Prone positioning combined with high-flow nasal or conventional oxygen therapy in severe Covid-19 patients

Table 1 Clinical characteristics and outcomes of patients

Case no.	Gender	Age (years)	SAPS II score at admission	Ventilatory support	BMI (kg.m⁻²)	Duration of prone positioning (hours)	P_aO₂/F_iO₂ before prone position	P_aO₂/F_iO₂ after prone position	Intubation
1	Male	60	27	HFNO 50 L/min	27	7	144	254	Yes
2	Male	54	32	COT 6 L/min	27	1	215	147	No
				HFNO 50 L/min		1	129	156
3	Male	55	26	HFNO 50 L/min	26	16	126	194	No
				HFNO 50 L/min		16	183	162
4	Male	66	37	COT 5 L/min	31	4	150	242	Yes
5	Male	61	28	COT 3 L/min	21	1	274	225	Yes
				COT 3 L/min		2	193	124
6	Male	64	36	COT 5 L/min	27	2	212	168	No

F_iO₂ with COT was calculated using the following formula: F_iO₂ = 21 + (4 × oxygen flow rate in L min⁻¹)
BMI body mass index, HFNO high-flow nasal oxygen, COT conventional oxygen therapy

ISSN: 1364-8535