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We read with interest the paper of Graef et al recently published in your journal about the situation resulting from the massive use of antimalarials for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2/COVID-19), despite the fact that the evidence is controversial and there are concerns about its possible cardiotoxicity, leaving rheumatic patients who use them in a position of vulnerability due to medication shortages.1 In the past few weeks, several papers have been published about the efficacy and safety of the antimalarials chloroquine (CLQ) and hydroxychloroquine (HCLQ) for the treatment of the different phases of infection by SARS-CoV-2/COVID-19, and the data are controversial. However, it is striking that some studies report high rates of cardiovascular events (CVEs) associated mainly with cardiac arrhythmias.2 .
These findings of adverse CVEs reported in the aforementioned studies have unfortunately led to the emergency in this group of patients around fear of chronic use of antimalarials, and many users are abandoning these medications, which implies great clinical risk due to relapses that …
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