Background And Objective: To analyze the risk factors associated with mortality in invasive pneumococcal disease in the university hospital Fundación Jiménez Díaz (Madrid, Spain) during 11 years.
Patients And Method: We performed a retrospective study of patients attending the emergency service of the hospital from January 1993 to August 2003. We registered data on mortality, clinical and microbiological evolution and relapses.
Results: We studied 263 patients with pneumococcal baceteremia and invasive disease caused by Streptococcus pneumoniae (pneumonia, meningitis, sepsis, bacteremia of unknown origin and oligoarthritis). Mortality was 12.5%. Variables associated with mortality in a logistic regression analysis included absence of leukocytosis (p = 0.04), acidosis (p < 0.01), respiratory signs and symptoms (tachypnea, pleuritic pain) (p = 0.02), and neurologic manifestations (decreased consciousness level; (p < 0.01).
Conclusion: Patients at highest risk of death because of invasive pneumococcal disease are critically ill, with no leukocytosis, with severe respiratory or neurological symptoms and undergoing invasive procedures such as mechanical ventilation and tracheostomy.
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