Acinetobacter baumannii Infection in Prior ICU Bed Occupants Is an Independent Risk Factor for Subsequent Cases of Ventilator-Associated Pneumonia

Table 3

Risk factors for VAP due to Acinetobacter baumannii.

	Non-VAP; 𝑛=147	AbVAP; 𝑛=22	VAP due to other pathogens; 𝑛=24
Enteral feeding	79 (54%)*	17 (77%)	19 (79%)
Parenteral feeding	135 (92%)	20 (91%)	21 (88%)
Blood transfusion in ICU	31 (21%)*	9 (41%)	12 (50%)
Corticosteroids in ICU	42 (29%)	7 (32%)	8 (32%)
BSI in ICU	26 (18%)	7 (32%)	6 (25%)
Infection on admission	53 (36%)	11 (50%)	10 (42%)
Blood transfusion on admission	8 (5%)	1 (5%)	0%
Previous surgery	19 (13%)	2 (9%)	2 (8%)
Preceding intake of antibiotics	57 (39%)	12 (55%)	9 (38%)
Preceding corticosteroid treatment	7 (5%)	0%	1 (4%)
Previous hospitalization	60 (41%)	10 (46%)	9 (38%)
Previous patient with Ab infection	48 (33%)*	17 (77%)	14 (58%)
ICU stay (prior VAP)	12 ± 9	12 ± 11	15 ± 10

Data are presented as 𝑛 (%) or mean (±SD).
VAP: ventilator-associated pneumonia, ICU: intensive care unit, BSI: bloodstream infections, and Ab: Acinetobacter baumannii.
Previous patients with Ab infection were considered those who were hospitalized in ICU during 10 days preceding the VAP diagnosis or at any time for patients without VAP.
^∗𝑃 value between AbVAP and non-VAP patients.
No significant differences were observed between AbVAP patients and patients with VAP by other agents.