Face-mask sampling or sputum to diagnose lung tuberculosis?

Face Mask Sampling for the Detection of Mycobacterium tuberculosis in Expelled Aerosols

BACKGROUND Although tuberculosis is transmitted by the airborne route, direct information on the natural output of bacilli into air by source cases is very limited. We sought to address this through sampling of expelled aerosols in face masks that were subsequently analyzed for mycobacterial contamination. METHODS In series 1, 17 smear microscopy positive patients wore standard surgical face ...

Light-emitting diode with various sputum smear preparation techniques to diagnose tuberculosis.

SETTING Mawenzi Regional Hospital, northern Tanzania. OBJECTIVE To determine the value of light-emitting diode (LED) microscopy in diagnosing tuberculosis (TB) on bleach-treated and direct sputum smears. DESIGN Sputum samples were collected from patients suspected of pulmonary TB who presented consecutively at the laboratory for smear evaluation between December 2009 and February 2010. Fou...

Smear microscopy to diagnose tuberculosis.

urine pcr evaluation to diagnose pulmonary tuberculosis

conclusions with regard to the ease of urine sample preparation and the 100% specificity the pcr method, performing urine pcr could be used as a diagnostic aid in ptb cases obtaining sputum samples is problematic. results results of the current study indicated that 48 (62.3%) patients out of 77 had a positive sputum culture. urine cultures and acid-fast smears were negative. urine pcr-tb was po...

Urine PCR Evaluation to Diagnose Pulmonary Tuberculosis

BACKGROUND Culture and specific staining (including Zeil-Nelson and fluorescent methods) are standard measures for the diagnosis of tuberculosis (TB). These methods are time-consuming and sometimes have a low level of accuracy. In addition, in some cases obtaining samples for smear and culture involves invasive procedures; while in other cases there is no suitable sample for evaluation. Therefo...