Humidification Performance of Heat and Moisture Exchangers for Pediatric Use

Table 1

Features of tested heat and humidifier exchangers.

No.	Device	Manufacturer	Recommended tidal volume (mL)	Measured resistance, cmH2O/L/s	Resistance from manufacturer’s data, cmH2O/L/s	Type of HME	Dead space (mL)
(1)	Hygroboy	Tyco Healthcare	75–300	5.7	4.2	hygroscopic	26
(2)	HCH 5701	Vital signs	100–1,200	0.6	1.9	hygroscopic	30
(3)	Pharrma Mini	Pharma Systems	50–900	4.3	4.2	hydrophobic	28
(4)	HMEF Mini	GE Healthcare	60–500	3.5	3.0	hygroscopic	21
(5)	Servo Humidifier 161	Maquet	70–600	1.6	1.2	hygroscopic	21
(6)	Clear-Therm Mini	Intersurgical	75–200	3.3	3.4	mix	28
(7)	Humid-Vent 1	Hudson RCI	50–600	1.2	0.9	hygroscopic	10
(8)	Hygrovent Child	Medisize	50–250	13.6	6.0	hygroscopic	12
(9)	Thermovent 600	Smiths Medical	<600	1.2	2.9	hydrophobic	12
(10)	Vent Aid SK300CP	Fuji Medical	50–300	8.1	6.0	hygroscopic	12