Comparison of Actual Performance in the Flow and Fraction of Inspired O₂ among Different High-Flow Nasal Cannula Devices: A Bench Study

Table 1

Details of HFNC devices.

	TNI softFlow 50	AIRVO 2	HUMID-BH	OH-70C	Bellavista 1000
Heated humidifier	Built-in	Built-in	Built-in	Built-in	Fisher & Paykel MR850
Temperature setting	30, 31, 32, 33, 34, 35, 36, 37°C	31, 34, 37°C	31, 34, 37°C	31, 32, 33, 34, 35, 36, 37°C	Noninvasive mode (31°C), invasive mode (37°C)
Humidification chamber	INTERSURGICAL AF2310	Fisher & Paykel MR290	RESPIRACARE autofill humidification chamber HC-B1	Flexicare autofill humidification chamber 038-31-740CH	INTERSURGICAL AF2310
Breathing circuit	TNI softFlow applicator clinic (large)	900PT501 tube	AIRT-B1-III	Micomme H-180	INTERSURGICAL HFOT single-limb circuit
Nasal cannulas	TNI softFlow applicator clinic (large)	F&P optiflow OPT844 (medium)	RESPIRACARE NAC-1 M	Flexicare Veoflo High-Flow Nasal Cannula (small)	Nasal cannula HFN-0002 (medium)
Flow setting (range, minimum increment)	10–50 L/min, 0.5 L/min	10–25 L/min, 1 L/min; 25–60 L/min, 5 L/min	10–40 L/min, 1 L/min 40–80 L/min, 5 L/min	10–25 L/min, 1 L/min 25–70 L/min, 5 L/min	2–80 L/min, 1 L/min
FiO2 setting	Oxygen flowmeter (21–100%, 1%)	Oxygen flowmeter (21–100%, 1%)	Oxygen flowmeter (21–100%, 1%)	Software setting (21–100%, 1%)	Software setting (21–100%, 1%)