End-tidal carbon dioxide monitoring using a naso-buccal sensor is not appropriate to monitor capnia during non-invasive ventilation

Annals of Intensive Care

Table 1 Patient’s characteristics and clinical information.

Patient number	Sex	Age [years]	BMI [kg/m ² ]	SAPS 2 score	Cause of acute respiratory failure	Respiratory comorbidity	FEV1 (% of predicted value)	GOLD classification
1	F	52	25.3	24	COPD exacerbation	COPD	36	III
2	M	80	22.9	43	Chest trauma with multiple rib fractures	None
3	M	68	24.5	58	Pneumonia	COPD	43	III
4	M	59	42.6	44	Acute lung injury (bacterial peritonitis)	COPD	57	II
5	M	77	29.3	43	Pneumonia	COPD	32	III
6	M	77	29.4	43	Acute lung injury (pancreatitis)	None
7	M	63	29.4	31	COPD exacerbation	COPD	33	III
8	M	77	26.1	36	Acute lung injury (peritonitis)	None
9	F	71	22.0	45	COPD exacerbation	COPD	Not available	Not available
10	F	61	17.2	42	COPD exacerbation	COPD	28	IV
11	F	62	21.5	32	Central hypoventilation (analgesia-sedation)	COPD	54	II
Median		68	25.3	43
Centile 25		62	22.5	34
Centile 75		77	29.4	44

F, female; M, male; FEV1, forced expiratory volume in 1 s; COPD, chronic obstructive pulmonary disease; BMI, body mass index.