Asymmetrical high-flow nasal cannula performs similarly to standard interface in patients with acute hypoxemic post-extubation respiratory failure: a pilot study

Table 1 Characteristics of the study population

N	Gender	Size cannula	Age (years)	BMI (kg/m²)	SAPS II	ICU admission	IMV (hours)	ICU LOS (days)	PaO₂/FiO₂ (Venturi mask)
1	F	S	52	27	21	Trauma	84	7	173
2	M	L	84	25	52	Septic shock	131	5	263
3	F	M	77	26	47	Septic shock	281	14	169
4	M	L	54	29	49	Septic shock	320	14	145
5	F	M	53	21	34	Abdominal surgery	30	2	283
6	M	M	60	27	23	Neurosurgery	30	3	176
7	M	L	73	26	40	Abdominal surgery	25	2	279
8	F	M	77	27	40	Gastrointestinal bleeding	40	14	213
9	F	M	73	21	48	Abdominal surgery	28	2	184
10	M	L	65	26	38	Trauma	27	2	194
11	M	L	59	27	18	Endocrinological surgery	27	2	219
12	M	L	85	28	34	Neurosurgery	28	2	186
13	F	S	69	22	34	Abdominal surgery	28	2	245
14	M	L	68	27	38	Abdominal surgery	28	2	196
15	M	M	33	41	40	Trauma	29	2	183
16	M	M	52	28	26	Gastrointestinal bleeding	288	4	225
17	M	M	79	27	40	Thoracic surgery	83	4	180
18	F	M	64	26	29	Abdominal surgery	25	2	290
19	M	L	63	29	45	Otorhinolaryngological surgery	36	3	163
20	M	M	60	33	18	Abdominal surgery	25	2	272
Total 20	F (35%)	-	65 [55–76]	27 [26–29]	38 [27–44]	-	30 [27–84]	2 [2–5]	195 [177–259]

Continuous variables are expressed as median, with interquartile range [IQR], and categorical variables are expressed as absolute values (%)
Abbreviations: N patient number, Tot Total, BMI body mass index, SAPS II simplified acute physiology score II at ICU admission, ICU intensive care unit, IMV invasive mechanical ventilation, LOS length of stay, PaO₂ partial arterial pressure of oxygen, FiO₂ inspiratory fraction of oxygen

ISSN: 1471-2466