Ketepatan Pemeriksaan Radiologi dan BTA Apusan Langsung dengan Kultur dalam Mendiagnosis Tuberkulosis Paru di Medan

Abstract

Lung tuberculosis is one of transmitted diseases which are caused by Mycobacterium tuberculosis through nuclei droplet. Diagnosis for lung tuberculosis is usually detected by the examination of direct sputum removal, thorax photo, and Culture. The type of the research was descriptive study by using diagnostic test and the samples consisted of sputum and thorax photo. The sputum was taken accidentally, in the morning, and accidentally which was examined by using Ziehl Nelsen method and culture. Objective of the research: The objective of the research was to find out the effectiveness of examining direct BTA removal and radiology which were compared with Culture.. Materials and Method: The samples were taken from Private Practice of Tuberculosis Specialists in Medan and in BP4, Medan which had fulfilled inclusive criteria, radiology examination and three times of phlegm taking for direct BTA removal and culture were performed; after that, radiology diagnostic test for direct BTA removal was compared with Culture. Result of the research: 60 samples on direct removal method indicated the value of sensitivity of 59.38%, specificity of 92. 86%, value of positive prediction of 90. 48%, value of negative prediction of 66. 7%, ratio of positive likelihood of 8.31, and ratio of negative likelihood of 0. 44. Radiology method indicated sensitivity of 62.63%, specificity of 82.14%, the value of positive prediction of 80. 77%, value of negative prediction of 67.65%, ratio of positive likelihood of 3. 67, and ratio of negative likelihood of 0. 4 2. Of the 21 samples, positive BTA which underwent minimum lung damage of 4 (6. 7%), moderate damage of9 (15.0%), and wide damage of5 (8.3%). Conclusion: The result of the research showed that radiology examination indicated that the value of sensitivity was higher than direct removal method, compared with culture as gold standard in BTA examination. That clinical benefit was bigger in direct removal method can be seen from the value of positive prediction which was higher than radiology method so that it is recommended that both examination techniques be used to diagnose lung tuberculosis.