Outcomes
The primary outcome was oxygenation and functional capacity. The
secondary was the impact on functional variables such as Functional
Independence Measure (FIM), peripheral muscle strength, pulmonary
complications, death, length of stay in the ICU and hospital. The
primary oxygenation outcome was assessed before, immediately after, and
one day after NIV application, functional capacity was assessed
preoperatively and on the day of hospital discharge. Secondary outcomes
were assessed preoperatively and on the day of hospital discharge.