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Table 1 Baseline characteristics of patients at entry into the study

From: Effects of mechanical insufflation-exsufflation in preventing respiratory failure after extubation: a randomized controlled trial

  Group A
(n = 40)
Group B
(MI-E)
(n = 35)
P
Age (years) 62 ± 19.2 61.4 ± 15.1 NS
Sex (M/F) 21/19 28/7 NS
SAPS II 47.8 ± 17.7 45 ± 15 NS
Duration of MV (days) 9.4 ± 4.8 10.5 ± 4.1 NS
Patients with chronic pulmonary
disorders (n, %)
9 (23%) 7 (20%) NS
Patients with hypoxemic
respiratory failure (n,%)
24 (60%) 18 (52%) NS
Reasons for MV (n)    
COPD exacerbations 6 4  
Congestive heart failure 5 4  
Community-acquired pneumonia 11 6  
Hospital-acquired pneumonia - 2  
Postoperative respiratory failure 5 8  
Acute lung injury - 1  
Thoracic trauma 6 3  
Sepsis 7 4  
Cardiac arrest - 3  
  1. Data are presented as mean ± standard deviation. COPD, chronic obstructive pulmonary disease; MV, mechanical ventilation; NS, nonsignificant; SAPS II, New Simplified Acute Physiology Score.