Table 3.

Baseline and follow-up echocardiography in children with MIS-C

Echo parameter	Baseline	Echo at 2-week follow-up	Echo at 4 to 6-week follow-up
Number of children with low ejection fraction (EF ≤ 55%), n	13/29	1/16	4/12
Ejection fraction, mean (SD)	55.75 (9.24)	59.18 (7.97)	57.75(4.45)
Coronary artery abnormalities, n	RCA*: 2/19 LMCA:0/20 LAD#:1/11	RCA: 0/14 LMCA$:1/12 LAD$:1/10LCx$:1/12	RCA: 0/12 LMCA:0/12 LAD:0/4
Any other	LCx wall thickening (n = 1) Peri-vascular brightness (n = 1)	Peri-vascular brightness (n = 1)	–
Valvular regurgitation	Mild MR and TR:3/28 Mild MR: 1/28 Mild TR:1	Mild MR and TR (n = 1)	Mild TR (n = 2)
Pericardial effusion, n	Mild (n = 1)	0	0
Any other abnormality	–	–	Mild PAH (n = 1)

Z-score

One child had RCA z score of *2.15

One child had z scores of RCA and LAD 3.17 and ^# 2.53 respectively

^$Same child, LAD: 5.2, LMCA and LCx dilated

Dilation or Aneurysm based on Z scores

Dilation (z score 2–2.5)

Small (z score 2.5–5)

Medium (z score 5–10)

Giant (z score > 10)

LAD Left Anterior Descending artery, LMCA Left Main Coronary artery, LCx Left Circumflex artery, TR Tricuspid Regurgitation, MR Mitral Regurgitation, PAH Pulmonary Arterial Hypertension