Absolute Contrainindications

Absolute Contrainindications

Conditions causing unconsciousness

  • Epilipsy
  • Diabetes where the patient requires insulin

ENT conditions

  • Inability to auto-inflate the middle ears.
  • Previous middle ear surgery with insertion of prothesis to replace any of the ossicles

Lung Conditions

  • Asthma
  • Lung cysts
  • Previous spontaneous pneumothorax
  • Obstructive lung disease
  • Lungs which empty unevenly (X-ray appearance)
  • Previous thoracotomy


Relative Contrainindications

  • FEV1/FEV ratio less than 75%
  • Poor physical condition
  • Previous myocardial infarction
  • Pregnancy