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Hospital-acquired pneumonia. Attributable mortality and morbidity
1Hospital Epidemiology, Chang Gung Memorial Hospital, Taipei, Taiwan.
American Journal of Epidemiology
|June 1, 1989
Summary
Nosocomial pneumonia, a hospital-acquired infection, significantly increases patient mortality and hospital stays. This study found it responsible for 33% of deaths and prolonged hospitalization, highlighting its substantial impact.
Area of Science:
- Infectious Diseases
- Hospital Epidemiology
- Critical Care Medicine
Background:
- Nosocomial pneumonia represents a significant challenge in healthcare settings, contributing to patient morbidity and mortality.
- Understanding the risk factors and outcomes associated with hospital-acquired pneumonia is crucial for effective patient management and resource allocation.
Purpose of the Study:
- To quantify the incidence, mortality, and economic impact of nosocomial pneumonia.
- To identify key risk factors associated with mortality and prolonged hospitalization in patients with nosocomial pneumonia.
Main Methods:
- Retrospective analysis of 1,001 consecutive nosocomial pneumonia episodes in 901 patients over four years.
- Utilized stepwise logistic regression and multiple regression analysis to identify predictors of mortality and length of stay.
- Conducted a matched cohort study to determine infection-attributable mortality and excess hospital stay.
Main Results:
- The incidence was 8.6 episodes per 1,000 admissions, with an overall case fatality rate of 30%.
- Factors associated with mortality included time to pneumonia, advanced age, prior mechanical ventilation, and neoplastic disease.
- Prolonged hospitalization was linked to post-tracheostomy status, prior mechanical ventilation, immunosuppression, nasogastric intubation, and prior bacteremia.
Conclusions:
- Nosocomial pneumonia accounts for approximately 33% of crude mortality and significantly prolongs hospital stays.
- The findings underscore the substantial clinical and economic burden of hospital-acquired pneumonia, emphasizing the need for prevention strategies.