101. Immune dysfunction prior to Staphylococcus aureus bacteremia is a determinant of long-term mortality
- Author
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Jesse B. Hall, Michael Z. David, John P. Kress, and Jared A. Greenberg
- Subjects
Bacterial Diseases ,Male ,Critical Care and Emergency Medicine ,lcsh:Medicine ,Bacteremia ,medicine.disease_cause ,0302 clinical medicine ,Risk Factors ,Epidemiology ,030212 general & internal medicine ,lcsh:Science ,0303 health sciences ,Multidisciplinary ,Mortality rate ,Statistics ,Middle Aged ,Staphylococcal Infections ,3. Good health ,Infectious Diseases ,Immune System Diseases ,Staphylococcus aureus ,Medicine ,Female ,Research Article ,Adult ,medicine.medical_specialty ,Clinical Research Design ,Staphylococcal infections ,Sepsis ,03 medical and health sciences ,Internal medicine ,Confidence Intervals ,medicine ,Humans ,Statistical Methods ,Retrospective Studies ,Aged ,Proportional Hazards Models ,030306 microbiology ,Proportional hazards model ,business.industry ,lcsh:R ,Bloodstream Infections ,Retrospective cohort study ,medicine.disease ,Immunology ,Clinical Immunology ,lcsh:Q ,business ,Mathematics - Abstract
Purpose The clinical implications for patients who survive serious infections are not well understood. It has been hypothesized that the excess mortality for survivors of sepsis observed in epidemiological studies is due to increased vulnerability to subsequent infections. We undertook this study to identify characteristics of patients who are at high risk for death after surviving a common type of blood-stream infection. Materials and Methods At a single academic medical center, 237 patients with Staphylococcus aureus bacteremia admitted during a three-year period were retrospectively identified. The primary outcomes were 30-day and 31 to 90-day mortality after the first positive blood culture. The primary predictor variable of interest was clinical immune dysfunction prior to bacteremia. Results The 30-day mortality was not significantly different for patients with and without prior immune dysfunction. However, during days 31 to 90, 11 patients (20%) with prior immune dysfunction compared to 10 patients (8.6%) without prior immune dysfunction died (OR 2.59, 95% CI 1.03–6.53, p = 0.04). In a Cox-proportional hazard model controlling for age, there was a significant association between prior immune dysfunction and greater 31 to 90 day mortality (HR 2.44, 95% CI 1.01–5.90, p = 0.05) and a non-significant trend towards occurrence of subsequent infections and greater 31 to 90 day mortality (HR 2.12, 95% CI 0.89–5.07, p = 0.09). Conclusions Patients with prior immune dysfunction are at high risk for death 31 to 90 days, but not
- Published
- 2014