Table 2.

Echocardiography at 6 weeks post discharge

	All	First wave (n = 73)	Second wave (n = 73)	p-value
LVESV, mL	41.0 (18.8)	42.7 (15.8)	39.3 (21.5)	0.29
LVEDV, mL	91.7 (33.1)	97.0 (30.3)	86.3 (35.0)	0.05
LVEF, %	56.2 (6.7)	56.6 (5.1)	55.8 (8.0)	0.47
> 52(M), > 54(F)	72.6	76.7	68.5
40–52(M)/54(F)	24.7	23.3	26.0
30–40	0.7	0	1.4
< 30	0.7	0	1.4
LV GLS, %	− 17.0 (2.5)	− 16.5 (2.3)	− 17.5 (2.6)	0.03
				0.16
≤ − 16	70.5	65.3	76.1
> − 16	29.5	34.7	23.9
RVEDD, mm	34.4 (4.8)	34.0 (4.5)	34.8 (5.1)	0.32
TAPSE, mm	21.0 (3.3)	21.0 (2.9)	21.0 (3.6)	0.90
				0.63
≤ 17	13.7	15.1	12.3
> 17	86.3	84.9	87.7
Sʹ, cm/sec	13.5 (3.0)	13.0 (3.0)	13.9 (3.0)	0.08
				0.97
≥ 10	15.8	15.7	15.9
< 10	84.1	84.2	84.0
RV FAC, %	42.9 (8.6)	42.2 (8.0)	43.6 (9.3)	0.35
				0.39
≤ 35	18.1	20.8	15.3
> 35	81.9	79.2	84.7
RV strain, %	− 23.6 (4.9)	− 24.1 (4.3)	− 23.1 (5.5)	0.22
				0.33
≤ − 23	56.9	60.9	52.5
> − 23	43.1	39.1	47.5
Diastolic dysfunction grade, %				0.99
0	59.6	58.9	60.3
I	37.7	38.4	37.0
II	2.7	2.7	2.7
III	0	0	0
E/A	1.0 (0.5)	1.0 (0.5)	0.9 (0.4)	0.16
Eʹ average, cm/s	8.9 (3.1)	9.0 (3.1)	8.9 (3.1)	0.81
E/Eʹ	7.6 (3.2)	7.4 (3.4)	7.8 (3.0)	0.42
LAVI, ml/m2	28.7 (10.3)	28.4 (9.6)	29.0 (11.1)	0.69
TR gradient				0.38
≤ 34 mmHg	94.7	96.4	92.3
> 34 mmHg	5.3	3.6	7.7

Data are presented as mean (SD), or as percentage

LAVI left atrial volume index, LVEDV left ventricular end-diastolic volume, LVESV left ventricular end-systolic volume, LVEF left ventricular ejection fraction, LV GLS left ventricular global longitudinal strain, RVEDD right ventricular end-diastolic diameter, RV FAC right ventricular fraction area change, RV strain right ventricular strain, TAPSE tricuspid annular plane systolic excursion, TR gradient tricuspid regurgitation gradient