Researchers caution use of chloroquine therapy for patients at higher risk of heart r

[News]

A patient who met many of the published safety guidelines for chloroquine therapy against COVID-19 was observed to have a very abnormal ECG pattern after treatment began, leading to multiple episodes of torsade de pointes (TdP), a life-threatening arrhythmia in which the lower chambers of the heart beat out of sync with the upper chambers.

More... (https://www.news-medical.net/news/20200618/Researchers-caution-use-of-chloroquine-therapy-for-patients-at-higher-risk-of-heart-rhythm-abnormalities.aspx)