1. Chen CY, Wang FL, Lin CC. Chronic hydroxychloroquine use associated with QT
prolongation and refractory ventricular arrhythmia. Clin Toxicol (Phila). 2006; 44: 173–175 …

Hydroxychloroquine and azithromycin have been touted for potential prophylaxis or
treatment for patients with coronavirus disease 2019 (COVID-19). Both drugs are listed as …

Background In the battle against the SARS-CoV‑2 pandemic, chloroquine has emerged as a
new potential therapeutic option for the treatment of infected patients. A safety consideration …

Chloroquine and hydroxychloroquine are now being widely used for treatment of COVID-19.
Both medications prolong the QT interval and accordingly may put patients at increased risk …

Objective To systematically review the literature and to estimate the risk of chloroquine (CQ)
and hydroxychloroquine (HCQ) cardiac toxicity in patients with coronavirus disease 2019 …

Purpose Hydroxychloroquine, chloroquine, azithromycin, and lopinavir/ritonavir are drugs
that were used for the treatment of coronavirus disease 2019 (COVID‐19) during the early …

© 2020 American Medical Association. All rights reserved. favoring prolonged QT. The QTc
interval was continuously monitored; an electrocardiogram (ECG) was recorded daily. All …

To the Editor—The SARS-CoV-2 pandemic has caused more than 1.6 million positive cases
and more than 95,000 confirmed deaths as of 10 April 2020 (ref. 1). Although there are no …

Importance Administration of hydroxychloroquine with or without azithromycin for the
treatment of coronavirus disease 2019 (COVID-19)–associated pneumonia carries …

Background: The novel SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) is
responsible for the global coronavirus disease 2019 pandemic. Small studies have shown a …