科研之友
微信
新浪微博
Facebook
分享链接
摘要
objectives: to analyze the epidemiology and to identify associated factors for community- and nosocomial-acquired bacteremia in the elderly (be). patient and methods: elderly patients diagnosed of bacteremia were selected. community- or acquired-bacteremia were definided according to standard criteria. the severity of underlying diseases was classified as non-fatal, ultimately fatal, or rapidly fatal, according to mccabe-jackson criteria. multivariate analysis by logistic regression was used to identify associated factors to bacteremia. results: two hundred and forty-two cases of be were selected. the mean age was 72,5 years, 50% occurred in males. one hundred and thirty cases (53,7%) were community-acquired and 112 (46,3%) cases were nosocomial-acquired be. most common underlying diseases were diabetes mellitus (30,6%%), chronic obstructive pulmonary disease (25,6%) and neoplasia (24%). gram-negative bacteria were more frequently isolated in community-acquired be, while gram-positive cocci were more common in nosocomial-acquired be. sources of infection were: vascular (19%), respiratory tract (18,6%), biliary tract (17,8%) and urinary tract (8,3%). the factors associated with nosocomial-acquired be were (adjusted or; 95%ci): underlying diseases (5,4; 2,7-10,8), neoplasia (2,5; 1,3-4,9) and vascular origin (2,2; 1,1-4,5). fifty-two patients died (23,1%). conclusions: be occurs in elderly patients debilitated with well-defined underlying diseases. be is associated to high mortality.
