Open AccessInaccuracy of tidal volume delivered by home mechanical ventilators
Author(s) -
Lofaso F,
Fodil R.,
Lorino H.,
Leroux K.,
Quintel A,
Leroy A,
Harf A
Publication year - 2000
Publication title -
european respiratory journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.021
H-Index - 241
eISSN - 1399-3003
pISSN - 0903-1936
DOI - 10.1034/j.1399-3003.2000.15b20.x
Subject(s) - tidal volume , volume (thermodynamics) , ventilation (architecture) , mechanical ventilator , airway resistance , peak inspiratory pressure , medicine , airway , anesthesia , mechanical ventilation , respiratory system , engineering , physics , mechanical engineering , thermodynamics
Ideally, the inspired (tidal) volume ( V T) provided by a volume‐controlled ventilation device should not change when the pressure imposed on the ventilator varies. A bench study evaluation of V T versus pressure was performed on 10 commercially available devices. The difference between the desired V T and the observed V T reached 100 mL for some devices when inspiratory resistance was at its lowest, rising to 150 mL when inspiratory resistance was increased to obtain peak airway pressure of 60 cmH 2 O. The present data indicate that some home ventilators are inaccurate in delivering the preset tidal volume when the pressure imposed on the ventilator is increased to simulate high airway resistance.