Impact of prolonged assisted ventilation on diaphragmatic efficiency: NAVA versus PSV

Table 1 Baseline demographic and clinical characteristics of the patients

	Patient number	Age	Sex	PBW (Kg)	APACHE II	Causes of ARF	MV (days)	NAVA or PSV level (μV or cmH₂O)	PEEP (cmH₂O)	FiO₂ %	ICU outcome
NAVA group	1	65	M	70	12	Politrauma	5	1	8	35	A
	2	54	M	75	14	ARDS, sepsis	4	2	5	40	A
	3	79	M	61	9	Politrauma	3	1,4	5	40	A
	4	83	F	69	23	Pneumonia	5	1,2	6	50	D
	5	27	F	48	10	Cardiac Failure	6	1,8	6	35	A
	6	72	F	73	7	COPD exacerbation	4	1	8	50	A
	7	83	F	60	8	Politrauma	7	1,5	8	35	A
	8	63	M	67	16	Cardiac failure	4	1	10	50	D
	9	47	F	57	15	ARDS, pneumonia	4	1,2	9	40	A
	10	81	M	75	13	COPD exacerbation	7	1,5	6	45	A
	11	81	F	52	15	Cardiac failure	4	2	8	50	A
	12	80	F	61	13	COPD exacerbation	4	1	8	40	A
	13	54	F	58	17	Pneumonia	9	1	10	50	D
Mean		66.8		63.5	13.2		5.1	1.35	7.5	43.1
SD		17.3		8.7	4.3		1.7	0.38	1.7	6.3
PSV group	1	76	M	70	11	Politrauma	5	12	8	40	A
	2	80	M	66	14	Pneumonia	6	12	8	40	A
	3	64	M	61	10	ARDS, politrauma	4	11	8	55	A
	4	77	M	66	13	Pancreatitis	4	8	5	40	D
	5	28	F	43	12	SLE	5	14	8	35	A
	6	75	M	69	12	COPD exacerbation	6	12	9	60	A
	7	74	F	52	20	Pneumonia, ARDS	4	11	6	50	A
	8	84	F	66	17	Politrauma	8	15	7	45	A
	9	65	M	62	20	ARDS, politrauma	7	10	10	50	D
	10	73	M	70	13	ARDS, sepsis	4	8	10	35	A
	11	81	M	68	15	Cardiac Failure	4	12	8	60	A
	12	61	M	66	18	COPD exacerbation	5	12	8	35	D
Mean		69.8		63.2	14.6		5.1	11.4	7.9	45.4
SD		15		8.1	3.4		1.3	2.1	1.4	9.4

NAVA neurally adjusted ventilator assist, PSV pressure support ventilation, PBW predicted body weight, APACHE II, Acute Physiology, Age and Chronic Health Evaluation II score (can range from 0 to 299, with higher scores indicating a higher probability of death), ARF acute respiratory failure, MV mechanical ventilation, PEEP positive end-expiratory pressure, ARDS acute respiratory distress syndrome, SLE systemic lupus erythematosus, COPD chronic obstructive pulmonary disease, FiO ₂ inspiratory oxygen fraction, D death, A alive

ISSN: 1364-8535