Perhaps, a research should be made on how chloroquine acts on sars-cov2 to validate its' use..
As for the ventricular arryhtmias, long QT is a known side effect of the drug so a daily routine ECG is being done to evaluate it to be stopped.
I guess the issue here is... can it be a treatment, considering its' serious side-effects? Some patients are sensitive to it so it can be discontinued. Some patients have had no side-effects to it too.
Of course, not all of them have had side effects, but the numbers that emerge from the research show that the risk-benefit ratio seems to be really unfavorable.
I haven't read much about it, esp during SARS. Am intrigued though on its' mechanism of action. Will have to further my research on it.
Cheers!