Tutik Kusmiati, Tutik and Ni Made Mertaniasih, Ni Made and Johanes Nugroho Eko Putranto, Johanes and Budi Suprapti, Budi and Soedarsono, Soedarsono and Nadya Luthfah, Nadya and Winariani Koesoemoprodjo, Winariani and Aryani Prawita Sari, Aryani The role of C-Reactive protein as an inflammatory marker to predict prolonged QTc interval in rifampicin-resistant tuberculosis patients: A case-control study. Annals of Medicine and Surgery. ISSN 2049-0801

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Abstract

Abstract Background long-term use of anti-tuberculosis drugs (ATD) increases the risk of QTc prolongation, while C-reactive protein (CRP) can be used as an inflammatory marker of Mycobacterium tuberculosis infection. Objective: correlation of CRP on the QTc interval in Rifampicin-resistant tuberculosis (RR-TB) patients with the short regimen. Methods An observational study was conducted in Rifampicin-resistant tuberculosis (RR-TB) patients from 2 groups, patients on intensive phase and patients on continuation phase. CRP levels were measured from blood samples and measured automatically using the immunoturbidimetric assay. QTc interval was calculated using electrocardiography. Levels of CRP levels and QTc interval between the 2 groups were analyzed. The statistical analysis used includes the independent t-test, Mann Whitney test, and Rank Spearman test with p = 0.05. Results Forty-five eligible RR-TB patients were included in this study. CRP levels and QTc intervals between 2 groups (intensive and continuation phase) showed significant difference with p < 0.001 but found no significant correlation of CRP levels and QTc interval in both intensive and continuation phase with p = 0.226 and 0.805, respectively. A higher level of CRP strongly indicated the inflammation caused by RR-TB infection at the early phase of the disease, but not correlated with QTc interval in RR-TB patients. Conclusion Levels of CRP and QTc interval do not correlate in RR-TB patients and can not be used to be the marker of QTc prolongation in RR-TB Patients.

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