Determinants of weaning success in patients with prolonged mechanical ventilation

Table 1 Patients' characteristics at enrollment

	Successful weaning group (n = 16)	Failed weaning group (n = 14)	P value
Gender, male/female	9/7	10/4	NS
Age, years	67.6 ± 13.5	70.9 ± 11	NS
Body mass index	24 ± 5.6	21.6 ± 2.6	NS
SAPS II	29.6 ± 7.3	31.6 ± 6	NS
Diagnosis			NS
Post-cardiac surgery	5	4
ALI/ARDS	5	2
COPD exacerbation	6	8
Duration of MV at the time of the study^a	37.5 ± 19.6 (25–40)	48.9 ± 26.9 (30–60)	NS

^aThe 25th to 75th percentiles are reported in parentheses. ALI/ARDS, acute lung injury/acute respiratory distress syndrome; COPD, chronic obstructive pulmonary disease; MV, mechanical ventilation; NS, not significant; SAPS II, Simplified Acute Physiology Score II.

ISSN: 1364-8535