Characteristics of microorganisms isolated from the 47 ventilator-associated pneumonia patients and mortality rate according to adequacy/inadequacy of initial antibiotic therapy
| Isolates n | Mortality rate % | ||||
| Adequate | Inadequate | Total | Adequate | Inadequate | |
| Gram-negative organisms | |||||
| Pseudomonas aeruginosa | 13 | 3 | 31 | 23 | 66 |
| Klebsiella pneumoniae | 3 | 0 | 33 | 33 | |
| Klebsiella oxytoca | 1 | 2 | 66 | 0 | 100 |
| Serratia marcescens | 1 | 1 | 50 | 0 | 100 |
| Escherichia coli | 3 | 0 | 0 | 0 | |
| Enterobacter aerogenes | 1 | 0 | 0 | 0 | |
| Moraxella catarrhalis | 0 | 1 | 0 | 0 | 0 |
| Morganella morganii | 1 | 0 | 0 | 0 | 0 |
| Proteus mirabilis | 1 | 0 | 0 | 0 | |
| Citrobacter koseri | 1 | 0 | 0 | 0 | |
| Haemophilus influenzae | 3 | 0 | 0 | 0 | |
| Gram-positive organisms | |||||
| Enterococcus feacalis | 1 | 0 | 0 | 0 | |
| MSSA | 7 | 0 | 0 | 0 | 0 |
| MRSA | 4 | 1 | 40 | 50 | 0 |
| CN Staphylococcus | 3 | 1 | 50 | 33 | 100 |
MSSA: methicillin-sensitive Staphylococcus aureus; MRSA: methicillin-resistant Staphylococcus aureus; CN: coagulase negative.