bacteremia

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Related to bacteriemia: septicemia, sepsis

bacteremia:

see septicemiasepticemia
, invasion of the bloodstream by virulent bacteria that multiply and discharge their toxic products. The disorder, which is serious and sometimes fatal, is commonly known as blood poisoning.
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Bacteremia

 

the presence of bacteria in the blood. Bacteria enter the blood of man and animals through injuries of the skin and mucous membranes, and also when there are pathological changes in the lymph nodes, vascular system, and so on. Bacteremia accompanies many infectious diseases, such as leptospirosis, typhus, relapsing fever, and tularemia; it is especially characteristic of intestinal infections—typhoid, paratyphoid, and other salmonelloses; brucellosis, and others—in which it causes generalization of the pathologic process. Bacteremia is most intensely expressed during the acute (generalized) period of a disease. Bacteremia develops under the action of medium and large doses of ionizing radiation as a result of disruption of natural immunity. There is a decrease in the production of antibodies, a decrease in the number of leukocytes and of their phagocytic activity, and also changes in the permeability of tissue barriers and a number of other factors. Bacteremia is a characteristic complication of radiation sickness. As the organism overwhelms the disease (activation of the phagocytic function of the leukocytes, accumulation of antibodies, and so on), bacteremia decreases to the point of complete disappearance.

bacteremia

[′bak·tə′rē·mē·ə]
(medicine)
Presence of bacteria in the blood.
References in periodicals archive ?
En 354 pacientes (50.7%) la bacteriemia era de origen nosocomial y 26.2% del total (n= 183) eran SAMR.
Sin embargo, y a pesar de la asociacion entre enterocolitis necrosante grave y Clostridium spp., la bacteriemia por este ultimo microrganismo es en extremo inusual en neonatos que presentan enterocolitis (17).
Ocasionalmente las ITU pueden presentarse como pielonefrtis aguda del injerto y adquirir diferentes formas clinicas, desde leves hasta incluso el absceso renal (15,21,22), cursando con o sin bacteriemia y/o disfuncion del injerto.
Los hallazgos clinicos de tambien se pueden asociar a los fenomenos patologicos subyacentes de la bacteriemia o la iungemia, con un riesgo mayor hacia el desarrollo de valvulitis, respuesta inmunologica, y embolizacion.
Graft susceptibility to bacteriemia is highest during the first postoperative months and decreases with formation of neointima and healing of the anastomotic sutures [2, 4].
ej., estado inmunodeficiente, ADVP), predisposicion e intervencion reciente con bacteriemia asociada, evidencia de insuficiencia cardiaca congestiva, nuevo trastorno de conduccion, hemocultivo positivo con tipico organismo causante de EI o serologia positiva para fiebre Q cronica (los resultados microbiologicos pueden preceder a las manifestaciones cardiacas), fenomeno vascular o inmunitario(evento embolico, manchas de Roth, hemorragias en astilla, lesiones de Janeway, nodulos de Osler), sintomas y signos neurologicos focales o no especificos, evidencia de embolia/infiltracion pulmonar (EI derecha), y/o abscesos perifericos (renal, esplenico, cerebral, vertebral) de causa desconocida.
Pseudomonas sp., pueden ser parte de la flora normal faringea, otras son patogenas y agentes causales de infecciones nosocomiales, sepsis y bacteriemias a partir de dispositivos medicos como cateteres.
Las condiciones clinicas mas frecuentemente causadas por este microorganismo incluyen bacteriemia relacionada a cateteres intravasculares, peritonitis en pacientes en dialisis peritoneal, neumonia e infecciones urinarias (12, 13, 16-18, 20-24).
aeruginosa es un patogeno oportunista de importancia clinica, causante de infecciones del tracto urinario, vias respiratorias, dermatitis, infecciones de tejidos blandos, bacteriemia, infecciones oseas y articulares, infecciones gastrointestinales, infecciones en pacientes con quemaduras graves, cancer y en pacientes inmunodeprimidos (Todar, 2008).
(7), (18) The source of the bacterial inoculum is believed to be either from distant skin infections with transient bacteriemia or, less commonly, from local vascular or lymphatic contamination.
En un estudio se observo hiperproduccion de AmpC en 20% de los pacientes con bacteriemia por cepas de Enterobacter spp.