Effect of Hydroxychloroquine and Azithromycin on QT Interval Prolongation and Other Cardiac Arrhythmias in COVID-19 Confirmed Patients

Table 2

Baseline and posttreatment QTc interval.

Characteristic	Total () (%)	Hydroxychloroquine () (%)	Hydroxychloroquine and azithromycin () (%)	value
Baseline QTc, (ms)				0.198
Posttreatment QTc, (ms)				0.488
ΔQTc, (ms)				0.463
Prolonged QTc	38 (22.1)	3 (10.3)	35 (24.5)	0.094

Abbreviations: SD: standard deviation; QTc: corrected QT interval; ΔQTc: change in corrected QT interval; ms: millisecond.