Clinical features of Escherichia coli pneumonia.

Escherichia coli pneumonia was clinically reviewed. Twenty-two patients with E. coli pneumonia were admitted for treatment to Kawasaki Medical School Kawasaki Hospital, between January 2006 and December 2008. Clinical features were retrospectively reviewed. Results showed that: (1) hospital-acquired pneumonia occurred in elderly patients with underlying diseases, such as cerebrovascular disease, diabetes mellitus, or chronic obstructive pulmonary disease; (2) more patients had complications of urinary-tract infection or alimentary infection due to E. coli; (3) previous administration of antibacterial agents did not become a risk factor; (4) resistance to ampicillin (ABPC) and levofloxacin (LVFX) was observed; and (5) mortality was 22.7%.