Gram-negative bloodstream infections. 2008

Patricia Muñoz, and Ana Fernandez Cruz, and Marta Rodríguez-Créixems, and Emilio Bouza
Microbiology and Infectious Disease Department, Hospital General Universitario Gregorio Marañón, CIBER de Enfermedades Respiratorias, Universidad Complutense, Madrid, Spain. pmunoz@micro.hggm.es

Over the last 22 years we have prospectively recorded data for bloodstream infections (BSIs) in our institution. We reflect the experience of a tertiary teaching hospital with 1750-2500 beds that served a population ranging during the study period from 650,000 to 750,000 inhabitants. Definitions and microbiological methods were standard. The microbiological workload of blood cultures was analysed and the evolution of the incidence of BSI episodes, provided as episodes per 1000 admissions and per 100000 inhabitants, is reported. During the study period, our institution had over one million admissions; blood culturing increased from 299 blood cultures/1000 admissions in the year 1985 to 720/1000 admissions in 2006. Overall, there were 65475 blood cultures with recovery of significant microorganisms, representing 27 419 episodes of significant BSI (22626 patients). The present paper describes the Gram-negative organisms recovered from the blood cultures and discusses their clinical significance.

UI MeSH Term Description Entries
D003428 Cross Infection Any infection which a patient contracts in a health-care institution. Hospital Infections,Nosocomial Infections,Health Care Associated Infection,Health Care Associated Infections,Healthcare Associated Infections,Infection, Cross,Infections, Hospital,Infections, Nosocomial,Cross Infections,Healthcare Associated Infection,Hospital Infection,Infection, Healthcare Associated,Infection, Hospital,Infection, Nosocomial,Infections, Cross,Infections, Healthcare Associated,Nosocomial Infection
D006090 Gram-Negative Bacteria Bacteria which lose crystal violet stain but are stained pink when treated by Gram's method. Gram Negative Bacteria
D006761 Hospitals Institutions with an organized medical staff which provide medical care to patients. Hospital
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013030 Spain Country located between France on the northeast and Portugal on the west and bordered by the Atlantic Ocean and the Mediterranean Sea. The capital is Madrid. Balearic Islands,Canary Islands
D015994 Incidence The number of new cases of a given disease during a given period in a specified population. It also is used for the rate at which new events occur in a defined population. It is differentiated from PREVALENCE, which refers to all cases in the population at a given time. Attack Rate,Cumulative Incidence,Incidence Proportion,Incidence Rate,Person-time Rate,Secondary Attack Rate,Attack Rate, Secondary,Attack Rates,Cumulative Incidences,Incidence Proportions,Incidence Rates,Incidence, Cumulative,Incidences,Person time Rate,Person-time Rates,Proportion, Incidence,Rate, Attack,Rate, Incidence,Rate, Person-time,Rate, Secondary Attack,Secondary Attack Rates
D016470 Bacteremia The presence of viable bacteria circulating in the blood. Fever, chills, tachycardia, and tachypnea are common acute manifestations of bacteremia. The majority of cases are seen in already hospitalized patients, most of whom have underlying diseases or procedures which render their bloodstreams susceptible to invasion. Bacteremias
D016905 Gram-Negative Bacterial Infections Infections caused by bacteria that show up as pink (negative) when treated by the gram-staining method. Bacterial Infections, Gram-Negative,Infections, Gram-Negative Bacterial,Bacterial Infection, Gram-Negative,Gram Negative Bacterial Infections,Gram-Negative Bacterial Infection,Infection, Gram-Negative Bacterial

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