https://www.selleckchem.com/products/bpv-hopic.html 26%), 83 (34.87%) and 184 (77.31%) patients, respectively; more frequently amongst patients with moderate/severe disease or mortality. Areas under receiver operating characteristic curves and 95% confidence intervals for serum C-reactive protein, ferritin and LDH were 0.909 (0.854-0.964), 0.915 (0.835-0.995) and 0.863 (0.785-0.942), respectively. C-reactive protein ≥45.5 mg/L had sensitivity 86.36% and specificity 88.89%; serum ferritin ≥723 ng/ml had sensitivity 95.45% and specificity 86.57%, and lactate dehydrogenase ≥428.5 U/L had sensitivity 90.91% and specificity 80.56% for predicting mortality. Levels of the three inflammatory markers at admission can predict mortality in COVID-19 infection. Key Words Coronavirus, Inflammation, Mortality, Outcome, Pakistan. Levels of the three inflammatory markers at admission can predict mortality in COVID-19 infection. Key Words Coronavirus, Inflammation, Mortality, Outcome, Pakistan. To assess and identify the risk of prolonged QT about hydroxychloroquine (HQ) and azithromycin (AZ) used in the treatment of patients with COVID-19. Cohort study. Kartal Dr. Lütfi Kırdar City Hospital, İstanbul, Turkey, from March to May 2020. One hundred and forty-four patients with the diagnosis of COVID-19, confirmed by Rt-PCR (reverse transcription-polymerase chain reaction), were restrospectively reviewed. Patients who were hospitalised, received HQ or HQ plus AZ treatment, had a baseline electrocardiogram (ECG), and had at least one ECG after treatment were included in the study. Patients with missing data were excluded. Fifty-one (35.4%) patients were given hydroxychloroquine monoterapy (HQ), 93 (64.6%) were given hydroxychloroquine plus azithromycin (HA), and 70 (48.6%) were women. Pre-treatment mean QTc measurements were calculated as 410.61 ± 29.44 milliseconds (ms) for HQ group and 412.02 ± 25.37 ms for HA group, while the mean values of post-treatment QTc measurements were calculat