Flores AA, Llaca DJM, Ramos PEG

Language: Spanish
References: 18
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ABSTRACT

The direct microscopic exam is the most useful tool in the diagnosis, control and treatment of the tuberculosis, mainly in countries in development. The purpose was to demonstrate if difference existed in the sensibility and specificity in the direct microscopic exam of extensive area (BACEX) with regard to that of reduced area (BACRED). it was a study carried out in 100 patients' that went to the Hospital University Doctor José Jose Eleuterio González UANL (Monterrey, N.L, México). The sputum should have quality and aspect, content in a plastic recipient of high density, translucent and sterile, it was standardized the observation area, the quantity of sample and the observers' experience. 58% was of the masculine and, feminine 42%; age average was of 49 years (range 11 at 103), 76% had the negative cultivation, positive 23% for Mycobacterium tuberculosis, 1% for Mycobacterium chelonae. The BACEX observed by inexpert personal had a sensibility of 45% (IC95 0.25, 0.65) and specificity of 93% (IC95 0.88, 0.98), for the BCRED the sensibility was of 54% (IC95 0.43, 0.65) and specificity of 93% (IC95 0.88, 0.98); The BACEX and the BACRED observed by the fairly expert personal, the sensibility was of 75% (IC95 0.58, 0.92) and specificity of 98% (IC95 0.95, 1.00); for the expert, the sensibility it was of 79% (IC95 0.63, 0.95) and specificity of 100%. he/she was not significant difference between the sensibility and specificity of both methods, the experience was a decisive factor that influenced in the value diagnosis of the direct microscopic exam, all laboratory that it carries out direct microscopic exam it will establish quality intern's controls and external, the inexpert personal will receive training.

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