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

Table 3

Posttreatment electrocardiographic findings of COVID-19 patients.

Findings	Total () (%)	Hydroxychloroquine () (%)	Hydroxychloroquine and azithromycin () (%)	value
Heart rate
Normal	163 (94.7)	28 (96.5)	135 (94.4)	0.636
Tachycardia	7 (4.1)	0 (0)	7 (4.9)	0.224
Bradycardia	2 (1.2)	1 (3.5)	1 (0.7)	0.208
Supraventricular
Atrial fibrillation	3 (1.7)	1 (3.4)	2 (1.4)	0.208
PAC	1 (0.6)	0 (0)	1 (0.7)	0.652
Ventricular
Ventricular tachycardia	2 (1.2)	0 (0)	2 (1.4)	0.522
TdP	2 (1.2)	1 (3.4)	1 (0.7)	0.208
ST segment elevation	4 (2.3)	0 (0)	4 (28)	0.362
Bundle branch block
LBBB	1 (0.6)	0 (0)	1 (0.7)	0.652
RBBB	3 (1.7)	1 (3.4)	2 (1.4)	0.442

Abbreviations: PAC: premature atrial contraction; TdP: torsade de pointes; RBBB: right bundle branch block; LBBB: left bundle branch block.