Table 4.

Left ventricular ejection fraction and outcomes of patients in groups.

		XBJ group	Control group	p
		N = 21	N = 20
Left ventricular ejection fraction (%)
	Before ECMO	25.86 $\pm$ 5.90	26.10 $\pm$ 6.46	0.901
	At 24 hours	28.71 $\pm$ 5.18	27.25 $\pm$ 5.03	0.364
	At 48 hours	31.57 $\pm$ 3.43	28.35 $\pm$ 4.42	0.013
	At 72 hours	33.62 $\pm$ 3.57	30.70 $\pm$ 3.88	0.016
	28 days after ECMO	42.29 $\pm$ 5.38	40.15 $\pm$ 4.45	0.175
Duration of ECMO (days)		5.57 $\pm$ 2.11	7.25 $\pm$ 2.73	0.033
Length of stay (days)		12.62 $\pm$ 4.78	16.20 $\pm$ 8.28	0.096
Bleeding (n)		0	0
Thrombosis (n)		2	4	0.663
SOFA score at day 28		0 (0, 1)	1 (0, 2)	0.205

ECMO, extracorporeal membrane oxygenation; SOFA score, Sequential Organ Failure Assessment score; XBJ, Xuebijing.