A Comparative Study of Auramine O Staining Using LED Fluorescent Microscopy with Ziehl –Neelsen Staining in the Examination of Sputum For Acid Fast Bacilli
Journal Title: Journal of Medical Science And clinical Research - Year 2015, Vol 3, Issue 8
Abstract
Background: Despite all interventions, tuberculosis (TB) remains a public health issue in Nigeria. Effective TB treatment and control demand early case detection. The ZN staining technique, which is the method of choice in the DOTS program can have problem of low sensitivity. Hence, the need for more sensitive alternative methods. Use of culture is the gold standard but it is not feasible in resource limited settings. The fluorescent Light Emitting Diode (LED) microscopy (FM) method using auramine O stain offers a viable alternative. Aims and Objectives: To study the efficacy of the fluorescent LED microscopy in the diagnosis of pulmonary tuberculosis (PTB) in comparison with the Z N method and to determine which of the methods is faster in the detection of Acid Fast Bacilli (AFB). Methodology: Early morning sputum samples were collected from 630 pulmonary tuberculosis suspects (PTB) attending the TB (DOTS) centre of Nnamdi Azikiwe University Teaching Hospital, Nnewi, Nigeria. Two smears, measuring 1x2 cm in diameter, made from each specimen received were stained, one with Ziehl Neelsen staining method and the other with auramine O fluorescent staining method. Results: Microscopy results obtained from both methods were recorded according to the IUALTD/WHO guideline as adopted by the National Tuberculosis programme (NTP). The results showed comparable sensitivities. The positivity rate was 51/630(8.1%) for ZN and 55/630(8.7%) for FM. However, FM was found to be faster than ZN technique. Conclusions: The faster reading and the ease of use of the LED fluorescent microscope together with its general acceptability actually support its use in the DOTS program, not as an alternative but as an adjuvant, especially during the introductory phase which should be monitored.
Authors and Affiliations
Okonkwo, R. C
Keywords
Related Articles
- EP ID EP212246
- DOI -
- Views 42
- Downloads 0
Comparative study on the operative outcome of EDH done under Regional Scalp Block and under General Anesthesia
An Epidural hematoma (EDH) is the direct result of physical trauma to the head which occur between inner surface of the skull and outer layer specially occur in children and young adults. In most cases involve arterial d...
Preoperative Investigations in ASA I and II Patients – Do We Really Follow Recommendations?
Background: Pre-anaesthetic check up (PAC) is to assess the clinical condition of patient and advice necessary investigations. This ultimately helps in risk stratification of patients. Though there are recommendations fo...
Psychiatric Co-Morbidities in Individuals with Alcohol Dependence: A Prospective Observational Study
Introduction: Alcohol consumption has been on rise in developing as well as developed world. It is not only associated with pathologies like Peripheral Vascular disease, avascular necrosis of bones, cirrhosis of liver an...
Albinism in India; Social Stigma and Undertreated Entity- A Review
Background: Albinism is autosomal recessive pigmentary disorder, characterized by lack of protective melanin, as a result of which albinos are highly susceptible to sun-induced damage to skin.1 Persistent photosensitivit...
Antibacterial activity of Psidium guajava L. against certain multidrug resistant gram-negative and gram-positive bacteria
Drugs derived from plants play a significant role in the prevention and treatment of human diseases. Psidium guajava L., Myrtaceae, is used widely in traditional medicine used for the treatment of diarrhoea, dysentery, g...