeze

Background

• Occurs when air is not added to facemask during scuba diving descent

Barotrauma Types

• Otic barotrauma
• Pulmonary barotrauma
• Sinus barotrauma
• Mask squeeze
• Barodentalgia (trapped dental air causing squeeze)

Clinical Features

Mild barotrauma to a diver caused by mask squeeze

• Facial bruising
• Conjunctival Injection/hemorrhage
• Retrobulbar hemorrhage if severe

Differential Diagnosis

Diving Emergencies

• Barotrauma of descent
  • Otic barotrauma
  • Pulmonary barotrauma
  • Sinus barotrauma
  • Mask squeeze
  • Barodentalgia (trapped dental air causing squeeze)
• Barotrauma of ascent
  • Pulmonary barotrauma (pulmonary overpressurization syndrome)
  • Decompression sickness (DCS)
  • Arterial gas embolism
  • Alternobaric vertigo
  • Facial baroparesis (Bells Palsy)
• At depth injuries
  • Oxygen toxicity
  • Nitrogen narcosis
  • Hypothermia
  • Contaminated gas mixture (e.g. CO toxicity)
  • Caustic cocktail from rebreathing circuit

Evaluation

• Clinical diagnosis

Management

• Dependant on presentation, generally supportive care

See Also

• Scuba diving emergencies