Assessment of Sensitivity Pattern of Tuberculosis in Response to 1st Line Anti Tuberculosis Drugs.

Ammar Shafiq, Ali Mustafa, Bakht Bilal


Objective: The main aim of this study was to find the sensitivity pattern of tuberculosis to 1st line of antibiotics.

Place and Duration of Study: This study was carried out in Pulmonology department of Mayo hospital Lahore in a duration of 10 months from March 2018 to December 2019.

Type of Study: Cross sectional.

Materials and Methods: Patients were selected without gender discrimination having age greater than 15 years. Exclusion criteria included the patients who had already used ATT. LJ medium was used for sputum analysis for six weeks. Sensitivity of Mycobacterium was analyzed to 1st line of antibiotics. 2 mcg of streptomycin, 100 mcg for pyrazinamide, 0.2 mcg for isoniazid, 5 mcg of ethambutol and 1 mcg of rifampicin were the standard dose of drugs which was used in LJ medium to check the sensitivity.

Results: A total of 115 cases were included in this study. Among these patients 72 (62.60%) were males. The mean age of patients was 35 years. In 36 (32.17%) of the cases drug resistance was seen and in some cases resistance was seen to more than 1 drug. Streptomycin was the most common drug to which Mycobacterium showed resistance and it included 19 (16.52%) of cases. Second most common involving 17 (14.78%) of cases was isoniazid. In 30 (26.08%) cases resistance was seen to only one drug. Only 2 cases showed resistance to three and four antibiotics.

Conclusion: Almost every third case is resistant to TB antibiotics and highest resistance is seen in case of streptomycin.


ATT. Lowenstein Jensen medium, MTB

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