Table 3.

Spontaneous breathing test outcome and weaning characteristics.

Extubation After SBT	YES 67 (49.6%)	NO 68 (50.4%	Overall 135 (100%)	p value
Reason for SBT Failure
Cardiovascular	–	39 (68.4%)	–	NA
Respiratory	–	16 (28.1%)	–	NA
Neurologic	–	1 (1.75%)	–	NA
Other	–	1 (1.75%)	–	NA
Interface after Extubation
AA	14 (21.2%)	–	–	NA
O2	36 (54.5%)	–	–	NA
HFNC	1 (1.75%)	–	–	NA
NIV	15 (22.7%)	–	–	NA
Weaning Classification				< 0.0001
Easy	37 (55.2%)	0 (0%)	37 (27.2%)	–
Prolonged	13 (19.4%)	39 (57.4%)	52 (38.2%)	–
Difficult	17 (25.4%)	29 (42.6%)	47 (34.6%)	–

Results are presented as number (%). A p value equal or below 0.05 was considered statistically significant and depicted in black tone.

SBT: spontaneous breathing test; AA: ambient air; HFNC: high flow nasal canula; NIV: noninvasive ventilation; NA: not applicable.

Significant values are in bold.