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1.
Enferm Infecc Microbiol Clin ; 26(7): 430-6, 2008.
Article in Spanish | MEDLINE | ID: mdl-18842239

ABSTRACT

Microbiological diagnosis of bacterial lower respiratory tract infections has relevant limitations and related controversy, depending on the clinical setting and diagnostic methods used, and its value is contingent on an accurate clinical diagnosis and previous antimicrobial therapy. The limitations reside in a low diagnostic yield of the causative agent and the difficulty of determining the clinical significance of the agents recovered. This report examines the current microbiological diagnostic yield of the main clinical entities and etiological agents, indications for invasive or non-invasive specimen collection procedures, and proper specimen processing and culture in the appropriate media. Criteria regarding specimen suitability and indications for quantitative cultures are established. Criteria for evaluating the results are provided, and the current fast diagnostic techniques are described.


Subject(s)
Bacteriological Techniques , Bronchitis/diagnosis , Pneumonia, Bacterial/diagnosis , Antigens, Bacterial/analysis , Bronchitis/microbiology , Bronchoscopy , Community-Acquired Infections/microbiology , Cross Infection/microbiology , Humans , Pneumonia, Bacterial/microbiology , Specimen Handling , Time Factors
2.
Article in Es | IBECS | ID: ibc-70000

ABSTRACT

El diagnóstico microbiológico de las infecciones bacterianas del tracto respiratorio inferior (TRI) presenta importantes limitaciones y controversias según los diferentes cuadros clínicos y los métodos diagnósticos, y su valor depende, a su vez, de un diagnóstico clínico correcto y de un tratamiento antibiótico previo. Las limitaciones estriban en la baja rentabilidad del aislamiento del agente causal y en la difícil valoración de los microorganismos aislados en relación con su significación clínica. Se examina aquí el rendimiento actual del diagnóstico microbiológico de los principales cuadros clínicos y agentes etiológicos, los procedimientos de recogida invasivos o no invasivos de los diferentes tipos de muestras, y su procesamiento y siembra en medios de cultivo. Se establecen los criterios de aceptación de las muestras y la indicación de realización de cultivos cuantitativos. Se exponen los criterios para la interpretación de los resultados y, por último, se describen las técnicas de diagnóstico rápido actuales (AU)


Microbiological diagnosis of bacterial lower respiratory tract infections has relevant limitations and related controversy, depending on the clinical setting and diagnostic methods used, and its value is contingent on an accurate clinical diagnosis and previous antimicrobial therapy. The limitations reside in a low diagnostic yield of the causative agent and the difficulty of determining the clinical significance of the agents recovered. This report examines the current microbiological diagnostic yield of the main clinical entities and etiological agents, indications for invasive or non-invasive specimen collection procedures, and proper specimen processing and culture in the appropriate media. Criteria regarding specimen suitability and indications for quantitative cultures are established. Criteria for evaluating the results are provided, and the current fast diagnostic techniques are described (AU)


Subject(s)
Humans , Respiratory Tract Infections/microbiology , Bacteria/isolation & purification , Microbiological Techniques/methods , Vaccines/administration & dosage , Specimen Handling/methods
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