Factors Predicting Ventilator Dependence in Patients with Ventilator-Associated Pneumonia
Table 3
Ventilator-associated pneumonia related characteristicsa.
Characteristics
Ventilator independence
Ventilator dependence
value
Ventilation day before VAPb
9.58 Ā± 4.66c
10.76 Ā± 5.44c
0.29
Organism, number (%)
āP. aeruginosa
13 (36)c
25 (46)c
0.34
āA. baumannii
8 (22)c
14 (26)c
0.69
āS. maltophilia
4 (11)c
12 (22)c
0.18
āK. pneumoniae
4 (11)c
9 (17)c
0.46
āS. aureus
9 (25)c
13 (24)c
0.92
Polymicrobial infection, number (%)
11 (31)c
21 (39)c
0.42
CPISb
8.64
8.83
0.45
BALb, number (%)
10 (28)c
25 (46)c
0.08
Appropriateness of initial empiric antibiotic, number (%)
<0.001
āAppropriate
30 (83)c
20 (37)c
āInappropriate
1 (3)c
22 (41)c
āIndeterminate
5 (14)c
12 (22)c
Initial Fi02b (%)
41.31 Ā± 8.24c
48.43 Ā± 12.09c
0.003
Initial MAPb
18.78 Ā± 5.45c
23.01 Ā± 6.71c
0.002
Initial OIb
7.81 Ā± 3.55c
14.19 Ā± 7.34c
<0.001
Initial Pa02b
105.36 Ā± 43.52c
103.89 Ā± 45.46c
0.88
Initial vital sign
āTemperature
37.74 Ā± 1.35c
38.34 Ā± 3.86c
0.31
āRespiratory rate
23.04 Ā± 8.21c
19.76 Ā± 4.99c
0.02
āHeart rate
98.86 Ā± 28.14c
95.91 Ā± 19.43c
0.56
āMean blood pressure
85.31 Ā± 16.56c
89.70 Ā± 5.52c
0.25
aContinuous variables were analyzed by Studentās -test or Mann-Whitney test, and categorical data by chi-square test.
bBAL: bronchoalveolar lavage, CPIS: Clinical Pulmonary Infection Score; FI02: fraction inspired oxygen, MAP: mean airway pressure, OI: oxygenation index, Pa02: arterial oxygen tension, VAP: ventilator associated pneumonia.
cVariables are expressed as mean (standard deviation) and categorical data are expressed as number (percentage).