Table 1. The data and outcomes of ECMO support for COVID-19 patients up to date.

	Patients	Patients requiring		Patients requiring	Wean	On ECMO	Successful weaning	Mortality
	Hospitalized	ICU		ECMO			from ECMO
	n	n	%	n	n	n	n	n	%
Wang et al., 2020[16]	138	36	26	4	NA	NA	NA	NA
Huang et al., 2020[27]	41	13	32	2	NA	NA	NA	NA
Chen et al., 2020[28]	99	23	23	3	NA	NA	NA	1	33
Yang et al., 2020[29]	710	52	7	6	None	1	None	5	83
Zhou et al., 2020[12]	191	50	26	3	None	None	None	3	100
ECMO: Extracorporeal membrane oxygenation; ICU: Intensive care unit; NA: Not applicable