Evaluation of sensitivity and specificity of tuberculosis diagnostic tools among HIV positive patients: A cross-sectional study

  • Yousef Alimohamadi Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences Tehran, Iran AND Department of of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  • Parvin Afsar-kazerooni HIV Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
  • Mojtaba Sepandi Health Research Center, Lifestyle Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
  • Shahla Chaichian Minimally Invasive Techniques Research Center of Tehran Medical Sciences Branch, Islamic Azad University, Tehran, Iran.
  • Hamidreza Tabatabaee Department of Epidemiology, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran.
  • Zahra Kashi Pars Advanced and Minimally Invasive Medical Manners Research Center, Pars Hospital, Iran University of Medical Sciences Tehran, Iran
  • Manije Alimohammadi Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, IR Iran
  • Firooz Esmaeilzadeh Department of Health Economics & Management, School of Public Health, Tehran University of Medical, Tehran, Iran
Keywords: co-infection, HIV/AIDS, sputum culture, sputum smear, Tuberculosis

Abstract

Background & Aim: Tuberculosis is the major cause of morbidity and mortality among HIV patients. Thus, early diagnosis of Tuberculosis among these patients is important. The purpose of the present study was to determine the Sensitivity, Specificity, PPV and NPV for tools of diagnosing TB among HIV patients referred to behavioral disorder counseling center of Shiraz city.Methods & Materials: In this cross sectional study, 250 HIV+ patients in Shiraz were evaluated. For each patient, three sputum smears and a Chest X-ray and PPD was taken. Sensitivity, specificity, and positive and negative predictive values were determined based on the results of sputum cultures as a gold standard.Results: Among 250 HIV+ individuals who entered the study, 8 (3.2 %) were diagnosed with tuberculosis. The sensitivity, specificity, PPV and NPV for chest x-ray were 62.5%, 96%, 38% and 98.7%, respectively. Also they were 62.5%, 98.7%, 62.5% and 98.7% for AFB 1, and 25%, 99.5%, 66% and 97.5% for AFB 2. Finally, these factors were 99.5%, 99.5%, 66% and 97.5% for AFB 3.Conclusion: The prevalence of TB among HIV+ patients referring to the behavioral disease counseling center in Shiraz was lower than in other endemic areas of developing countries. The screening tools for diagnosis of tuberculosis included the chest x-ray and Acid Fast Bacilli and PPD test in order to find out the important role of detecting TB disease among HIV-infected people.

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Published
2018-10-31
How to Cite
1.
Alimohamadi Y, Afsar-kazerooni P, Sepandi M, Chaichian S, Tabatabaee H, Kashi Z, Alimohammadi M, Esmaeilzadeh F. Evaluation of sensitivity and specificity of tuberculosis diagnostic tools among HIV positive patients: A cross-sectional study. jbe. 4(2):67-2.
Section
Original Article(s)