نتایج جستجو برای: smear
تعداد نتایج: 13020 فیلتر نتایج به سال:
BACKGROUND Quick diagnosis of smear-negative pulmonary tuberculosis (TB) and extra-pulmonary TB are urgently needed in clinical diagnosis. Our research aims to investigate the usefulness of the interferon-γ release assay (IGRA) for the diagnosis of smear-negative pulmonary and extra-pulmonary TB. METHODS We performed TB antibody and TB-IGRA tests on 389 pulmonary TB patients (including 120 sm...
Background: Smear negative and culture positive results in pulmonary tuberculosis are not uncommon yet the underlying factors are not well established. Objective: To determine factors associated with smear negative and culture positive results. Methods: Pulmonary tuberculosis patients were consecutively recruited for 12 months from five health facilities in Mwanza region, Tanzania. Sputum exami...
BACKGROUND Determining the temporal variation and forecasting the incidence of smear positive tuberculosis (TB) can play an important role in promoting the TB control program. Its results may be used as a decision-supportive tool for planning and allocating resources. The present study forecasts the incidence of smear positive TB in Iran. METHODS This a longitudinal study using monthly tuberc...
SETTING Xpert® MTB/RIF is the most widely used molecular assay for rapid diagnosis of tuberculosis (TB). The number of polymerase chain reaction cycles after which detectable product is generated (cycle threshold value, CT) correlates with the bacillary burden.OBJECTIVE To investigate the association between Xpert CT values and smear status through a systematic review and individual-level data ...
BACKGROUND Gynecological cancers are an important cause of morbidity and mortality. Screening with mammography and Pap smear reduces breast and cervical cancer mortality. Neverthless, high participation rates are needed to ensure their effectiveness. We sought to assess the use of mammography and Pap smear and analyzed predictors of attendance at these cancer screenings in a large metropolitan ...
Normal observers perceive less motion smear if a target moves in the opposite direction of a smooth eye movement than if the target moves to produce the same retinal image speed in the same direction as the eye movement. This study investigated whether a similar asymmetrical attenuation of perceived motion smear occurs in observers with infantile nystagmus (IN). Observers (N=3) viewed a laser s...
BACKGROUND Decentralization of DOTS has increased the number of cured smear-positive tuberculosis (TB) patients. However, the rate of recurrence has increased mainly due to HIV infection. Recurrence rate could be taken as an important measure of long-term success of TB treatment. We aimed to find out the rate of recurrence in smear-positive patients cured under DOTS in southern Ethiopia. METH...
BACKGROUND The purpose of this study was to investigate the smear layer removal and erosive capacity of various irrigation solutions with sequential use of NaOCl on instrumented root canal walls. METHODS The root canals of single-rooted teeth were instrumented with ProTaper rotary instrument. Then, the teeth were randomly divided into five experimental groups. The root canals were irrigated w...
SETTING The potential cost-effectiveness of improved diagnostic tests for tuberculosis (TB) in resource-limited settings is unknown. OBJECTIVE To estimate the incremental cost-effectiveness of a hypothetical new point-of-care TB diagnostic test in South Africa, Brazil and Kenya. DESIGN Decision-analysis model, adding four diagnostic interventions (sputum smear microscopy, new test, smear pl...
DNA degradation (which results in a smear pattern) occurs with almost 50% of Mycobacterium abscessus strains during pulsed-field gel electrophoresis (PFGE). We assessed the potential benefit of using thiourea-containing buffer with M. abscessus by studying 69 isolates not previously typeable by PFGE (i.e., those with a smear pattern). Random (epidemiologically unrelated) isolates that were type...
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