Neurally adjusted ventilatory assist (NAVA) versus pressure support ventilation: patient-ventilator interaction during invasive ventilation delivered by tracheostomy

Table 1 Main characteristics of the population

Total population (n = 61)	Median	95% CI	Minimum	Maximum
Age (years)	65	63–66.6	32	85
BMI (kg/m²)	27.7	25.4–29.5	20.4	39
SAPS II	59	53–69	22	93
Men/women, n (%)	44 (72.1%)/17 (27.9%)
Duration of MV (days)	39	33–44	15	164
Weaning period (days)	21	19–26	2	58
Extubation failure (n)	0	0–1	0	4
ICU stay (days)	43	36.4–53	13	169
Respiratory disease, n (%)
COPD	18 (29.5%)
Restrictive syndrome	6 (9.8%)
Cardiac disease, n (%)
Coronary disease	19 (31.1%)
Heart failure	10 (16.4%)
Obesity, n (%)
Normal weight	21 (34.4%)
Overweight	19 (31.1%)
Moderate obesity (BMI 30–35 kg/m²)	16 (26.2%)
Severe obesity (BMI > 35 kg/m²)	5 (8.2%)
Postoperative, n (%)
Digestive surgery	2 (3.3%)
Cardiothoracic and vascular surgery	22 (36.1%)
Day 28 mortality, n (%)	3 (4.9%)
Day 90 mortality, n (%)	28 (45.9%)

BMI body mass index, CI confidence interval, COPD chronic obstructive pulmonary disease, ICU intensive care unit, MV mechanical ventilation, SAPS II Simplified Acute Physiology Score II

ISSN: 1364-8535