Table 1.

Various electrophysiologic changes in children suffering from pediatric inflammatory multisystem syndrome temporally associated with severe acute respiratory syndrome coronavirus 2

Study	ECG changes (number of patients)	Recovery to normal (yes/no)	Pacemaker requirement (yes/no)
Valverde et al.[7]	Abnormal ST or T wave segment (63)	Yes	No
	Prolonged PR interval (18)	Yes	No
	Bundle branch block (11)	Yes	No
	Prolonged QT interval (9)	Yes	No
	AVB (6)	Yes	No
	Tachyarrhythmias (5)	Yes	No
	Abnormal Q waves (3)	Yes	No
Clark et al.[8]	Complete atrioventricular block (1)	Yes	No
	Transient second-degree AVB (1)	Yes	No
	Sinus pause (1)	Yes	No
	Ventricular tachycardia (2)	Yes	No
	Idioventricular rhythm (1)	Yes	No
Dionne et al.[9]	First-degree AVB (1)	Yes	No
	Mobitz Type I (2)	Yes	No
	Mobitz Type II in (1)	Yes	No
	Third-degree AVB (1)	Yes	No
	QTc prolongation (7)	Yes	No
	Nonspecific ST-segment changes (14)	Yes	No
	Atrial ectopy (2)	Yes	No
	Sustained ectopic atrial tachycardia (1)	Yes	No
Choi et al.[10]	First-degree AVB (6)	Yes	No
	Prolonged QTc interval (4)	Yes	No
	Ectopic atrial rhythm (1)	Yes	No
	ST elevation or depression (3)	Yes	No
	T wave inversions (5)	Yes	No
	Nonspecific ST and/or T wave abnormalities (14)	Yes	No
	Nonspecific intraventricular conduction delay or right ventricular conduction delay (5)	Yes	No
	Right axis deviation (5)	Yes	No
	Intermittent premature ventricular complexes (1)	Yes	No
Domico et al.[11]	Second-degree Type II heart block (1)	Yes	Yes (temporary pacing was removed on D-6)

AVB: Atrioventricular block, ECG: Electrocardiogram