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Table 1 Baseline characteristics of enrolled patients

From: Optimization of ventilator setting by flow and pressure waveforms analysis during noninvasive ventilation for acute exacerbations of COPD: a multicentric randomized controlled trial

 

Optimized Ventilation

Standard ventilation

P

35

35

 

Age, yrs

76 ± 10

79 ± 7

.173

Men, n (%)

24 (69)

21 (60)

.618

BMI, Kg/m2

25.5 ± 6.2

27.0 ± 6.3

.302

BMI > 30, n (%)

7 (20)

8 (23)

.771

LTOT, n (%)

25 (71)

20 (57)

.318

Domiciliary NIV, n° (%)

3 (9)

7 (20)

.306

Pre-NIV data

   

   Respiratory rate

35 ± 6

33 ± 7

.093

   pH

7.27 ± .05

7.28 ± .05

.450

   PaO2/FiO2

222 ± 87

226 ± 56

.796

   PaCO2, mmHg

76 ± 17

71 ± 12

.141

   HCO3-, mmol/l

33 ± 6

32 ± 7

.569

  1. Data reported as mean ± standard deviation. No significant differences between groups. BMI, body mass index; LTOT, long-term oxygen therapy; NIV, noninvasive ventilation.