Smear results in the diagnosis of mycobacterioses using blue light fluorescence microscopy.

AUTOR(ES)

Pollock, H M

RESUMO

Examination of 6,880 sputum specimens from untreated patients disclosed that 3.1% were positive for mycobacteria by fluorescence microscopy, and 92.5% of these has positive cultures. There was a positive correlation between the number of organisms seen on smear and growth on culture. All specimens with positive smears and negative cultures contained rare or few acid-fast bacilli on the smear. Eighty-two percent of the specimens with positive cultures and negative smears yielded less than 25 colonies, whereas there were greater than 25 colonies from 93% of the specimens with positive smears and cultures. In a low prevalence, general hospital population, the primary acid-fast smear continued to be a reliable diagnostic tool.

Documentos Relacionados

• Light emitting diode fluorescence microscopy versus Ziehl–Neelsen smear microscopy for the diagnosis of pulmonary tuberculosis
• Comparison of the results of asbestos fibre dust counts in lung tissue obtained by analytical electron microscopy and light microscopy.
• Sensory nerves in the mammalian urinary tract. An evaluation using light and electron microscopy.
• Diagnosis of gonorrhoea by microscopy.
• Rapid processing of fetal skin for prenatal diagnosis by light and electron microscopy.