Outcomes of patients receiving non-invasive ventilation (NIV) in the general intensive care unit: is NIV duration an important factor?

Intensive Care Medicine Experimental

Table 1 Comparing outcomes according to duration of NIV.

	NIV for < 48 Hours	NIV for > 48 Hours	P-Value
Number of patients	69	34
Median % predicted acute mortality (ICNARC) [IQR]	36 [18.5-62.5]	48 [15-68]	0.34
Median time period of initial NIV administration (hours) [IQR]	12 [5-18]	136 [72-227]	< 0.05
Median % time NIV actually received during 1st period of administration [IQR]	100 [91-100]	37 [18-71]	< 0.05
Number intubated	23 (33%)	16 (47%)	0.18
Median time for mechanical ventilation for those intubated (days) [IQR]	9 [5-10.5]	9 [5.5-19.5]	0.36
Median ICU length of stay (days) [IQR]	4.9 [3-11]	11.3 [7-23]	< 0.05
Number surviving to ICU discharge	48 (70%)	25 (74%)	0.68