Causative bacteria of ventilator-associated pneumonia in intensive care unit in Bahrain: Prevalence and antibiotics susceptibility pattern

Table 3 Most common organisms isolated among patients with ventilator-associated pneumonia, n (%)

Organism	Total	Early-onset VAP (Number 9)		Late-onset VAP (Number 37)
		Number (of total)	MDR	Number (of total)	MDR
Total gram negative	38 (82.6)	8 (21)	6 (75)	30 (79)	21 (70)
Acinetobacter baumannii	19 (50)	4 (21)	4 (100)	15 (79)	14 (93)
Klebsiella pneumoniae	8 (21.1)	3 (37.5)	2 (66.6)	5 (62.5)	5 (100)
Pseudomonas aeruginosa	3 (9)	0	0	3 (100)	1 (33.3)
Stenotrophomonas maltophilia	5 (13.1)	0	0	5 (100)	0
Enterobacter asburiae	1 (2.6)	1 (100)	0	0	0
E coli	1 (2.6)	0	0	1	1 ESBL (100)
Hemophilus influenzae	1 (2.6)	0	0	1 (100)	0
Total gram positive	5 (11)	0	0	5 (100)
Staph aureus	4 (80)	0	0	4 (100)	0
MRSA	1 (20)	0	0	1 (100)	0
	0	0	0	0	0
	0	0	0	0	0
Fungal infection
Candida species	3 (100)	1 (33.3)	0	2 (66.6)	0
Total microorganisms	46 (100)	9 (19.6)	6 (13)	37 (80.4)

VAP: Ventilator-associated pneumonia; MDR: Multidrug-resistant; ESBL: Extended spectrum beta-lactamase; MRSA: Methicillin-resistant staphylococcus aureus.