Klebsiella pneumoniae
ranks high as a cause of adult pneumonia requiring hospitalization in Malaysia. To study whether extended-spectrum b-lactamase (ESBL) producing
K. pneumoniae was linked to hospital outcomes, we retrospectively studied 441 cases of adult respiratory tract infections with microbial proven
K. pneumoniae from an urban-based university teaching hospital between 2003 and 2004. 47 (10.6%) cases had ESBL. Requirement for ventilation and median length of hospital stay, were greater in 'ESBL' than in 'non-ESBL' group [34%
vs. 7.4%, p<0.001; 14 days
vs. 5 days, p<0.001 respectively] but not crude hospital mortality rate [21.3%
vs. 12.4%, p=0.092]. There was a four-fold increased risk of requiring ventilation [4.61 (2.72-7.85)] when ESBL was present. Our findings support the association of ESBL producing
K. pneumoniae with adversed hospital outcomes and reiterate the need for vigilance on the part of treating clinicians.
