From: Early respiratory deterioration predicts poor outcome after aneurysmal subarachnoid hemorrhage
Category | Level of respiratory support (compared with first admission day) |
---|---|
1 | Up to 5 l O2 |
2 | >5 l O2 by nasal canulla or Venturi mask |
3 | Nonrebreathing mask or non-invasive positive-pressure ventilation |
4 | Invasive mechanical ventilation |
When mechanically terminated | Decreased PaO2/FiO2 ratio |