| Precautions for use: The GoodKnight 420Evolution must be used with caution when patients have the following conditions: |
| 1. |
Extremely low blood pressure. |
| 2. |
pneumothorax or pneumomediastinum. |
| 3. |
Severe bullous emphysema or emphysema previously complicated by pneumothorax. |
| 4. |
Massive epistaxis or previous massive epistaxis. |
| 5. |
Decompensated cardiac insufficiency or hypotension, especially in cases of depletion in blood volume or cardiac rhythm disorder. |
| 6. |
Pneumo encephalus, traumatism,or recent surgery with the after effect of a cranio-nasopharyngeal fistula. |
| 7. |
Acute sinusitis, otitis media,or perforation of the tympanic membrane. |
| 8. |
Severe claustrophobia. |